Teaching aims and requirements of the unit
To learn about some vocabulary and knowledge related to science and experiments
To know about some metals and get to know their main uses in our lives
To make the students know how to do a simple experiment and write the report about it in English
To deal with all the activities 1-6 about passage A and passage B on page 44-45
To develop students’ expression ability as well as reading ability by practicing these two passages
To raise students’ interests in science and form the rigorous scientific attitude.
Teaching point
How iron reacts with air and with water?
Teaching procedures
Period 1: Introduction and reading
Step1: Warming up
Warming up by discussing
Good morning, class. Today we are going to to read about A SIMPLE SCIENTIFIC EXPERIMENT. But first I’d like to show you something. See what’s in my hand? A rusted knife and rusted nail. How does this happen? Please discuss this with your partner.
Warming up by learning vocabulary
Turn to page115, and go over the vocabulary list for Unit 5
Warming up by daily talk
T: Now you learn several subjects at school, such as, maths, Chinese, English， physics, chemistry and so on. Which do you like best? Why ? Any volunteers?
S1: I like English. My wish is to go abroad some day so I like English and I want to learn it well.
S2: I like biology. I want to become a scientist to explore the secrets of life.
S3: I like physics. I’m interested in electricity. I want to know more about it and make more use of it to make our life better and better.
S4:… ... ... ...
T: When I was at your age, I often did experiments at school.(Teacher writes the word “experiment” on the blackboard.) Do you know the meaning of the word “experiment”? It means “trial made in order to prove the truth of an idea”. For example, I hope to find the answer to this problem by experiment. Do you often do experiment?
S5: Yes. We often do experiment in physics, chemistry and biology in the labs or in the classroom.
T: So today we are going to learn an experiment.
Step2: Pre-reading
Work in pairs, and discuss why an iron knife and nail rust.( the students may say it’s because of water and oxygen.) How can you prove that? (to conduct an experiment).
Introduce some key new words
dissolve electricity equipment oxygen react rust solid steam test tube..
Step 3: Reading
Leading-in
We know the experiment you did just now tell us a truth that metal may react with different substances in a certain situation. Now, we’re going to learn something about an experiment. Skim the text to get a general understanding
Fast reading: Read Passage A and choose the best title for it.
A. The Different Uses of Metals
B. The Reaction of Metals
C. The Reaction of Metals with Oxygen
( Key: B )
Careful reading: Read passage A again and answer these questions.
1) Which of the metals in the table reacts the most with oxygen and water?
( Key: Potassium )
2) What happens when you heat calcium in oxygen?
( Key: It will burn to form an oxide )
3) Which metals react with steam?
( Key: Magnesium, Alumminium and Zinc )
4) Does iron have a slow or fast reaction with steam?
( Key: It reacts slowly.)
5) Does copper react with water?
( Key: No )
Read passage B and fill in the table.(on page 44)
Compare the 5 sentences and find the different usage of the word leave
1) Leave the tube for one week. (使… 处于某种状态)
2) I’m leaving Changchun for Beijing tomorrow. (离开)
3) There are five minutes left. (剩下)
4) Leave it to me. (交给)
5) He said that he had left his book in the classroom. (落在某地方)
Step 4: Post-reading
In our daily life maybe you always see something rusted, it is not good. How can you solve this problem?
Step 5: Discussion
Do you think it is easy or difficult for you to carry out a scientific experiment well? And can you describe how to do it successfully in simple words?
If you want to learn science subjects well, what qualities do you think you should have? (Possible answer: We should be careful / serious / diligent / patient / thoughtful /etc.)
Step 6: Reading practice
Read the following passage within 5 minutes and make a proper choice to each problem.
During the 19th century scientists found that when certain parts of the brain of a man were injured, he would lose the power to do something. And so people thought that each part of the brain did a different job. But modern research has found out that this is not so, for it is not easy to say exactly what each part of the brain does.
In the past fifty years, there has been a great increase in the amount of research done on the brain. Chemists and biologists have discovered that the way the brain works is not so simple as people in general may think. Chemists tell us that 1,000,000 chemical changes take place in the brain every second. Some recent researches also suggest that we can remember everything that happens to us. We may not be able to recall the things we’ve heard and seen, but it is all kept there in the storehouse of the mind.
Earlier scientists thought that the power of one’s brain got weaker and weaker as one grew older. But it is now thought that it is not true. As long as the brain is given plenty of exercise, it keeps its power.*It has been established that an old person who has always been active in the mind has a quicker mind than a young man, who has done some physical work without using much of his brain.* The more work we give our brains, the more work they are able to do.
1. At present, the scientists have found out that___.
A. a certain part of a man’s brain does a certain job
B. if a man’s brain is injured, he can’t do anything
C. it’s difficult to conclude what each part of a man’s brain does
D. the brain is more powerful than any other parts of a man’s body
2. Which of the following is TRUE according to the text?
A. Less researches have been done on the brain in the past fifty years.
B. Most people think that the way the brain works is simple.
C. 1,000,000 chemical changes take place in the brain every minute.
D. We can’t recall all that we’ve heard and seen because what we can remember is limited.
3. The main idea of the last paragraph is that____.
A. One’s brain gets weaker and weaker as he grows older
B. One’s brain grows stronger as he grows older
C. One’s mind becomes quicker as he keeps active in thinking
D. We’d better do less physical work, for it is not good for our mental health
4. The purpose of writing this text is to ____.
A. tell us some new findings about man
B. criticize the scientists of the 19th century
C. encourage further study in the brain
D. correct some misunderstanding about the brain
( Key: CBCD )
Step 5: Homework
1. Conduct an experiment about something you see in your daily life.
2. Try to repeat the text freely yourself.
3. Learn the new words again, using the dictionary If necessary.
Period 2: Grammar and usage
Step 1: General introduction
1. Structures of comparison structures ( 形容词或副词各级别句式)
1). as + adj./ adv. + as.
The layout of Class One’s wall newspaper is as beautiful as that of Class Three’s.
as + adj. + a + n. + as
This is as good a dormitory building as the other.
as + many / much + n. + as
I have as much experience as you in doing the work.
2). not as/so + adj./ adv. +as
The bedroom is not as big as the sitting room,
3). the -er form + than
Most people think detective stories are more interesting than science fiction.
4). the + -est form
This is the largest supermarket in our neighborhood.
2. Some other structures
1) -er form + and + -er form
Our city is becoming more and more prosperous with the development of industry.
2) the + -er form, the + -er form,
The higher the plane flies, the smaller it will look.
3) This bridge is three times longer than that one.
This bridge is four times the length of that one.
This bridge is four times as long as that one.
Step 2: Test to the grammar
1 After the new technique was introduced, the factory produced________ tractors in 1988 as the year before.
A. as twice many B. as many twice C. twice as many D. twice many as
2 How beautifully she sings! I’ve never heard_________.
A. the better voice B. a good voice C. the best voice D. a better voice
3 If the manager had to choose between the two, he would say John was _______choice.
A. good B. the best C. better D. the better
4 "Are you satisfied with her answer? " "Not at all. It couldn’t have been______".
