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(共25张PPT)
Unit 4 Amazing Science
Topic 1 When was it invented
Section A
is spoken by
She speaks Chinese.
is spoken by
He speaks English.
English
English.
He
him.
Chinese
Chinese.
She
her.
主动语态： 主语 + 动词 + 宾语
被动语态： 主语 + be + 过去分词 + by + 宾语
被动语态 (Passive Voice ): be + done
Review
Many people use computers.
Computers ________by ___________.
The workers plant trees in the garden.
Trees __________ in the garden
____ the workers.
are used
many people
are planted
by
Can you try ？
一般现在时的被动语态：
am/is/are+ 动词的过去分词
结构:
1.肯定句式 ：
2.否定句式 ：
3.一般疑问句式：
4.特殊疑问句式：
E.g. An e-mail was sent to her friend by Jane yesterday.
An e-mail wasn’t sent to her friend by Jane yesterday.
Was an e-mail sent to her friend by Jane yesterday
Who was the e-mail sent to by Jane yesterday
一般过去时的被动语态
was/were+及物动词的过去分词
主语+was /were+ 过去分词
Was /Were+主语+过去分词
主语+was /were+not+过去分词
疑问词+was/were+主语+过去分词
A: What’s the lock made of
B: It’s made of metal.
A: What’s it used for
B: It’s used for locking the door.
Follow the example to make up similar conversations.
lock/metal
2
be made of “由......制成” (看得出原材料）
be made from “由......制成” (看不出原材料）
A: What’s the paper made from
B: It’s made from wood.
A: What’s it used for
B: It’s used for writing on.
paper/wood
be used for doing sth. =be used to do sth.
被用来做某事
be made of 由......制成(看得出原材料，物理变化)
be made from 由......制成(看不出原材料，化学变化)
拓展：
be made up of 由......组成
be made in 在某地/某时制造
be made by 由某人制造
be made into 被制成
1
2
Language points
The bridge ___________ stone last year.
Paper ____________wood.
Our class ____________ 20 girls and 18 boys.
The watch __________ China.
This machine __________ those workers.
The metal ____________ a chair last year.
Exercises
is made of
is made from
is made up of
is made in
is made by
is made into
computer desk /wood
chopsticks/bamboo
sweater /cotton
watch/metal
Make up similar conversations.
A: What’s the computer desk made of
B: It’s made of wood.
A: What’s it used for
B: It’s used for putting computers.
computer desk /wood
chopsticks/bamboo
A: What are the chopsticks made of
B: They’re made of bamboo.
A: What are they used for
B: They’re used for eating.
A: What’s the sweater made from
B: It’s made from cotton.
A: What’s it used for
B: It’s used for keeping warm.
A: What is the watch made of
B:It’s made of metal.
A: What is it used for
B: It’s used for telling time.
sweater /cotton
watch/metal
A. What’s it made of
B. It’s made of metal.
A. Do you know what it is used for
B. It’s used for sending satellites
or spaceships into space.
Wow !A model rocket !
1a Listen, look and say.
1. Jane is unhappy because she was not allowed to go to
a party last night. ( )
2. Kangkang's father made a model rocket for him. ( )
3. The rocket is made of metal. ( )
4. A rocket is used for sending satellites or spaceships
into space. ( )
Listen to 1a and mark T (True) or F (False).
1b
F
F
T
T
Read 1a and answer the following questions.
1c
1. Why did Kankang ask Jane not to spend too much time on
computer games
2. What’s a rocket used for
3. Who taught Kangkang some knowledge about spaeships
4.What’s Kangkang’s dream
Because it’s bad for her health.
It's used for sending satellites or spaceships into space.
Mr. Brown.
His dream is to go into space some day.
Find out the key phrases from the dialogue.
1. （不）被允许做某事
2. 太多（修饰不可数名词）
3. 对......有害
4. 花时间/钱在某事上
5. 给某人看某物
6. 由......制成（看得出原材料）
7. 被用来做某事
8. 发射......进入......
9. 向......学习......
10. 实现，成真
be (not) allowed to do sth.
too much
be bad for
spend... on sth.= spend ...(in) doing sth.
show sth. to sb.= show sb. sth.
be made of
be used for doing sth.
send ... into ...
learn ... from ...
come true
Kangkang: Jane, why are you unhappy
Jane: Because I was not allowed to play computer games last night.
Kangkang: It's bad for your health if you spend too much time on them.
Jane: Maybe you're right.
(Kangkang shows a model to Jane.)
Kangkang: Look at this.
Jane: A model rocket! Who made it
Kangkang: It was made by me.
allow v. 允许
1. allow sb. to do sth. 允许某人做某事
2. allow doing sth. 允许做某事
3. be allowed to do sth. 被允许做某事
be bad for. = be harmful to = do harm to 对......有害
be made by 由......制造
Jane: Wow! What's it made of
Kangkang: It's made of metal. Do you know what a rocket is used for
Jane: Sure. It's used for sending satellites or spaceships into space.
Kangkang: You're right. I've learned a lot about spaceships from
Mr. Brown and then I made this model rocket. I wish I
could go into space some day.
Jane: I hope your dream will come true.
be made of 由某种物质做成(看得出原材料)
be made from 由某种物质制成(看不出原材料)
be used for doing sth.= be used to do 被用来做某事
A. Listen to the conversations and number the following pictures.
2
3
1
3a
B. Listen again and complete the table .
Invention Item laptop cell phone digital camera
Material
Usage
Year
country
plastic
plastic
metal and plastic
study, work and play
communicate
take photos
around 1985
1973
around 1975
Japan
America
America
Work in pairs. Ask and answer questions based on the table in 3a with passive voice.
A: What is a laptop made of
B: It is made of plastic.
A: What’s it used for
B: It is used for studying.
A: When and where was it developed
B: It was developed in Japan in 1985.
Example:
Focus on the meaning in communication. Don’t be afraid of making mistakes.
3b
Summary
We learn: 1.Some words: lock, rocket, metal, satellite, spaceship
2. Some phrases: be made of, be used of,
some day, come true
3. Some sentences:
(1) I wish I could go into space some day.
(2) I hope your dream will come true.
(3) -What is a rocket used for
-It’s used for sending satellites or spaceships into space.
We can: Use the passive voice.
Exercise
1. This machine （在…制造）China.
2. Everyone knows paper （由…制成）wood.
3. The desk （由…制成）metal.
4. The model ship （被…做）my father yesterday.
5. A watch （被用来）telling the time.
6.My mother allows me to use her cellphone.(改为被动语态)
I _____ ______ _____ use my mother’s cellphone.
7.If you study hard,I think you can make your dream .（实现）
is made in
is made from
is made of
was made by
is used for
am allowed to
come true
（一）用括号内所给单词的适当形式填空。

1. Smoking is not ____________(allow)in public.
2. The model rocket is ____________（make）of metal.
3. I spent two hours____________(walk) home last night.
4. The lock is used for ___________ (lock) the door..
5.I hope your dream _____________ (come) true in the near future.
6. This laptop _______________(develop) in Japan in 1985.

(二)用适当的介词填空：

1. The desk is made _________ wood.
2. The paper is made _________ wood.
3. MP3 is used ________ listening to music.
4. The watch is made ________Japan.
5. The model plane was made _________ my father.
allowed
made
walking
locking
will come
was developed
of
from
for
in
by
Homework
Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section A in your workbook.
Preview Section B.
Thank You !

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