《When was it invented?》SectionA PPT
《When was it invented?》SectionA PPT
第一部分内容：新课导入
被动语态(Passive Voice ) be + done
He speaks English.
is spoken by
主动语态：主语 + 动词 + 宾语
被动语态：主语 + be + 过去分词 + by + 宾语
Many people use computers.
Computers _____ ________
by _______ _________.
The workers plant trees in the garden.
Trees _____ _______ in the garden ____ the workers.
... ... ...
《When was it invented?》PPT，第二部分内容：Exercise
1. Trees __________ (water) in our school every three days.
2. The zoo ___________ (visit) by lots of children on weekends.
3. A Journey to West ________ (show) on CCTV every summer.
4.On Christmas Day, children wake up early and can’t wait ______ (open) the boxes of presents.
5. We’ll have a chance _____ (see) the flower show this weekend.
... ... ...
《When was it invented?》PPT，第三部分内容：Language points
be made of 由某种物质做成(看得出原材料，物理过程)
be made from 由某种物质制成(看不出原材料，化学过程)
be made up of 由几部分组成
be made in 在某地/某时制造
be made by 由某人制造
be made into 被制成
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《When was it invented?》PPT，第四部分内容：Listen, look and say.
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.
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
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《When was it invented?》PPT，第五部分内容：Let’s sum up together.
聚焦一般过去时的被动语态
结构:助动词(was/were)+及物动词的过去分词
1.肯定句式 ：主语+was /were+v.-ed
2.否定句式 ：主语+was/were + not+v.-ed
3.一般疑问句式： Was /Were+主语+vt.-ed
4.特殊疑问句式：疑问词W/H+was/were+主语+v.-ed
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?
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《When was it invented?》PPT，第六部分内容：Read 1a and answer the following questions.
1. Why did Kankang ask Jane not to spend too much time on computer games ?
It’s bad for her health if she spends too much time on them.
2. What’s a rocket used for?
It’s used for sending satellites or spaceships into space .
be used for 被用来做
be used to do 被用来做
be used as 被用作
used to do sth. 过去常做
be used to doing sth. 习惯于做
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《When was it invented?》PPT，第七部分内容：Exercises
Change the following sentences.
1.My mother allows me to use her cellphone.(改为被动语态)
I _____ ______ _____ use my mother’s cellphone.
2.A rocket is used for launching satellites and spaceships.(就画线部分提问)
____ ___ a rocket ___ ___?
3.The digital camera was invented in 1975. (就划线部分提问)
____ ____ the digital camera _______ ?
4. Maybe he is an inventor. (改为同义句)
He ____ ____ an inventor.
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《When was it invented?》PPT，第八部分内容：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.
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《When was it invented?》PPT，第九部分内容：Assignment
Read 1a.
Memorize the useful expressions and key sentences that we learn today.
Finish Section A in your workbook.
Preview Section B.
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