A. worse B. so bad C. better D. the worst
5 Paper produced every year is______ the world’s production of vehicles.
A. the three times weight B. three times the weight of
C. as three times heavy as D. three times as heavier as
6 We advertised for pupils last autumn, and got_______60.
A. more than B. more of C. as much as D. so many as
7 Professor White has written some stories, but he is _____known for his plays.
A. the best B. more C. better D. the most
8 It is generally believed that teaching is ____it is a science.
A. an art much as B. much an art as
C. as an art much as D. as much an art as
9 In recent years travel companies have succeeded in selling us the idea that the further we go, _____.
A. our holiday the will be better B. our holiday the will be the better
C. the better our holiday will be D. the better will our holiday be
10. I’m _____ at sums than Jean, but better at history.
A. more B. less C. worse D. cleverer
11. We couldn’t have picked ______ day for the picnic because it rained nonstop.
A. a worse B. a worst C. the worse D. the worst
12. This bird is really lovely, and I’ve never seen _____ one.
A. a finer B. a finest C. the finer one D. the finest
13. His pronunciation is bad, but mine is _____.
A. no better B. no more C. even better D. even more
14. Holiday flights are getting ______ expensive, and we can go by plane.
A. more and more B. less and less C. by far D. so much
15. Generally speaking, the younger you are, _____ to learn.
A. it is easier B. the easier it is C. it is easy D it is easier
16. We were very tired, for we walked _______ 20 miles that day.
A. less than B. no less than C. no more than D. only
17. You are ______ careful than your brother. you two can’t do the work that needs care and skill.
A. not more B. no more C. not less D. no less
18. “Oh, how fat he is!” “ But I think he is ______ than fat”
A. short B. shorter C. more short D. shortest
19. In my apartment there are two rooms， ____ is used as a living room.
A. larger one B. the larger of which
C. the largest one D. the largest of which
20. “Would you like a cup of coffee or a glass of beer?” “_______ will do, but milk is ______ popular with me.”
A. Neither, not B. Both, more C. Either, the most D. All, the most
(Keys: 1-5 CDDAB 6-10 ACDCC 11-15 AAABB 16-20 BBCBC)
Period 3: Self-assessment
Step 1: Listening and speaking in everyday English given in this unit
Listen to the dialogues and answer the True or False questions. A dialogue. Susan (a girl) meets Peter (a boy) in the schoolyard and they begin a chat about how to study Module 5 better. Mr. Smith is their teacher of English. (Su = Susan; Pt = Peter; Sm = Mr. Smith) Pt: Hi, Susan. Su: Hello, Peter. Pt: You look worried, anything the matter? Su: Oh…My English study. Pt: But you do quite well in English? Su: Thank you. Now some students are saying that this module is the most difficult that we have ever had． Don't you think so? Pt: Not that hard, I think. Su: But it's really too much for me, especially those dull words. They have been driven me mad． Pt: Well, I have made some English labels with them, and Mr. Smith has managed to persuade the school committee to allow us to put the labels along with those in Chinese in the lab and on the equipment, as long as it's safe to have a label on it. Su: Do you think it will help? Pt: Sure, in this way, any time we go to do experiments, we can see the labels in English and it will absolutely help us remember them. Su: Maybe it will work. But how about the experiment report . It appears easy, but it's really hard to be perfect work. Pt: I feel the same way. But don't worry, I just said goodbye to Mr. Smith in the lab．Let turn to him for some advice. Su: OK. (Narrator): Then they go to the lab and Mr. Smith's still there. SM: Hello, Peter and Susan, anything I can do for you. Pt: Susan is worrying about her study of this module. SM: You see, I have finished these labels. They will help you remember the new words. Su: But how about the experiment report? It's really hard to do it well. SM: But it's not so hard? Oh. I see. You've got nothing hard in your English, but in your concept. Pt and Su: Concept, what do you mean by saying so? SM: Let me explain it to you. You think it hard to write an experiment report in English. But the difficulty lies not in your English, but in your concept, as you have never thought you can do an experiment report in English. You are frightened． Su: Maybe so, I have not had the heart to start it, just because I don't think I can do it. Pt: Me too. SM: But you have done well in both chemistry and physics. You should be sure that you can do an experiment well not because it is in Chinese, but because you are able to do it well. So remember, you'll never know if you can do something unless you have the heart to have a try. You've got it? Su and Pt: Yeah, that's the very point. We'll go back and do it right now. Thank you very much, Mr. Smith. SM: I'm sure you can do it very well. Good luck. Su and Pt: Bye. SM: Bye. True or false questions: 1．Susan doesn't do well in her English. 2．Concept is important. 3．Peter is more serious with his study than Susan. 4．Mr. Smith went to the lab to do an experiment. 5．It's really different between writing an experiment report in English and one in Chinese. ( Key：F T F F F ) Open discussion: What can you learn from the case of Susan? Possible answer: We can only do something well when we are sure that we can do it well. So, we should learn to believe in ourselves. Step2: Make multiple choices according to the language points we study in this unit.
1. You can look for new coins to add___ your collection.
A. up B. to C. up D. /
2. The anti-Japanese war______ in 1945.
A. concluded B. ended C. finished D. completed
3. He ____ his letter with good wishes to the family.
A. finished writing B. ended C. finished D. concluded
4. His method ______ English is very good.
A. to study B. for studying C. of studying D. in studying
5. Mary ____ some sugar in her cup of coffee.
A. melted B. dissolution C. disposed D. dissolved
6. It’s dangerous to touch _______ wires.
A. electrified B. electric C. electrical D. electricity
7. They have already _____ themselves for the travel.
A. supported B. supplied C. provided D. equipped
8.---- Good morning, Grand Hotel.
----Hello, I’d like to book a room for the nights of the 18th and 19th.
----______
What can I do for you? B. Just a minute, please.
C. What’s the matter? D. At your service
9. The visiting guests expressed their satisfaction with the talks, _____ that they had enjoyed their stay here.
A. having added B. to add C. adding D. added
10.--- Will you go and have a picnic in the park with us tomorrow?
---- I’ll try, but _______.
A. this depends B. it all depends on C. that depends D. that depends on
11.I owe my success to my father. Whenever I was not sure of going on, he always encouraged me to ________.
A. get ahead B. go ahead C. take ahead D. be ahead
12.The students ________ a line on the play ground, getting ready for their P.H.
A. Formed B. stood C. rowed D. got
13.His success _______ his hard work.
A. resulted B. resulted in C. resulted from D. caused
14.The water had boiled _______ and the kettle was empty.
A. away B. over C. down D. /
15.he worked hard, _____ he passed the exam.
A. in a result B. as result C. as a result D. for a result
16.---- No, I’m afraid he isn’t in. This is his secretary speaking. Can I help you?
A. Oh, you will B. Oh, that’s a pity C. I should think so
D. Well, I look forward to hearing from you
17. --- Would you please come to help me with my homework tomorrow?
A. My pleasure B. It depends C. You’re welcome D. I’m glad to hear that
18. ______ in a white uniform, he looks more like cook than a doctor.
A. Dressed B. To dress C. Dressing D. Having dressed
19. You are standing too near the camera. Can you move _______?
A. a bit far B. a little farther C. a bit of farther D. a little far
20.---Let’s go swimming, shall we?
---________.
