《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

... ... ...

《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

... ... ...

《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?

... ... ...

《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

... ... ...

《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.

... ... ...

《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. 

... ... ...

《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.

《When was it invented?》SectionD MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。

《When was it invented?》SectionC MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。

《When was it invented?》SectionB MP3音频课件 文件内包含本课教学使用的MP3音频文件，非常适用于本课教学。