课件22张PPT。Lesson 25Unit 5 Look into Science5UnitLesson 25
Let’s Do an Experiment！学习目标objectivesThe new words: experiment, jar, upside, pour, correct, scientific, method, raincoat, force, pressure, conclude
To understand the theory of the experiment.
To learn actively.
Wordsexperiment
jar
upside
pour
correct
scientificn. 实验；试验
n. 广口瓶；罐子
n. 上部；上边
v. 倒出；倾倒
adj. 正确的；恰当的
adj. 科学的Wordsmethod
raincoat
force
pressure
concluden. 方法；办法
n. 雨衣
n. 力量
v. 迫使；强迫
n. 压力；压强；挤压
v. 得出结论；推断出Lead inDiscuss Do you like to do experiments?
What experiments have you done?Listen to the tape and answer the following questions.1.What’s Danny’s theory?
2.What’s Jenny’s theory?
Danny thinks the floor will get wet. Jenny thinks the water will stay in the jar.Pre-readingWhile-readingRead the lesson and answer the questions.1.Where does Danny think they should do the experiment?
2.What keeps the water in the jar?
3. Is Jenny sure of her theory? How do you know?
He thinks they should do it outside.The force of the air.Yes, she is. She thinks that Brian can do the experiment over Danny’s head.
4. Why does Danny put on his raincoat?
5. What does Danny conclude?
He thinks the water will pour out.The air is stronger than he thought.I fill a jar with water.
我用水把瓶子装满。
fill …with…用…装满……
He has filled his case with many books.
他已经把书装满了箱子。
cover…with… 用……盖住……
Language Points2. I turn the jar upside down. 我把广口瓶倒置。upside down “向下翻转过来”.
You hold the book upside down.
你把书拿倒了。
right side up “正面朝上”be sure +that 从句表示“认为…一定…” 而be not sure 表示不确定.e.g. I’m sure she will come here.
我确信她会来。
I’m not sure when he’ll come here.
我不能肯定什么时候来这儿。I’m sure the floor won’t get wet.
我确信地板不会湿。4. We’ll do the experiment and observed what will happen.
我们将做这个实验并观察会发生什么情况。
observed 动词, “观察”。
observe sb. do/ doing sth.
e.g. I observed her dance.
When I passed by the grass, I observed him
walking.Fill in the blank with the proper word. The first letter is given.1. Let’s do the e and see what
happens.
2. A “t ” is an idea and predicts what
will happen.
3. We can p who’s right.
4. Turn the jar u down and we can see
what will happen.
5. “O ” is another way of saying
“watch carefully”.xperimentheoryrovepsidebserve Let’s do an interesting experiment. First, I ____ a jar _____a desk, ____it _____ water, then _____the top ____ a piece of cardboard. When I ____the jar ______ _______, can you guess what will happen? putonfillwithcoverwithturnupsidedownHow do we do the experimentPost-readingLet’s Do It ! In a small group, try the experiment above. Try it with the jar full. Try it again with the jar nearly empty. Write down your observations.
Did the experiment work?
Did anyone get wet?
A balloon is full of air. If we pierce(刺破) it with a needle, it will break with a loud bang. But if we put a piece of glue on the balloon and do the same experiment, what will happen?
Surprisingly, we won’t hear the same sound. The balloon will become smaller and smaller. We will feel that the air is running out slowly through the pinhole(针孔). We know the balloon is made ofAn Experiment about a Balloonrubber(橡胶). When the balloon is pierced, the air
leaving the balloon forms a kind of force. Rubber is
so thin that it can’t support(支撑) such force. So
the balloon breaks quickly with a loud bang. But
the glue is different. It’s strong enough to support
the force of the air.
People have learned something from this
experiment. They have used this
method to make tires(轮胎).An Experiment about a BalloonI. 根据汉语或首字母提示，完成下列句子。1. It is the best ________ (方法) of working out the math problem.