A. It’s my pleasure B. It doesn’t matter
C. Yes , let’s go D. I agree with you
(keys: 1-5 BDACD 6-10 ADBCC 11-15BACAC 16-20 CBABC)
Step 3: A close test
Read the following story and choose a proper word to each blank in the story from the given words in every group and make the story complete both in meaning and structure.
I was 15 when I walked into McCauley’s Bookstore in Ashland. As I was looking at titles(标题) on the shelves, the man behind the counter, 1 , asked if I’d like 2 . I needed to start 3 for college, so I said yes. I 4 after school and during summers for the lowest wages, and the job helped 5 my freshman (or first) year of college. I would work many other jobs: I made coffee in the Students’ Union during college, I was a hotel maid (or waitress) and 6 made maps for the U.S. Forest Service. But selling books was one of the most satisfying.
One day a woman asked me for books on cancer. She seemed fearful (or much afraid). I showed her almost 7 we had at that time in store and found other books we could order. She left the store less 8 . I have always remembered the 9 I felt in having helped her.
Years later, as a 10 in Los Angeles, I heard about an immigrant (移民) child who was born 11 his fingers connected (or joined together), web-like. His family could not afford (or pay for) a corrective(矫正;整形) operation, and the boy lived in 12 , hiding his hand in his pocket.
I 13 my boss to let me do the story. After my story was broadcast, a doctor and a nurse called, offering to perform the 14 for free.
I visited the boy in the recovery(康复) room soon after the operation. The first thing he did was to hold up his 15 hand and say, “Thank you.” I felt a sense of 16 .
In the past, while I was 17 , I always sensed (or felt) I was working for the customer, not the store. Today it’s the 18 . NBC News pays my salary(工资), 19 I feel as if I work for the 20 , helping them make sense of (or find the meaning of) the world.
1. A．the reader B．the college student
C．the shop owner D．the customer
2. A．a book B．a job C．some tea D．any help
3. A．planning B．saving C．preparing D．studying
4. A．read B．studied C．cooked D．worked
5. A．pay for B．fit for C．run for D．enter for
6. A．so B．yet C．even D．still
7. A．anything B．something C．nothing D．everything
8. A．worried B．satisfied C．excited D．puzzled
9. A．pride B．failure C．sadness D．surprise
10. A．doctor B．store owner C．bookseller D．TV reporter
11. A．in B．with C．by D．for
12. A．shame B．honor C．terror(恐怖) D．danger
13. A．advised B．forced C．persuaded D．allowed
14. A．action B．program C．treatment D．operation
15. A．repaired B．connected C．hurt D．improved
16. A．pleasure B．sadness C．interest D．disappointment(失望)
17. A．at the TV station B．in the Students’ Union
C．at the U.S. Forest Service D．at McCauley’s Bookstore
18. A．difference B．same C．usual D．request
19. A．so B．and C．but D．because
20. A．readers B．viewers C．customers D．passengers
(Keys:1-5 CBBDA 6-10CDAAD 11-15 BACDA 16-20 ADBCB)
Step 4: Translate the following into English paying attention to the bold words or phrases
眼睛对光有反应。
他仅仅念了一年书。
他的话是冲着你说的。
妈妈给我煮了一个鸡蛋。
他的身体失去平衡，跌倒了。
他可能得出结论她撒谎了。
他已经养成了读书做笔记的好习惯。
它是由什么物质组成的？
这部机器是用蒸汽推动的。
我从来没看过这么好的电影。
Keys:
The eye reacts to light.
His school education added up to no more than one year.
His words were aimed at you.
Mother boiled me an egg.
He lost his balance and fell down.
He might conclude she had told a lie.
He has formed the habit of taking notes while reading.
What substances does it consist of?
This machine is driven by steam.
I’ve never seen such a better film.
Task: Writing skills building
1. How to write a letter?
Greeting: " Dear (name)"
Introduction: Say why you write the letter
What the reader wants to hear
What you want to tell the reader
Conclusion: Make plans for next time
Signing off: "Sincerely,"
2. How to write a diary
Date and weather: "Mon. Mar. 5th, 2006 Fine"
Introduction: What will you talk about in your diary?
How will you express your feeling?
A version of a letter
Problem: You want to write a letter to a new American pen pal to introduce yourself.
Dear John,
My name is Li Si, and I am a Beijing high school student. I am very happy to be your pen pal.
My father is an engineer and my mother is a doctor. They are very busy. I have no brothers or sisters, but I am not lonely because I have many school friends. As a Chinese student, I must study hard so I can make my parents proud of me. I like to play the piano, but I am not very good. I need to practise more, but when I have time I would rather go out with my friends or watch television. I also like to listen to music, especially American music. I like to watch NBA basketball, but I am too short to play. Also, Chinese boys do not want us girls to play. They are very mean.
I am very happy to have a new American friend because I like American music and sports. I also want to go to America to study some day. What are the American universities like? Do you think that they give students a good education?
If you have time, please write back and tell me about your life. I am very curious.
Sincerely,
Li Si
课件14张PPT。Thomas Edison What subjects are you interested in?
Are you always interested in it/them?
How did you become interested in
it/them?
Why are you interested in it/them?
What do you think of this subject?Lead in1. Why has Mark become more interested in science?
2. Do you enjoy studying science? Explain why or why not.Read the passage and answer the questions:Because he has moved to a new school with good facilities and teachers.Explanation 1. The science facilities are very good, with laboratories that have all the latest equipment.
这些科研设备非常好，实验室配有最新的设备。
with在此句中意为“带有……”, 其引导的短语对句子作附加说明。
that have all the latest equipment 为定语从句, 修饰laboratories.2. The fact is, Canada has many first-class scientists.
事实是加拿大有许多一流的科学家。
first-class为形容词, 意为“第一流; 最好的; 最优秀的”。如：
They can afford to eat at first-class restaurants.
She got first-class results in her exams.3. The Nobel Prize is the highest prize there is, so we should be very proud of that.
诺贝尔奖是目前科学方面的最高奖, 因此我们感到骄傲。
there is为定语从句, 在句中修饰prize; be proud of 意为“为……感到骄傲”, 后跟名词、代词或动词的-ing形式。如：She is very proud of her son.
她以她的儿子为荣。
He is proud of having studied in Paris.
他以曾在巴黎读过书为荣。
此外，be proud后还能跟that从句和动词不定式。如：
He is proud that he is a teacher.
他以当老师为荣。
I am proud to say that you are my student.
我以有你这学生为荣。4. …, as both are supposed to have good physics Departments.
因为两个(大学)都有不错的物理系。
be supposed to do 意为“被期望或被要求(按惯例、规则) 做某事”。如：
You are supposed to pay the bill by Friday.
你最晚在星期五结清这笔帐。口语中意为“获准做某事”。如：
You are not supposed to play football in the classroom.
在教室里是不准踢足球的。Write a report on a simple scientific experiment using these headings:
Aim, Equipment, Method, Result, Conclusion Homework课件19张PPT。1. Structures of comparison structures ( 形容词或副词各级别句式)Grammar
Degrees of comparison1)as + adj./ adv. + as.
