Learning about Language第一课时导学案

Unit 3 computers

Learning about language

1.

Learning about language 1.To learn some useful words and expressions

2.To learn the present perfect passive voice.

3.To master the structure. Learning about Laguage

1.Fill the word or expression for each of the following meanings from the text.

1 ___revolution______ complete change in ways of

thinking, working, etc

2 ___network_____ connected computer system

3 _____simplify___to make things easier

4 ______calculate___ to find the answer using numbers.

Grammar The Present Perfect Passive Voice

现在完成时的被动语态:表示动作发生在过去, 到现在已经完成或对现在仍有影响。

1.

主动语态即主语为动作的者；被

动语态即主语为动作的承受者。现在完

成时的被动语态同它的主动语态一样，

强调过去的动作对现在造成的影响或结

果，但主语为动作的承受者，表示“……已经被……”。

The new school has been set up.

新学校已经建成了。

2. 现在完成时被动语态的肯定式为：

have / has + been + done

The experiment has been done successfully.

这个实验做得很成功。

现在完成时被动语态的否定式为：

have / has + not + been + done

Tom’s novel has not been published.

汤姆的小说还没有被出版。

练习题

1. When and where to go for the

on-salary holiday ___ yet.

A. are not decided

B. have not been decided

C. is not being decided

D. has not been decided

2. Every possible means ___ to prevent the air pollution, but the sky is still not clear.

A. is used

B. are used

C. has been used

D. have been used 3. All the preparations for the task

___ and we’re ready to start.

A. completed

B. complete

C. had been completed

D. have been completed

4. Some new oilfields ___ since 1976.

A. were opened up

B. has opened up

C. have been opened up

D. had been opened up 5. The silence of the library ___ only by the sound of pages being turned over. A. has been broken B. breaks C. broke D. was broken Summary 1.Guess the words by reading English difination. 2.To master the structure and usages of the present perfect passive voice. Homework Preview 课前学习导引 on page 13 on 优化设计