2. Have you heard of the ________ (理论）before?
3. My daughter likes _________ (科学) more than English.
4. Your answer is wrong, and we can do an experiment to p_____ it.
5. Don't turn the bottle u______ down. It's too dangerous.psidemethodtheorysciencerovePractice1. He locked the door ________ (careful) before he left.
2. Let's ______ (finish) the work together now.
3. Can you guess what __________ (happen) in 100 years?
4. What's another way of _______ (say) “autumn”?sayingII. 用所给单词的适当形式填空。carefullyfinishwill happen1. 我确信你是一个诚实的人。
I ______ ______ that you are an honest man.
2. 请用一块玻璃盖上那个杯子。
Please ______ the cup _____ a piece of glass.
3. 小心，否则你会弄湿的。
Be careful, or you'll ______ ______.
4. 把箱子倒过来，你会找到标签的。
______ the box _______ _______, then you'll find the label.III. 根据所给汉语意思翻译下列句子。am surecover withget wetTurn upside downHomeworkHomeworkDo the experiment by yourself.Finish the exercise of this lesson.课件27张PPT。Lesson 26Unit 5 Look into Science5UnitLesson 26
Keep the Candle Burning学习目标objectivesMaster the new words and phrases: holder, shallow, lighter, match, examine, oxygen； use up
Learn to do the experiment with candle.
Know more about science.
holder n. 支托物
candle holder n. 蜡烛座
shallow adj. 浅的
light v. 点燃
lighter n. 打火机；点火器
match n. 火柴
burn v. 燃烧
examine v. 检查
oxygen n. 氧气
use up 用完
WordsLead inmatchburncandle holder n.Think about itDo you think science is interesting①? Why or why not?
Name one or two famous Chinese scientist. What do you know about them?Science is so interesting! I’m sure you’ll like this experiment!What do you need?A candle
A candle holder
A big glass jar
A shallow dish with water②
matchesWhile-readingWhat do you do? 1. Put the candle in the candleholder.
2. Put the candleholder in he dish.
3. Fill the dish half full of water.
4. Light the candle ③.
5. Let the candle burn for two or three minutes.
6. Carefully put the jar over the candle until the top of the jar rests on the dish ④.
7. Look at the water in the jar. What observation can you make?What is happening?As the candle burns⑤, it uses up oxygen in the air. When the candle stops burning, it has used up all the oxygen in the jar. The water inside the jar then rises⑥. How far did the water rise? There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar⑦. Language points Keep the candle burning! 让蜡烛燃烧！
keep sth. (sb.) doing, 使某物（某人）保持做某一动作。
e.g. Don’t keep the water falling.
不要再让水继续流了。
She kept me holding the far with my hand. 她让我一直用手握住瓶子。1. Do you think science is interesting?
你认为自然有趣吗？
science 科学；scientist自然科学，科学家
e.g.
Wang Peng loves science very much. He wants to be a scientist.
王鹏非常喜欢科学。他想成为一名科学家。2. a shallow dish with water一个装水的浅盘
shallow adj. 浅的
反义词：deep深的
e.g. Please pass me a shallow dish (plate).
请递给我一个浅盘子。
The idea of the passage is very shallow. I can understand it. 这篇短文的意思很浅显，我能读懂它。 ① light v. 点燃，照亮
It’s time to light up.
该点灯了。
It’s cold in the room. Let’s light a fire.
房间里太冷了。咱们把火生起来吧。3. light the candle 点亮蜡烛
= make the candle burn使蜡烛燃烧 ② light n. 光，光线（不可数）；电灯（可数）
The moon light comes into the room through the
window.
月光透过窗子照进了房间。
Don’t forget to turn off the lights when you leave.
当你离开的时候不要忘了关灯。 ③ light adj. 颜色浅的（反义词dark）；
（分量）轻的（反义词heavy）
Rose likes the light green skirt.
罗斯喜欢那件淡绿色的裙子。
The bag is very light. Mary can carry it easily.
那个包很轻。玛丽能轻易地把它搬起来。4. Carefully put the jar over the candle.