The layout of Class One’s wall newspaper is as beautiful as that of Class Three’s.
as + adj. + a + n. + as
This is as good a dormitory building as the other.
as + many / much + n. + as
I have as much experience as you in doing the work.2) not as/so + adj./ adv. +as
The bedroom is not as big as the sitting room.
3) the -er form + than
Most people think detective stories are more interesting than science fiction.
4) the + -est form
This is the largest supermarket in our neighborhood.2. Some other structures
1) -er form + and + -er form
Our city is becoming more and more prosperous with the development of industry.
2) the + -er form, the + -er form
The higher the plane flies, the smaller it will look.3) This bridge is three times longer than that one.
This bridge is four times the length of that one.
This bridge is four times as long as that one.1.The earth is forty-nine times larger than the moon.
2.The earth is forty-nine times as large as the moon.
3.The earth is forty-nine times the size of the moon.Some examples4.It’s getting colder and colder.
5.The closer you are, the more you will see.
(repeat the same adjective) (things change /are changing together)Look at the following sentences and find out the adverbs used to give more information about the comparative expression
1.Come a bit closer.
2. We need rather more than that .
3. It weighs a little more than before.4. It’ll be a lot heavier than magnesium.
5. Is it any heavier?
6.We need a piece which is much bigger than that.高考链接1. Your story is perfect; I’ve never heard ____ before. (2006全国II)
A. the better one
B. the best one
C. a better one
D. a good one√2. ---Did you take enough money with you? (2006全国II)
---No, I needed ____ I thought I would.
A. not so much as
B. as much as
C. much more than
D. much less than高考链接√高考链接3. This washing machine is environmentally friendly because it uses ___ water and electricity than ____ models. (2006北京)
A. less; older B. less; elder C. fewer; older D. fewer; elder√高考链接4. ---Did you enjoy yourself at the party? (2006四川)
--- Yes. I’ve never been to ____ one before.
A. a more excited
B. the most excited
C. a more exciting
D. the most exciting√高考链接5. A typhoon swept across this area with heavy rains and winds ____ strong as 113 miles per hour. (2006上海)
A. too B. very
C. so D. as√高考链接6. I wish you’d do ____ talking and some more work. Thus things will become better. (2006江苏)
A. a bit less B. any less
C. much more D. a little more√高考链接7. Of the two sisters, Betty is ____ one, and she is also the one who loves to be quiet. (2006安徽)
A. a younger B. a youngest
C. the younger D. the youngest√高考链接8. I don’t think this film is by far the most boring, I have seen ____. (2006江西)
A. better B. worse
C. the best D. the worst√高考链接9. I used to earn ____ than a pound a week when I first started work. (2006陕西)
A. a little B. a few
C. fewer D. less√高考链接10. ____ the temperature, ____ water turns into steam. (MET1988)
A. The high, the fast
B. Higher, faster
C. The more higher, the faster
D. The higher, the faster√课件19张PPT。 Module 5
A Lesson in a Lab 外研版
高中英语
第一册Warming up by learning vocabularyliquid
expand
contract
substance
mixture
oxygen
electricity
stagen.液体vi.膨胀vi.收缩n.物质n.混合物n.氧气n.电n.阶段，时期conclusion
aim
reaction
electrical
equipment
partial
oxide
rustn.结论n.目标，目的n.反应adj.与电有关的，用电的n.设备，装备adj.部分的，局部的n.氧化物vi.生锈boil
ordinary
steam
float
form
dissolve
balance
flamevt.煮，煮沸adj.普通的，平常的n.蒸汽，水气vi.漂浮vi.形成vi.溶解，分解，分离n.天平n.火焰facility
lecture
department
astonished
calcium
magnesium
zinc
coppern.（常作复数）设备，工具n.演讲n.（大学的）科、系adj.吃惊的，惊愕的n.钙n.镁n.锌n.铜Put these words into three groups: air glass iron metal oil oxygen salt steam steel water1.Gas :
2.Solid:
3.Liquid:Steam air oxygen steam
Glass iron metal salt steel
Oil waterGive the following things their correct names1.Crucible
2.Beaker
3. Bunsen burner
4.Tube
5.Tongs
6.Nail
7.Glass rod坩埚
烧杯
酒精灯
试管
小钳子
钉子
玻璃棒
Fast reading: Read Passage A and choose the best title for it.
A. The Different Uses of Metals
B. The Reaction of Metals
C. The Reaction of Metals with OxygenCareful reading It is hard to think of a world without metals. Different metals have different uses, for example, steel is used in cars, and iron is used in electrical equipment. A repeat version to the textWhen we use metals, it is important to know how they react with different substances, for example, water and oxygen. The reaction of metals with these substances can be put in order. Here is a table with the metals that react most at the top, and metals that react least at the bottom.Read the following numbers out 2,000,000 (two million)
5,100,000
(five million,one hundred thousand)
12,269,000
(twelve million,two hundred and thirty-nine thousandPractice:
52,470,383 100,000,000
365,528,462 1,000,000,000Read these fractions:1/4 (a quarter) 1/3 (a third)
4/5 (four-fifths) 1/10 (one tenth)
3/4 (three quarters) 1/2 (a half)
2/3 (two-thirds) 5/8 (five-eighths)
9/10 (nine-tenths)Practice: Read the following out:
1. 1/2 of 6,000,000
2. 35,246,000 plus 12,800,000
3. 25% of 200,000,000
(three million)(forty eight million ,sixty thousand)(fifty million) 4.260,408,396 plus 5,284,700
5.10% of 800,000,000
(two hundred and sixty five million ,six hundred and ninety-three thousand,ninety-six)
(eighty million)
Read out the decimals below:
0.5 (point five)
2.5 (two point five)
18.27 (eighteen point two seven)Practice:
2 1/2 =2.5 (two point five)
2 1/4=2.25(two point two five)
3/4=0.75(point seven five)
12 3/10=12.3 (twelve point three)Homework1. Conduct an experiment about something you see in your daily life.
2. Try to repeat the text freely yourself.
3. Learn the new words again, using the dictionary if necessary.课件36张PPT。外研新标准
第一册 必修1
Module 5 A lesson in a labwarming upModule 5A Lesson in a LabAppreciation of a clip about
an interesting physical experimentObjectives本模块引入了很多与科技、实验相关的词汇。使学生了解和学会使用与科技、实验相关的词汇，学习用英语表达相关的话题。
2. 能和同学进行有关科技和实验的讨论。培养对科学的热爱。Do you like doing experiments?In fact, many scientists
do different experiments
to prove their ideas.1Guess Great Scientists:EdisonAlbert
Einstein 2Newton3Benjamin
Franklin 4Galileo5Where do the scientists do the experiment?Labbalance
天平crucible
坩埚tongs
钳子test tube
试管test tube holder
试管夹 Bunsen burner
本生灯 Do you know the following apparatus?cotton wool
脱脂棉VSgasliquidBunsen burnerAlcohol burner(alcohol)How can we carry out an experiment successfully?Put the words in the correct order to describe the stages of a scientific experiment.conclusion aim result methodaimmethod resultconclusionthe stages of a scientific experimentAimMethodResult Apparatus/
EquipmentConclusion+the elements of
a simple scientific experiment (a) Water exists as a solid, a liquid
and a gas.
