(共16张PPT)
UNIT
5
Lessons 25 - 30
Look into Science !
Functions:
Grammar:
Structures:
Talking about Science
Attributive Clause
That’s called the scientific method
Well, it’s worth a try, even if I don’t find a planet.
In general, a blueprint is a drawing that shows how to put a house together with many different parts.
Scientific discoveries are taking our life better and better.
We Will Learn:
Lesson 25:
Let’s Do an Experiment!
1) get 的用法及短语：get warm, get along\on\well with, get away from, get back, get in, get off get up, get together, get through, get to
2) sb. be sure + that 从句。“认为……一定……”
3) observe sb. do sth.
observe doing sth.
I. Learning aims:
II. Learning important and difficult points:
The new words: experiment, jar, upside, pour, correct, scientific, method, raincoat, force, pressure, conclude
correct
experiment
scientific
pour
jar
upside
method
raincoat
New Words
force
pressure
conclude
Think About It!
◆Do you like to do experiments
What experiments have done
◆ What experiment is Brian going to do
◆ What’s Danny's theory about what will happen
Language
Points
意为“用……覆盖……” 。如：
cover … with …
My mother covered the table with cloth. 我妈妈用布把桌子盖住了。
2.be sure of
意为“对……有把握”，介词of后加名词或代词作宾语。如：
Are you sure of this matter
你对这件事情有把握吗？
句中的enough to do…意为“足以……做某事”，这里的enough起副词作用，用在形容词或副词后作状语。
3. It is strong enough to hold the water.
Allan is old enough to go to work. 艾伦到上班年龄了。
Let’s Do It !
If Brian does the experiment, will the floor get wet Imagine what will happen. With a partner, make up a dialogue.
Exercises
I. 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.
pside
method
theory
science
rove
1. 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”
saying
II. 用所给单词的适当形式填空。
carefully
finish
will happen
1. 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 sure
cover with
get wet
Turn upside down
Homework
Master the important
vocabulary.(共14张PPT)
Lesson 26:
Keep the Candle Burning!
use up 的用法
I. Learning aims:
Master the new words and phrases: holder, shallow, lighter, match, examine, oxygen
II. Learning important and difficult points:
New Words
holder shallow
lighter match
examine oxygen
◆Do you think science is interesting Why or why not
◆ Name one or two famous Chinese scientists. What do you know about them
Think About It !
Language
Points
as 作连词，意为“当……时候”，引导时间状语从句。如：
1. As the candle burns, it uses up oxygen in the air. 当蜡烛燃烧时，它要耗尽空气中的氧气。
As he grew up, he became silent.
他长大以后，变得沉默寡言。
use up 意为“用完；用光”。use up 是动词加副词型短语，宾语是代词时必须放在use和up的中间；宾语是名词时，放在use和up的中间或 up的后面均可。如：
Don't use up all the hot water.
不要用光所有的热水。
（1） 分数的表达方式： 分子为基数词，分母为序数词。并且当分子大于1时，分母要用复数。如：
2. Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar. 空气中含有五分之一的氧气，所以水位上升并且占了罐子的五分之一。
five-eighths八分之五
（2） 带有分数的名词作主语时，谓语动词的单复数，要根据分数所修饰的名词来确定。如果分数所修饰的是可数名词复数，谓语动词用复数形式；如果分数所修饰的是不可数名词，谓语动词用单数形式。如：
About three-fifths of the students in Class One are boys. 一班五分之三的学生是男生。
Exercises
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
urn
matches
oxygen
1. 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。
for
of
up
in
with
1. 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 burning has
used up
Three-fifths
To finish for
Homework
Choose an experiment that you did before, and describe it in English.(共13张PPT)
Lesson 27:
Planet Danny
宾语从句
I. Learning aims:
II. Learning important and difficult points:
(1) The new words : telescope, solar, certainly, unless, double, mystery
(2) The important sentences:
① I will ask the class to make observations and guess what will happen.
② We’ll ask the students what the experiment proves.
New Words
telescope solar
certainly unless
double mystery
Think About It!
▲ Do you like science Why or why not
▲ Do you know any of the planets in the solar system
Language Points
作可数名词，意为“两倍、双倍”，复数形式是doubles。如：
double
Homework is double at weekend. 在周末作业是双倍的。
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：
动词join在这里表示“加入”，如果表示“加入到某人的某种活动中”可用句式join somebody in …。
Lisa, can you join us in the game 丽萨，你能和我们一起做游戏吗？
2. Maybe Brian and I can join you after supper.
Let’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
Exercises
1. Will the _______ (压力) of the air keep the water in the jar
2. The students made an __________ (观察).
3. Remember to take your _________ (游泳衣) when you go swimming.
swimsuit
I. 根据句意及汉语提示，完成下列单词。
force
observation
1. How did you get wet You need to dry yourself ______.
2. Don't turn the jar ______. It's dangerous.
3. They are talking ______ the 2020 Olympics to be held in Toyko.
4. Please sit ______ the chair and I will comb your hair for you.
5. Let's put the water ______ the bottle.
into
II. 用适当的介词填空。
off
over
about
in
1. clothes, be, funny, those, for, to, you, it, wear, will
___________________________________.
2. sure, not, left, I, where, key, I'm, the
___________________________________.
3. can, right, who, you, prove, are
___________________________________
4. hobby, school, bring, please, to, tomorrow, your
___________________________________.
Please bring your hobby to school tomorrow
III. 连词成句。
It will be funny for you to wear those clothes
I'm not sure where I left the key
Who can prove you are right
Homework
Do the experiment
after class.(共17张PPT)
The Study of Living Thing
Lesson 28:
I. Learning aims:
Master the new words: biology, butterfly, migrate, fantastic, completely, grandchild, female, milkweed, chemical, puzzling
II. Learning important and difficult points:
both… and…
biology butterfly
migrate fantastic
completely grandchild female milkweed
chemical puzzling
New Words
What do you do
1.Put eight spoonfuls of cornstarch into the bowl.