小心地把瓶子倒扣在蜡烛上。
carefully adv. 仔细地，小心地
careful adj. 细心的，认真的
care v. 关心；在意
care(v.) + ful = careful (adj.)
careful ( adj. ) +ly = carefully (adv.)
Jenny is a careful girl. She does everything carefully. She often cares for others.
詹妮是一个认真的女孩。她做任何事情都非常仔细。她经常关心他人。5. As the candle burns, it uses up oxygen in the air.
当蜡烛燃烧的时候，需要消耗空气中的氧气。① as 在此为“当……的时候”。它有着多重意义。
Please do it again as I did.
请像我做的那样再做一遍。（像……一样）
As it is late, I have to leave now.
由于天太晚了，我得走了。（由于，因为）
You will find the building as you reach the end of
the street.
当你走到这条街那头，你就会看到那座大楼。
（当……时候）② use up用光，耗尽。表示完全，彻底。
He was hungry and ate up the bread.
他饿了，把面包全吃光了。（eat up吃光）
Jim used up his money to buy the computer.
吉姆为了买电脑花光了所有的钱。
6. The water inside the jar then rises.
这时瓶子里的水就会上升。
rise v. 上升，升起（不及物）
The sun rises in the east.
太阳从东方升起。
The river is rising after the heavy rain.
大雨后河水上涨。
注意：raise“提高，升起”（及物）
Liu Fei raised her hand and asked a question.
刘菲举手问了一个问题。7. * There is about one fifth oxygen in the air, so the water rises and fills about one-fifth of the jar.
氧气在空气中占五分之一，所以水面上升并且占据了瓶子的五分之一。
*分数的表达：
分数 =
分子分母基数词序数词1序数词>1序数词+se.g. 1/3，one third
1/5, one fifth
3/4, three fourths
2/5, two fifthsPost-readingLet’s do itFinish the exercises on page 69 and check them.1. The water here is s______, not deep.
2. Let the fire b______ for a few hours. The room will be very warm.
3. Look! The boy is playing with some ________ (火柴).
4. There is little ______ (氧气) at the top of the mountains.
5. Mr. Black sat down and __________ (点燃) a candle.I. 根据首字母或汉语提示，完成下列句子。lit / lighted hallow urnmatchesoxygenPractice1. Please pass me the bottle full ______ water.
2. He is so hungry that he has eaten ______ all the food on the plate.
3. I usually put the candle ______ the candleholder.
4. Mr. Gao came into the classroom ______ a book in his hand.
5. The rainy day will last ______ three days. II. 用适当的介词填空。forofupinwith1. 当蜡烛停止燃烧时，它已用光了空气中所有的氧气。
When the candle _______ ________, it ____ ______ ______ all the oxygen in the air.
2. 我们班里五分之三是女生。
_____ _____ of the students in our class are girls.
4. 为了完成那项工作，他工作了十个小时。
____ _____ the work, he has worked ____ ten hours.III. 根据汉语提示，翻译下列句子，每空一词。stops burningupThree fifthsTo finish forhas usedHomeworkChoose a experiment that you did before, and describe it in English.Homework课件19张PPT。Lesson 27Unit 5 Look into Science5UnitLesson 27 Planet Danny学习目标objectivesTo master the words and expressions： solar, telescope, certainly, unless, double, mystery;
solar system, at night, even if;
It’s worth a try, even if I don’t find a planet.To learn about the solar system and how to use the telescope.Wordstelescope
solar
solar system
certainly
unless
double
mystery
n. 望远镜
adj. 太阳的；关于太阳的
太阳系
adv. 当然；确定；肯定
conj. 除非；如果不
n. & adj. & adv. 双倍（的）
n. 神秘事物；奥秘Lead inWarming upDo you know any of the planets in the solar system?
What would you like to look at with a telescope?Solar SystemPre-readingTelescopeListening TaskListening to the dialogue and tick the correct answer.What did Danny do last night?
He tried to study the moon.
He tried to find a new planet.
2. What did Danny use?
A telescope. A book.