(b) Water exists as a solid and a liquid
only.
2. (a) When you heat a metal, it expands.
(b) When you heat a metal, it
contracts.Listen and your answers to the quiz.How much do you know about
general science?3. (a) Steel is a mixture of iron and other
substances.
(b) Steel is a mixture of iron and
oxygen.
4. (a) Two-thirds of the earth’s surface
is water.
(b) 50% of the earth’s surface is water.
5. (a) The distance of the sun from the
earth is 25,5000 kilometres.
(b) The distance of the sun from the
earth is 150,500,500 kilometers.6. (a) The earth is 4.6 million years old.
(b) The earth is 4.6 billion years old.
7. (a) The earth is twice as large as the
moon.
(b) The earth is forty-nine times
larger than the moon.Put these words in pairs or groups.air contract earth gas liquid oxygen moon solid sun expand 1) air — gas — oxygen
2) contract — expand
3) earth — sun — moon
4) gas — liquid — solid solid/liquid/gasAnswer the questions.Which of the above are natural?
2. Which are man-made?
electricity iron metal steel air glass Electricity, iron, some metals and
air are natural. Steel, some metals and glass are
man-made. Electricity and some metals (alloys for
example) can be man-made and occur
naturally.3. Which can be both? Look at the following pictures.
Do you know what are they?In many chemical experiments, we often use metals.potassium
钾iron
铁 sodium
钠 aluminium
铝calcium
钙copper
铜magnesium
镁zinc
锌Potassium
Sodium
Calcium
Magnesium
Aluminum
Zinc
Iron
CopperNa
Mg
Ca
Al
Zn
Fe
K
CuMatch我平生从来没有做过一次偶然的发明。
我的一切发明都是经过深思熟虑，
严格试验的结果。
── 爱迪生HomeworkPreview the part of Reading and Vocabulary.Thank you.课件42张PPT。外研新标准
第一册 必修1Module 5Reading and VocabularyBefore the classI want you to be engaged in the material. I want you to be engaged in whatever it is that we are discussing in class. Not necessarily thinking about getting down every word that I say. I’d like you to take active notes rather than passive notes. Write down what can make you feel or learn something. Better attention, better understanding of the material if you are actively engaged.Better attention, better understanding of the material if you are actively engaged.I want you to be engaged in the material. I want you to be engaged in whatever it is that we are discussing in class. Not necessarily thinking about getting down every word that I say. I’d like you to take active notes rather than passive notes. Write down what can make you feel or learn something. Read the explanation and speak out the word it explains.Words reviewnot different or special or unexpected in
any waya part of an activity or a period of
development a reddish brown substance that forms
on the surface of iron and steel as a
result of decay caused by reacting with
air and water stagen. 阶段，时期electricaladj. 与电有关的rustvi. 生锈related to electricity ordinaryadj. 普通的，平常的behaviour or an action that is a direct result of something else a result that your plans or actions are
intended to achieve if a chemical substance reacts, it changes
when it is mixed with another chemical
substance reactreactionn. 反应vi. (化学)反应aimn. 目标，目的conclusionn. 结论the final part of something to heat a container, especially one used
for cooking, until the liquid in it starts
to turn into a gas a chemical combination of oxygen and
one other element oxidepartialadj. 部分的，局部的boilvt. 煮沸，煮n. 氧化物equipmentn. 设备，装备the set of necessary tools, clothing, etc.
for a particular purpose not complete Objectives阅读课文简单介绍了金属的氧化反应并列出了显示部分金属活动性能的表格。通过学习能熟练地介绍本模块中涉及的两个实验。
2. 对课文中出现的科技和实验的词汇进行归类。能根据所学的词汇、短语写一份实验报告。 To get
general ideasSkimmingChoose the best title for Passage A.A. The Different Uses of Metals
B. The Reaction of Metals
C. The Reaction of Metals with
Oxygen Reading Comprehension ISkimmingWhat experiment does Passage B show us in?
A. How does the nail rust?
B. How does iron react with air and
with water?
C. How do we do an experiment
about the reaction of iron? To solve
difficult pointsCareful reading1. When we use metals, it is important to
know how they react with different
substances, …react with 意为“对……起反应”。如：
Iron reacts with water and air to produce rust.
铁与水和空气起化学反应而生锈。
此外，react还可以同其他介词搭配, 表示不同的意思。如： react on sth. 对某事物有影响；使某事物产生变化。
How do acids react on metals?
酸对金属起什么反应？
react against 反对；反抗 如：
Will the people ever react against the dictator?
有朝一日人民会起来反抗这个独裁者吗？2. Add some oil to the water. add sth. to sth. 意为“加；增加”。 如：He added his signature to the petition.
他在请愿书上签上了自己的名字。
Many words have been added to this edition of the dictionary.
本词典的这一版里新增加了很多词。3. This will keep air out of the water. keep sb./sth. out of 意为“不让某人/某物进入某处”。如：Keep that dog out of my study.
别让那条狗进我的书房。
She wore a hat to keep the sun out of her eyes.
她戴着帽子摭阳, 保护眼睛。类似的：keep out (of sth.) 不进入某处；留在外边
keep up with sb. 保持与某人的联系
keep up with sth. 知悉(消息); 跟上(形势)
keep up (with sb./sth.) 跟上某人/某事物
keep off 不接近或不接触某人/某事物4. Half-fill a test tube with water…
fill …with 意为“使……满；填满”
He filled the bottle with water.
他把瓶子装满水。
Her eyes were filled with tears.
她热泪盈眶。
The result filled his heart with despair.
这样的结果使他心中充满失望。Let the word flyLet the word fly 板块是帮助学生学习一些一词多义、熟词生义的词汇。通过此环节，学生可以对一些常见词的用法、意思有一个全面的了解。在翻译过程中体会词汇使用的丰富多彩。use n.
1. He makes good use of his time.
2. He gave me the use of his bike.
试着翻译下面的英文，注意单词use
的用法。用, 使用; 利用[(+of)]他能充分利用时间。 使用权; 使用能力[U][(+of)]他让我使用他的自行车。 use vt.
1. May I use your pen?
2. He promised to use his influence.
3. They used him to shock the others. 用, 使用我用一下你的笔可以吗?发挥; 行使他答应运用他的影响力。利用(他人、时间、机遇等)他们利用他来吓唬别人。 vi. We used to grow peanuts. 我们过去是种花生的。 (仅用于used to do
结构)过去惯常, 以前习惯于现学现用Work in pairs, one of you make up
sentences with use in English, the
other make up sentences in Chinese.
Then you exchange and translate them. To get
detailed informationScanningAnswer the following questions.1. Which of the metals in the table reacts the most with oxygen and water?
2. What happens when you heat calcium in oxygen? Passage AScanningReading Comprehension IIPotassium, calcium and sodium. It burns to form an oxide.3. Which metals react with steam?
4. Does iron have a slow or fast reaction with steam?
5. Does copper react with water?
Magnesium, aluminium and zinc. It has a slow reaction.No, it doesn’t.Fill in the chart. cotton
woolwater water ScanningReading Comprehension IIIPassage Bnailswater Iron does
not rust. Iron does
not rust. Iron rusts. ConclusionIron does not rust in dry air or air-free water; Iron rusts in ordinary water.1. In the first part of the experiment, the ___ is dry, not wet.