2.Add four to five spoonfuls of water.
3.Mix the cornstarch and water together.
4.Pour the mud into your hand.
5.Open and close your hand.
mix
What is happening
Some things dissolve in water. Sugar dissolves in water. Salt dissolves in water. But not cornstarch. It only mixes with water. When you close your hand and press, some of the water gets out. The mud becomes solid. When you open your hand, the water mixes in again. Now it is a liquid!
What else can you do
Put some of the mud in a bowl. Now hit the mud with your open hand. What happens Now do the same thing with water. Are the mud and water the same when you hit them
Language
Points
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：
fantastic
I 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。
2. 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。现在完成进行时主要表示从过去开始一直持续到现在的动作，这个动作是否延续下去，要根据上下文而定。
3. 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。
连词both…and…的意思是“……和……都，既……也……”，它可以连接句中句子成分相同的词语，如果用它连接主语时，谓语动词要用复数形式。
Both Li Ping and her mother take exercise every morning. 李萍和她妈妈每天早晨都进行锻炼。
4. This is both puzzling and interesting for many scientists.
Exercises
1. They gave us some good _____________ (suggest) on our work.
2. In order to get better _______________ (educate), she went to study in Beijing.
3. Who is the ____________ (design) of this new machine
4. He was ______________ (complete) wrong this time.
5. My mother took some ____________ (freeze) meat from the fridge.
frozen
I.用括号中所给词语的适当形式填空。
suggestions
education
designer
completely
1. The teacher told me to pay attention ______ my pronunciation.
2. We are getting ready ______ the work. Can we start now
3. Dr. Lee is interested ______ studying the life of butterflies.
4. I found a lot of useful information after looking ______ the Internet.
5. You must put more effort ______ your work if you want to succeed.
into
II.用适当的介词填空。
to
for
in
on
Homework
Preview the next lesson.(共21张PPT)
Lesson 29:
DNA—The Story of You
I. Learning aims:
The new words:
DNA, blueprint, general, complex, twin, repeat, pattern, identify, related, grandson, granddaughter, instruction
II. Train the speaking and writing abilities.
New Words
DNA blueprint
general complex
twin repeat
pattern identify
related grandson
granddaughter instruction
Warming up
Do you and the students near you look the same What is the same
Zhang Liangying looks like her mother.
Identical twins are two children that grew from the same egg. They have identical DNA. They’re clones!
Do you and the students near you look the same
What is the same
Are there any differences between you and them
What can scientists do with “DNA”
Free Talk
Listening Task
Generally speaking, a ________ is a drawing.
______ for identical twins, each living thing has its own unique DNA.
blueprint
Except
Reading Task
Where does your DNA come from
Parents.
Is your DNA in every part of your body
Yes, it is.
Listen and Think
Do you and the students near you look the same Are there differences between you and them
What can scientists do with “DNA”
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.
Students discuss these with their partners, then say out in class.
Let’s do it
Exercises
1. Everyone wrote a good poem _______ her. (除了)
2. _________ Tom, five other boys also passed the exam. (除了……还有)
3. ____________ identical twins, each living thing has its own unique DNA. (除……之外)
except
Besides
Except for
4. All the questions are easy _______ the last one. (除了)
5. There are many others _________ me.
(除了……还有)
6. We all went to Beijing ________ Tom, who has been there before. (除了)
except
besides
except
1. I can _______ swim _________ skate.
(不但……而且……)
2. 它不仅能说汉语而且还会说英语。
He can speak ____________________________.
3. Not only you but also I ____ (be) a teacher.
4. Not only I but also he _____ (know) the answer to the question.
am
not only Chinese but also English
not only but also
knows
5. Neither they nor I ______ good at singing.
A. are B. be C. is D. am
6. Both my father and I ______ in the country.
A. enjoys living B. enjoy to live
C. enjoys to live D. enjoy living
D
D
1. 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.(共12张PPT)
Lesson 30:
Science Affects Us
1) fun
① have fun doing sth.
② It’s fun to do/doing sth.
2) 辨析 find, look for, hunt
I. Learning aims:
The new words:
affect, suggest, development, mobile phone, discovery
II. Learning important and difficult points:
New Words
affect suggest
development mobile
phone discovery
Think About It !
◆Have you ever done any interesting experiments Can you describe one of them
◆ What would life be like without computers or mobile phones
Language
Points
作可数名词，意为“发现、发觉”，复数形式是discoveries。如：
1. discovery
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。
discover是及物动词，意为“发现”，后加名词、代词或宾语从句。如：
My sister is growing taller and taller. 我妹妹长得越来越高。
Our city is becoming more and more beautiful. 我们的城市变得越来越美了。
2. Scientific discoveries are making our lives better and better.
“比较级 + and + 比较级”表示“越来越”。
Exercises
1. We have got everything ________. Let’s start the experiment now.
2. This hall is big ________ to hold 1,000 people.
3. You can’t pull the door open. You have to ________it.
4. My father often _______ me to the park when he is free.
I.根据句意用适当的词语填空。
takes
ready
enough
push
1. 你能给我做个风筝吗？
Can you make a kite ______ ______
2. 他说他有很多工作要做。
He says he has a lot of work _________ _________.
3. 我们相信我们能在一周内完成工作。
We ______ _____that we can finish the work in a week.
II.根据所给的汉语完成句子，每空一词。
are sure
for me
to do
Homework
Preview next lesson.