3. What did Danny need?
More sleep. More stars.√√√While-readingRead the lesson and write true (T) or False (F).Danny is studying the solar system at school.
Danny is looking through the telescope when Jenny and Brian come to visit.
During the day, Danny can see many stars in the sky through the telescope.
Jenny and Brian will join Danny after supper.
Danny has discovered a new planet.TTFTFLanguage points 1. He looks through the telescope.*辨析through与across:through: 指在立体空间中穿过; 多指穿过门、窗、洞、森林等。across: 指从某事物表面的一边穿到另一边;多指穿过街道、马路、桥梁、河流等。The moonlight is shining in _______ the window. Everything in the room looks so nice.
A. over B. across C. through D. pastthrough 介词，穿过，从……中通过C2. The stars come out at night.The great writer has written many stories for children. It is said that a new one will _______ at the end of this month.
go out B. come out
C. look out D. run oute.g. These flowers come out at night.
When will Li Lei’s new book come out?come out “出来”， 动副短语；无被动语态
还可表示： (花) 开放；出版；发表B3. Maybe Brian and I can join you after supper.e.g. He _______ (join) the army two years ago.
He ___________ (join) the army for two years.
He ________ an English club last year and
improved his English a lot. Join 加入；参加 （党派、组织、团体等），成为其中的一员。
*join 为短暂性动词，不能与表示一段时间的状语连用，若用可用be in 来代替。joinedhas been injoined4. I don’t think you can find one unless you have a bigger telescope.e.g. You will miss the bus unless you hurry up.
I won’t apologize unless she apologizes first.--We can’t be successful _____ we keep working hard.
-- I agree with you.
A. if B. unless C. because D. when unless 连词，除非；（= if ……not）引导条件状语从句。B作动词，意为“使加倍，翻倍” 如：5. Actually, double the size of your house.The number of the houses here may double in 5 years.
五年内这里的房屋的数量可能会翻倍。We’d like a double room. 我们想要一个双人间。作形容词， 意为“双倍的、两倍的、两用的”，在句中作定语或表语。如：6. Well, it’s worth a try, even if I don’t find a planet.e.g. The clock is worth ten dollars.
Knowledge is worth working for.
知识是值得努力的。He will come on time even if it rains.worth adj. 值得
be worth doing sth. 值得做某事even if 即使；纵然 （= even though）引导让步状语从句。Post-readingFree TalkWhat interests you about the solar system?
If you had a chance to go to a space, would you go?
单项选择。PracticeHomeworkHomeworkPreview the words and expressions in Lesson 28.Finish the exercise of this lesson.课件28张PPT。Lesson 28Unit 5 Look into Science5UnitLesson 28
The Study of Living Things学习目标objectivesTo learn some new words:
biology，fantastic, butterfly……
To understand the passage.
To learn Attributive clause.
Lead in1.Would you like to be a biologist when you grow up? Why or why not?
2.What mysteries of nature do you know about?Think about it生物
蝴蝶
迁徙; 移居
奇异的
完全地
孙子(女)；外孙(女)
雌性
马利筋（一种植物）
化学物质
令人费解的biology n.
butterfly n.
migrate v.
fantastic adj.
completely adv.
grandchild n.
female n.
milkweed n.
chemical n.
puzzling adj.WordsPre-reading1.引起某人的注意 2.回到、返回 3.多达 4.下蛋 5.在大学里
6.小片的森林
7.动身去某地 draw one’s attention Useful expressions:return to…as many as
lay eggs
at a universitysmall piece of forestleave for
While-reading1. In the United States and Mexico, farmers use chemicals that kill milkweed.
2. Do the females lay eggs on only one plant?
________________________________.
3. What does Dr. Chip Taylor study?
_______________________________________________.
4. Here, as many as ___________ butterflies spend the winter.
5.In Mexico, the butterflies always return to the same small piece of forest, which is only 20 kilometers wide .