2. It shows that iron ___________ when the air is dry.
3. In the second part of the experiment, you must ____ the water to make sure there is no ____ in it.airdoes not rustboilairComplete the sentences.4. You add _________ to the water because this keeps ____ out of it.
5. It shows that ____ does not rust in water that has no ____ in it.some oilairnail air Aim (Why?)
2. Apparatus (What to prepare?)
3. Method (How to it?)
4 result (What can we find?)
5. conclusionHow to describe an experiment?Think about a simple scientific
experiment that you have done
recently and write an experiment report. An Experiment Report
1. __________:
2. __________:
3. __________:
(1)
(2)
(3)
…
4. __________:
5. __________:AimApparatusMethodResultConclusion DiscussionIf you want to do an experiment successfully, what good qualities do you think you should have?
(You should be …)Individual activityQuiz I: Retell the passage. Different metals have different uses. Iron is widely used in _________ equipment. It is important to know how metal ______ with different substances.
The first part of the experiment show that iron doesn't _____ in dry air. In the second part, you must _____ therustelectricalreactboilwater to make sure that there is no air in it. Add some oil to the water to _____ the air out of it . It shows that iron doesn't rust in _______ water. In the third part, _______ the tube with water. It shows that they rust in ________ water.keepair-freeordinaryhalf-fill1. 你应该让孩子远离火。
You should ______ the child ___ the
fire.
2. 他们就这个问题讨论了整整一下午，
但是他们没有得出任何结论。
They discussed the problem for a
whole afternoon, but they didn’t
_____ __ ____ _________.keepoffQuiz II: Translation.come to any conclusion3. 我给了他一张珍贵的瑞典邮票，
添加到他的收藏品中。
I gave him a rare Swedish stamp to
____ __ his collection.
4. 我们现在的目的是创办一座工厂。
It is now ____ ____ ___ set up a
factory.
5. 不锈钢不会生锈。
Stainless steel _______ ____. add toour aim todoesn’t rustThink about what we’ve just learnt in today’s class.Time for Reflection Study without reflection is a waste of time.Think in English After the classIt’s the time where we stop the class and you look inward. It’s
a time of silence in a class. Review课时重点回顾react … with 对……其反应
put … in order 把……按顺序排列
add sth. to sth. else
把某物加到其他物质中
keep sth. out of sth.
防止某物进入其他物质Homework Read the passage again and review
the new words and expressions.
2. 发挥想象，连词成文(50-100字)。conclusion, keep sth. out of sth., aim, stage, rust, ordinary,
equipment, put … in order. Thank you.课件37张PPT。Module 5GrammarObjective学习形容词和副词的比较级。 The earth is forty-nine times larger
than the moon.
2. It is less cold today than it was
yesterday.
3. The rent of our flat is getting more and
more expensive.
4. The more I see you, the more I miss you.
5. The hotter, the better.
6. The more he studies, the better he
becomes.Degrees of comparison一.形容词和副词比较等级的用法1）原级比较：表示两者程度相同。用句型“as+形容词/副词+as”结构表示，否定形式为：not as/so+形容词/副词as。 如：
Dick is as tall as his brother.
Tom speaks as quickly as his cousin.
I have never seen a person as/so clever as he is.2）比较级：
A. 表示A超过B。此时使用形容词和副词的比较等级。如：Our classroom is brighter than yours.
Dogs run faster than rabbits.
I don’t think math is more important than physics.B. 表示A不如B。 用“less+形容词/副词的原级”表示。如：Rabbits ran less fast than dogs.
Jenny is less clever than her sister.
It rains less often here in autumn than in spring.3）形容词和副词比较级的特殊用法
A. 越来越……， 如：You are growing taller and taller.
你越长越高了。
English is becoming more and more important.
英语越来越重要了。B. 越……， 越……， 如：
The harder you push, the more quickly that cart will move.
你越使劲推，车就越跑的快。
The more careful you are, the better you will do in the exam.
你越小心，就会考得越好。
The more you practice, the more fluently you will speak.
你练得越多，讲得就越流利。C. 表示两者之中比较……的一个，用of 引导，比较级前加上the。 如：
Jack is the taller of the two brothers.
杰克是兄弟两中较高的一个。
This is the bigger of the two rooms.
这个房间是两个中较大的一个。D. no more than表示“只；不超过；不多于”，相当于only。如：
His whole school added up to no more than one year.
他所接受的学校教育不过一年。
She has no more than one yuan in her pocket.
她兜里只有一块钱。E. no more…than 表示“……一样不……”；而not more…than则表示“不像……那样”，相当于“not so …as”。如：
He is feeling no better than yesterday.
他觉得不比昨天好多少。
She is not more generous than her younger sister.
她不如她妹妹那样慷慨大方。
She is not so generous as her younger sister. 相当于：F. no less than表示“多达， ……那样多; 至少, 起码”, 相当于as much/many as, 蕴含这个数是大的；而not less than表示“不少于”, 不强调这个数的大小, 只说明数据本身。如：
I have no less than ten dictionaries.
我起码有10本字典。蕴含“我的词典多”I have not less than ten dictionaries.
我拥有的词典不少于10本。不含“我的词典多”的意思，只说明一个事实。G. no less …than表示“不比……差；与……同样地”， 相当于“as …as”。 如：
She is no less beautiful than her sister. H. 不用比较级的形容词， 如：senior, junior, superior, inferior等。如：
He is three years senior to me.
他比我大三岁。
Your knowledge of electronics is much superior to mine.
你对电子学的知识远远超过我。I. 比较级的修饰语。这些修饰语通常为副词或短语，置于比较级前面， 说明比较级的程度。这些词有：a little, little, a bit, bit, a lot, a great deal, much, far, rather, slightly, by far, even, still, nearly, almost, any, just, (…)times等。如：The moon is much smaller than the earth.
The result of the experiment turned out to be even better than expected.
Speak a bit more slowly, please.
The output of the paper mill is three times higher than it was last year. 比较级形容词或副词 + than 的注意事项：
1）要避免重复使用比较级。
(错) He is more cleverer than his brother.
(对) He is more clever than his brother.
(对) He is cleverer than his brother.
2）要避免将主语含在比较对象中。
(错) China is larger that any country in Asia.
(对) China is larger than any other country in Asia.3）要注意对应句型，遵循前后一致的原则。
The population of Shanghai is larger than that of Beijing.
It is easier to make a plan than to carry it out.4）要注意冠词的使用，后有名词的时候，前面才有可能有冠词。
比较：
Which is larger, Canada or Australia?
Which is the larger country, Canada or Australia?
She is taller than her two sisters.
She is the taller of the two sisters.用英语表达“A是B的N倍长（宽，高，大，重等）”，“A 比 B 长（宽，高，大，重等）N倍” 或“A 的长度（宽度，高度，大小，重量等）是B的N倍”，可用下列几种句型。
1.“A + be + 倍数 + as + 计量形容词原级 + as + B”。
This tree is three times as tall as that one. 这棵树是那棵树的三倍高。
His father is twice as old as he.