___________________________________________Read the lesson and finish the exercise.FYes, they doHe studies one kind of North American butterfly230 million在墨西哥，这种蝴蝶总是回到仅有20千米宽的同一小片森林。T√1. 有关attention的短语
2. as…as 的用法
3. lie 与 lay的用法
fantastic
chemical
have been drawingLanguage Pointsattentiondraw one’s attention to sth.
(使某人注意某事).2. catch one’s attention
(引起某人注意)3. pay attention to sth.
(注意、留心) 4. give one’s attention to sth.
(关心)as…as…1. He is ___________ his father.(像……一样高)
2. I do my homework ___________ my sister does.(像……一样认真)
3. They see ___________ one hundred students in front of the library. (像……一样多)
as tall asas carefully asas many aslie 与 layThe hens _____ (lay) eggs every day.
Have you ever ______ (lie) to your parents?
layliedlay (下蛋) --- laid --- laid --- laying
lie (说谎) --- lied --- lied --- lying
lie (平躺) --- lay --- lain --- lying作形容词，意为“奇异的、极好的、了不起的”，在句中作定语或表语。如：4. fantasticI think this is a fantastic invention.
我想这是一个了不起的发明。作可数名词，意为“化学物质、化学制品”，复数形式是chemicals。如：There are no chemicals in this kind of food.
这种食品中没有化学物质。5. chemical作形容词，意为“化学的、化学作用的”，在句中作表语或定语。如：We can find chemical additives in many foods.
我们在很多食品中发现了化学添加剂。句中的have been drawing 是现在完成进行时，它由“助动词 have (has) + been + 现在分词”构成，当主语是第三人称单数时用助动词has，其他情况用助动词have。6. Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention. 它往往与表示一段时间的时间状语连用，如：all the time, this month, all day, these few days, for a year, since a week ago等。She has been playing basketball after school this week. 这个星期她放学后一直打篮球。
Tony has been drawing in his bedroom all the afternoon. 托尼在卧室画了一下午。What do you think is the most fascinating thing in nature?Post-readingDiscussion Are you familiar with these sentences?
They are from the books we have learned. 1. In Mexico, the butterflies always return to the same small piece of forest, which is only 20 kilometres wide.
2. The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.3. But in Mexico, people cut down the trees that the butterflies need to rest on because they want more land for farming.
4. In the United States and Canada, farmers use chemicals that kill milkweed.Attributive Clause
定语从句Grammar 定语从句是指在句中作定语的______。先行词是被定语从句所修饰的词 （通常是名词或代词）。关系词，也叫作引导词，是在从句中替代先行词，在定语从句中充当一定的成分，通常是______或______，作_____时常可以省略。先行词为人时，引导词常用_____或_____；先行词为物时，引导词常用______或_______。从句主语宾语宾语whothatthatwhich定语从句Attributive ClausesThe boy who is wearing a black coat bought an iPod yesterday.The experiments that we did yesterday were fantastic. 主语定语从句定语从句主语修饰the boy修饰 experiments关系词特殊情况下，由that引导的定语从句：1.先行词为all, everything, nothing, something,
anything, little, much 等不定代词时。
2. 先行词被all, little, much, every, no 等修饰时。
3. 先行词被序数词或最高级修饰时。
4. 先行词被the only, the very, the same, the last
修饰时。
5. 先行词为人和物的组合。
6. 主句是who/which开头的特殊疑问句。请给下列的定语从句补充引导词。
1. Who is the girl _____ talked to you yesterday.
2. Look at the photos ____________ I took on my trip.
3. It successfully shows the rich culture_____________
makes Beijing so famous.
4. The photo____________ we liked best was taken by
Zhao Min.
5. His father is the person_____________ will be most
unhappy.
6. Tom is the boy ________ we saw in the shop.
thatthat/whichthat/whichthat/whothat/whichthat/who7. I am sure she has something ________ you can
borrow.
8. I’ve read all the books ________ are not mine.
9. This is the first book__________ he has read.
10. This is the very book ______ belongs to him.
11. They talked for an hour of things and persons
_________they remembered in the school.
thatthatthatthatthatFinish the exercise on P73, 2Practice1.To grasp the contents
of this lesson.