他父亲的年纪有他两倍大。 形容词和副词比较级的倍数表达法2.“A + be + 倍数 + 计量形容词比较级 + than + B ”
The Yangtze River is almost twice longer than the Pearl River.
长江差不多比珠江长两倍。
The dictionary is exactly five times more expensive than that one.
这本字典比那本恰好贵5倍。
3.“A + be + 倍数 + the + 计量名词 + of + B ”
The newly broadened square is four times the size of the previous one.
新扩建的广场是未扩建时的四倍大。 4.“The + 计量名词 + of + A + be + 倍数 + that + of + B ”
The size of the newly broadened square is four times that of the previous one.
新扩建的广场为以前的四倍大。
5.其它
I’m twice/double his age.
我的年龄是他的两倍。
The average income of the staff has been increased by 50 percent compared with
last year.
与去年相比，该单位职工的收入增加了50%.Review复习形容词和副词的比较级：
1. 倍数的表达法
2. 比较级的三种用法：
1) 表示“越来越……”
2) 表示“越……，越……”
3) 表示程度的副词(much, a little…)
+形容词和副词的比较级1. That doesn’t sound very frightening, Paul. I’ve seen _______. What did you like most about the film? A. better B. worse C. best D. worst
2. The number of people present at the concert was _______ than expected. There were many tickets left. A. much smaller B. much more C. much larger D. many more Exercises3. He speaks English well indeed, but, of
course, not _____ a native speaker.
A. as fluent as B. more fluent than C. so fluently as D. much fluently than
4. It is reported that the United States uses ___ energy as the whole of Europe. A. as twice B. twice much C. twice much as D. twice as much5. Mary kept weighing herself to see how much _____she was getting.
A. heavier B. heavy C. the heavier D. the heavier
6. The house rent is expensive. I’ve got about half the space I had at home and I’m paying _____here.
A. as three times much
B. as much three times
C. much as three times
D. three times as much 7. As far as I am concerned, education is about learning and the more you learn, _________. A. the more for life are you equipped B. the more equipped for life you are C. the more life you are equipped for D. you are equipped the more life Ten years ago the population of
our village was ____ that of theirs.
(2008 陕西)
A. as twice large as
B. twice as large as
C. twice as much as
D. as twice much as 实战高考2. It is ___ to spend money on preventing
illnesses by promoting healthy living
rather than spending it trying to make
people ___ after they are ill. (2008 江苏)
A. good; good B. well; better
C. better; better D. better; good
3. I like this jacket better than that one,
but it costs almost three times ____.
(2008 浙江)
A. as much B. as many
C. so much D. so many 4. My uncle’s house in the downtown area
is much smaller than ours, but it is
twice _______ expensive. (2009 四川)
A. as B. so
C. too D. very
5. Peter’s jacket looked just the same as
Jack’s, but it cost ____ his. (2009 辽宁)
A. as much twice as B. twice as much as
C. much as twice as D. as twice much as 6. Mr. Black is very happy because the
clothes made in his factory have never
been ________. (2010 全国II)
A. popular B. more popular
C. most popular D. the most popular
7. Mr. Stevenson is great to work for —
I really couldn’t ask for a ____ boss.
(2011 全国II)
A. better B. good
C. best D. still better8. — The film is, I have to say, not a bit
interesting.
— Why? It’s ______ than the films
I have ever seen. (2011 江西)
A. far more interesting
B. much less interesting
C. no more interesting
D. any less interesting1. I have ______ (many) books than
my brother.
2. There is _____ (little) bread in the
box than in the fridge.
3. In the English exam, I got the
______ (many) points, but Beibei
got the _______ (few) points.Fill in the blanks.moreless?mostfewest4. Simon and Andy have _________
(much) time than Daniel, Daniel has
________ (little) time of the three.
5. Yao Ming is the best player in the
game. He scored the ________ (many)
points.
6. Daniel made ______ (many) mistakes
than Kitty in the maths homework, but
he made ______ (few) mistakes than
Simon. Kitty made _________ (few)
mistakes of the three.morethe leastmost?morefewerthe fewest1. 期末考试总是比较难。
2. 阅读比烹饪有趣。
3. 外语跟计算机科学一样实用。
汉译英。The final exam is always more difficult.Reading is more interesting than cooking. Foreign languages are as practical as
computer science. 4. 你学得越多，你越是想学。
5. 多多益善。
The more you learn, the more you
wish to learn.The more, the better.Thank you.课件11张PPT。Module 5ListeningObjective能识别听力中新学的词汇、短语并正确理解其含义。能听懂对话中关于科学实验的讨论和发言并获取信息。Listen to the conversation.(Mr C=Mr Chen, ZK=Zhou Kai, LK= Li Kang)Mr C: OK, boys and girls, we’re going
to do an experiment. Come __ ___
closer. ____ ______ you are,
____ ____ you’ll see! That’s right!
Now, what’s the aim of this
experiment, Zhou Kai?
Z.K: We want to ____ ___ if there’s a
change in weight when magnesium
burns __ ___.The closera bitthe moreListen again and fill in the blanks.find outin airMr C: That’s right. So what do we _____
____?
ZK: Um… We need some magnesium. How much do we need? What about this piece? Is this piece OK?
Mr C: No, we need ______ more than that—about two and a half grams. We need a piece which is _____ _______ than that. rathermuchneedfirstbiggerZK: OK… And we need a _______ ______
… __ ______ … and __ _______ to put the metal in … Here they all
are … Where do we ___ _____ ____?
Mr C: Well, ____, put the magnesium in the crucible. _____ put the crucible on the balance and weigh it.
ZK: OK…Bunsen burnera balancea cruciblego from herefirstThenMr C: How much does it _____? Take a look, everyone. Is it any heavier?
ZK: Um… It weighs ___ ____ __ ____
grams. Do you want me to write that
down?
Mr C: Yes, write it down. ____ _____?
ZK: Yes… Um, next, we’re going to heat
the magnesium. So I light the
Bunsen burner. _____ _____, I hold
the crucible over it… Oh look, it’sWhat nextAfter thatweightwo and a half burning with a white light! It’s
getting _______ ____ ________!
Mr C: It’s pretty, isn’t it? _____ ____
____ _____, boys and girls, please.
ZK: Um…_____, we need to weigh the
magnesium again… It weighs four
grams now.
Mr C: So what does that tell you?
ZK: It weighs __ _____ more than before.brighter and brighterKeep thelastlya littlenoise downMr C: How much more?
ZK: ___ grams more.
Mr C: And what does that mean?
ZK: It means that there is __ ______ in
weight when magnesium burns in air.
Mr C: ______ ___ __! Well done! So now, let’s do the same experiment with copper. _____ ______. Li Kang,You’ve got itCome along1.5a change ____ _____ ____ now. What do you think will happen if you ____
______?
ZK: I think it’ll be a lot heavier than magnesium. Shall I begin?
Mr C: Yes, ___ ______!it’s your turngo aheadheatcopperThank you.课件32张PPT。Read the passage as quickly as you can and choose the best title for it.The Different Uses of Metals
The Reaction of Metals
The Reaction of Metals with Oxygen Passage AWe can reach a conclusion that it is
important for us to read books. It is our aim to build up a harmonious society. It is a piece of electrical equipment. The stone contains potassium. sodiumcalcium magnesium The wheel is made of aluminum. zinc oxide Nails are easy to rust in the damp air. Water boils at 100 °C. Read the passage again and answer the following questions:1. Which of the metals in the table reacts the most with oxygen and water?