2.Preview Lesson 29.HomeworkHomework课件23张PPT。Lesson 29Unit 5 Look into Science5UnitLesson 29
DNA--The Story of You学习目标objectivesThe new words:
DNA, blueprint, general, complex, twin, repeat, pattern, identify, related, grandson, granddaughter, instruction
Train the speaking and writing abilities.
DNA blueprint
general complex
twin repeat
pattern identify
related grandson
granddaughter instructionNew WordsDo you and the students near you look the same? What is the same? Warming upLead inThink about it!
What do you know about DNA?
2. What can scientists do with DNA?This is the shape of DNA. Do you think it’s magic?“DNA” is short for deoxyribonucleic acid.The two girls are twins. Maybe they have the identical DNA. [identical（adj) ---identify (v.)]Why?Fang Zuming looks like his father—Cheng Long. Listening TaskGenerally speaking, a ________ is a drawing.
______ for identical twins, each living thing has its own unique DNA.blueprintExceptWhile-readingRead the lesson and answer the questions：What is a blueprint?
Which is more complex, building a living thing or building a house?
Do some twins have the same DNA?
Is it possible to change your DNA?
Whose DNA is related to yours?What is a blueprint?
Which is more complex, building a living thing or building a house?
Do some twins have the same DNA?
It’s a drawing that shows how to put a house together with many different parts.Building a living thing is far more complex than building a house.Yes, they are.4. Is it possible to change your DNA?
5. Whose DNA is related to yours?In the future, scientists might be able to change my DNA.My parents and grandparents. 1. But building a living thing is far more complex than building a house. Language points 比较级前可以用much, even, still, far, a bit, a little, a lot 等词加以修饰。This unit is much easier than that one. 这个单元比那个单元容易得多。2. own 的用法
1）adj. 自己的 （用在所有格后，加强语气）
Now ask the same questions about your own teachers.
She makes all her own clothes.
2) vt. 有，拥有
Who owns the bike?3. except for 除……以外，只是
He is a good man except for hot temper.
Your article is quite good except for several spelling mistakes. 4. not only ... but also ... 不但……而且……
连接两个相同的成分，也可以连接两个分句。当接两个主语时，谓语动词和后面主语保持一致。
e.g. He likes not only English but also math.
Not only you but also I am a teacher.
5. relate to 涉及；有关
e.g. The story related to the Second World War.
I have a book relating to the Autumn Harvest Uprising. Post-readingFree TalkIs it a good idea to change the DNA of the food we eat?WritingWrite down your ideas……PracticeFill in each blank with the proper word.
1. This is the __________(identify) hotel that we stayed in last year.
2. Your brothers are people _________(relate) to you.
3. Do you know who is the _________(own) of the house?
4. Your body uses this pattern _________ (build) itself.identicalrelatedownerto build5. You have your own DNA, but it repeats the patterns from your __________(parent) DNA.
6. Some health problems come from your family’s DNA. _________(science) can look for these problems in your DNA.parents’Scientists根据汉语意思完成句子，每空一词：
1. 我们用蓝图建造房子。
We _______ a blueprint ______ _______ a house.
2. 除了窗子小外,这座房子很漂亮。
The house is beautiful ______ _____ the small
windows.
3. 你的头发和皮肤有同样的DNA。
Your hair has ______ _______ _______ _____ your skin.
4. 她不但会唱歌，而且会跳舞。
She can _____ ______ sing ______ ________ dance.use to buildexcept forthe same DNA asnot onlybut alsoHomeworkHomework1. Write a passage about DNA, try to tell what it is, where it is from, what things you show your parents’ DNA?
2. Preview Lesson 30. 课件21张PPT。Lesson 30Unit 5 Look into Science5UnitLesson 30
Science Affects Us学习目标objectives1. Words and expressions：mobile
phone, suggest, affect, development，
discovery, in place
2. Continue to learn Attributive Clause.
3. Keep trying and never give up.Lead inSome Experiments1.Have you ever done any interesting experiments? Can you describe one of them?