Potassium, calcium and sodium.
2. What happens when you heat calcium in oxygen?
It burns to form an oxide.3. Which metals react with steam?
Magnesium, aluminium and zinc.
4. Does iron have a slow or fast reaction with steam?
It has a slow reaction.
5. Does copper react with water?
No, it doesn’t.Read the passage and fill in the chart. Passage Bcotton
woolwater water nailswater Iron does
not rust Iron does
not rust Iron rusts 1. In the first part of the experiment, the ___ is dry, not wet.
2. It shows that iron ___________ when the air is dry.
3. In the second part of the experiment, you must ____ the water to make sure there is no ____ in it.airdoes not rustboilairRead the passage again and complete the sentences.4. You add _________ to the water because this keeps ____ out of it.
5. It shows that ____ does not rust in water that has no ____ in it.some oilairnail airComplete the passage with proper words according to Passage A and B.It is hard to think of a world without metals. Different metals have different uses, for example, iron can be used in ________ equipment. But above all we should know whether it will ____ under electricalreactdifferent conditions. Otherwise it will keep the equipment from working well. As we all know, if iron is heated in oxygen, it will react slowly but will not form an _____. oxideOn the other hand, if it is put together with water or _____, there will be a ______ reaction. Next let’s do an __________ to support the above. First, get a test tube filled with water and put it over the _____________ to ___ for three minutes. steampartialexperimentBunsen burnerboilThen put three or four clean nails in the water with some oil added to it and leave the tube for one week. What happens? The iron does not ____ in air-free water. Another experiment, if you put the nails in the tube with the air in it for one week, then what happens? Iron rusts in _______ water. rustordinaryRead about an incident during a chemistry lesson and choose the best summary.Reading on P93A student didn’t follow the instructions carefully. He took the wrong liquid from the cupboard and nearly poisoned the class.
2.The chemistry teacher was demonstrating an experiment when she heated a poisonous liquid. There was so much smoke that the students had to leave the room. 3. A student was doing a chemistry experiment when he accidentally heated the wrong liquid and caused an incident in the laboratory.Read the passage again and answer the questions:1. What substances were they using?
Baking soda and hydrochloric acid.
2. What substances were the students making?
Salt. 3. How can they make the reaction quicker?
By making the mixture hotter.
4. What mistakes did Paul make?
He used the wrong liquid.5. Why did he make the mistake?
Because there was no label on the bottle.
6. What happened when Paul heated the liquid?
It formed a thick cloud of white gas.7. Why did the teacher send the students out of the room?
Because the liquid was acrylamide and the gas was poisonous.
8. What lesson did the incident teach the students and the teacher?
Never to leave a bottle without a label in the chemistry lab.Learn the new words by heart.
Read Passage A and B and try to retell it.Homework 课件21张PPT。Important phrases:
1.add … to…
2.used…to…
3.in the area of
4.be proud of
5.be supposed toImportant sentence patterns:
1.In the cast twenty years, seven Canadian scientists have won the Nobel Prize.
2.I’m becoming more and more interested in physics and have decided that I want to study it at university.1. After the new technique was introduced, the factory produced ________ tractors in 1988 as the year before.
A. as twice many B. as many twice C. twice as many D. twice many as √2. Paper produced every year is______ the world’s production of vehicles.
A. the three times weight
B. three times the weight of
C. as three times heavy as
D. three times as heavier as √3. We advertised for pupils last autumn, and got_______60.
A. more than B. more of
C. as much as D. so many as √4. It is generally believed that teaching is ____it is a science.
A. an art much as
B. much an art as
C. as an art much as
D. as much an art as √5. How beautifully she sings! I’ve never heard_________.
A. the better voice B. a good voice C. the best voice D. a better voice√6. If the manager had to choose between the two, he would say John was _______choice.
A. good B. the best
C. better D. the better
√7. "Are you satisfied with her answer? " "Not at all. It couldn’t have been______".
A. worse B. so bad
C. better D. the worst
√8. Professor White has written some stories, but he is _____known for his plays.
A. the best B. more
C. better D. the most√9. In recent years travel companies have succeeded in selling us the idea that the further we go, _____.
A. our holiday the will be better
B. our holiday the will be the better
C. the better our holiday will be
D. the better will our holiday be √10. I’m -_____ at sums than Jean, but better at history.
A. more B. less
C. worse D. cleverer√11. We couldn’t have picked ______ day for the picnic because it rained nonstop.
A. a worse B. a worst
C. the worse D. the worst√12. This bird is really lovely, and I’ve never seen _____ one.
A. a finer B. a finest
C. the finer one D. the finest√13. His pronunciation is bad, but mine is _____.
A. no better B. no more
C. even better D. even more√14. Holiday flights are getting ______ expensive, and we can go by plane.
A. more and more
B. less and less
C. by far D. so much√1.眼睛对光有反应。
2.他仅仅念了一年书。
3.他的话是冲着你说的。The eye reacts to light.His school education added up to no more than one year.His words were aimed at you.翻译句子4.妈妈给我煮了一个鸡蛋。
5.他的身体失去平衡，跌倒了。
6.他可能得出结论她撒谎了。Mother boiled me an egg.He lost his balance and fell down.He might conclude she had told a lie.7.他已经养成了读书做笔记的好习惯。
8.它是由什么物质组成的？
9.这部机器是用蒸汽推动的。
10.我从来没看过这么好的电影。He has formed the habit of taking notes while reading.What substances does it consist of?This machine is driven by steam.I’ve never seen such a better film.Everyday English:
1.Where do we go from here?
2.Keep the noise down.
3.You’ve got it.
4.It’s your turn
5.Go ahead Homework:
Write an incident that have happened in your science lab.bye-bye课件8张PPT。Task Writing skills buildingHow to write a letter?
Greeting: " Dear (name)"
Introduction:
Say why you write the letter
What the reader wants to hea
What you want to tell the reader
Conclusion: Make plans for next time
Signing off: "Sincerely," How to write a diary
Date and weather:
"Mon. Mar. 5th, 2006 Fine"
Introduction:
What will you talk about in your diary?
How will you express your feeling?A version of a letter Problem: You want to write a letter to a new American pen pal to introduce yourself.Dear John,
My name is Li Si, and I am a Beijing high school student. I am very happy to be your pen pal.
My father is an engineer and my mother is a doctor. They are very busy. I have no brothers or sisters, but I am not lonely because I have many school friends. As a Chinese student, I must study hard so I can make my parents proud of me. I like to play the piano, but I am not very good. I need to practise more, but when I have time I would rather go out with my friends or watch television. I also like to listen to music, especially American music. I like to watch NBA basketball, but I am too short to play. Also, Chinese boys do not want us girls to play. They are very mean.I am very happy to have a new American friend because I like American music and sports. I also want to go to America to study some day. What are the American universities like? Do you think that they give students a good education?
If you have time, please write back and tell me about your life. I am very curious.
Sincerely,
Li SiThank you!