2.What would life be like without computers or mobile phones?Think about itPre-readingdiscovery
affect
suggest
mobile phone
developmentn. 发现
v. 影响
v. 建议
n. 手机
n. 发展New wordsRead L30 and fill in the blanks. Science affects people’s _________ lives. Without the scientific developments of recent years, our lives would be very different. Can you imagine life without computers or _____________? Scientific ___________ are making our lives better and better. DNA is really one of the most amazing things on the earth. Many people think it will ________ the world.everydaymobile phonesdiscoverieschangeWhile-reading1. Wang Mei didn’t enjoy learning about DNA. ( )
2. Who did an experiment in science class this week?
________________________________.
3. Does Wang Mei think the experiment they did sounds interesting?
_______________________________________________.
4. The air pressure _____________________________ is higher than that of the water pushing down from inside the jar.
5.I always wonder what life would be like without computers or mobile phones .
___________________________________________FBrian, Danny and JennyYes, she doespushing up on the cardboard我一直想知道如果没有电脑和手机生活会是什么样子。中考题型 课堂练1. I suggest you try it, too!
Language Points suggest v. 建议，提议
1) suggest sth. to sb. 向某人建议某事
2) suggest doing sth. 建议做某事
3) suggest that (should + do) 建议……
4) suggestion n. 建议2. The experiment you did sounds interesting.*定语从句；先行词为experiment，(that) you did为从句。*…sounds interesting 听起来有趣
sound接adj. 作表语。3. Scientific discoveries are making our life better and better.This is an important discovery.这是一个重要的发现。We have discovered their secrets. 我们已经发现了他们的秘密。* discovery作可数名词，意为“发现、发觉”，复数形式是discoveries。如：discover是及物动词，意为“发现”，后加名词、代词或宾语从句。如：e.g. 张家口变得越来越美丽了。
Zhang Jiakou is getting more and more
beautiful.* better and better
比较级+and+比较级 “越来越……”。Free TalkPost-reading
How do these inventions affect our everyday lives? What life would be like without these inventions?
Ⅰ. 单项选择。
( )1. —Bob never does his homework _____
Mary.
—Yes, he makes lots of mistakes.
A. so careful B. as carefully as
C. carefully D. as careful asPractice( )2. —Do you know this boy?
—Which boy?
—The one _____ under the big tree.
A. lay B. lain C. laying D. lying
( )3. —How do you know that she likes singing?
—I often hear her _____ after class.
A. to sing B. sang
C. sing D. sings( )4. They stopped _____ , but there was no more sound.
A. to listen B. to hear
C. listening D. hearing
( )5. My younger brother isn’t _____ to take care of himself.
A. enough old B. old enough
C. small enough D. enough small1. The man is ____________ (bad) hurt.
2. Don’t be ____________ (scary). You will be OK.
3. —Are you hurt?
—No, I’m not ____________ (injure).用所给词的适当形式填空。 badly scared injured完成句子。
1. Don’t worry about your son. It’s ____ ____ (没什么严重的).
2. We needn’t ____ ____ ____ (叫救护车).
3. ____ ____ (小心)！There is something dangerous ahead.
答案: 1. nothing serious
2. call an ambulance
3. Be careful4. He ____ ____ ____ (尽力赶上)the early bus, but it was too late.
5. Don’t worry about him. I can ____ ____ ____ (照顾) him.
答案: 4. tried to catch 5. take care of1. He didn’t agree to go there with us.
He __________________ there with us.
2. Why don’t you go swimming with me?
Why _____________ swimming with me?
3. Grandma takes care of my sister every day.
Grandma ____________ my sister every day.
4. You don’t have to go home today.
You _______________ home today.同义句转换。（每空一词） refused to go not go looks after needn’t go Homework
1.Finish off the rest exercises.
2.Preview lesson 31.Homework
