Learning about Language课堂实录【2】

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课题： Unit3 Computers Learning about Language 课型：新课（√

）

复习课（

）实践课（

）练习测试讲评课（

）

Teaching goals: 1.Learn some useful words and expressions. 2.Learn the grammar knowledge of the passive voice of the present perfect tense. Important points: The structure of the passive voice of the present perfect tense Difficult points:

How to use the passive voice of the present perfect tense correctly Teaching methods :Discussing, Reading, Cooperative learning Teaching process: Step 1 Revision Revise the new words in Unit 3. Step 2 Discovering useful words and expressions 1.

Turn to Page20. Let students finish Part 1. 2.

Check the answers with the whole class. Step 3 Discovering useful structure 现在完成时的被动语态的定义: 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。

The structure of the present perfect passive voice is: have / has ＋ been＋done 现在完成时的被动语态的构成形式：

1. 现在完成时被动语态肯定句

主语+has/ have been +done+... Her motorbike has been stolen. 她的摩托车被盗了。

2. 现在完成时被动语态否定句

主语+has/ have +not+ been+ done+... The task has not been finished yet. 任务尚未完成。

3.现在完成时被动语态的一般疑问句需将have / has提到主语的前面。

Has his bike been repaired? 他的自行车修好了吗？

4.现在完成时被动语态的特殊疑问句为：疑问词 + have / has + been + done Who has been invited? 谁受到了邀请？

Step 4

【注意】

1.副词的位置often, usually, always, never, hardly, seldom等副词置于have/has和been中间。

2.并不是所有动词都有被动语态 happen, take place, break out, belong to, cost, last等不及物动词或词组无被动语态。

3.动词短语是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。

4. 一些特殊动词, 如borrow, finish, begin, buy, start, return, marry, open, join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则需改换动词或时态。

主动语态变被动语态的方法: (1) 把主动语态的宾语变为被动语态的主语。

(2) 把谓语变成被动结构 (be＋过去分词)

(根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。

(3) 把主动语态中的主语放在介词by之后作宾语, 将主格改为宾格。

(4) 双宾语动词变被动语态可将其中的一个宾语变为主语，

另一个保留不动。

(5) 带复合宾语的动词变被动语态时, 只能将宾语变为主语, 原来的宾补保留不动，主语补足语。

Step 5 Exercises 单选

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

改称

D. had been opened up 5. — ______ the sports meet might be put off.

— Yes, it all depends on the weather. A. I’ve been told

B. I’ve told

C. I’m told

D. I told 用动词正确形式填空。

1. First as a PC and then as a laptop, I _______________ (use) in offices and homes since the 1970s. 2. Over time my memory ______________ (develop) so much that, like an elephant, I never forget anything I __________________(told). 3. Since the 1970s many new applications __________________ (find) for me. 4. I have also ___________(put) into robots and used to make mobile phones as well as _________(help) with medical operations. 5. I ____________________(put) into space rockets and sent to explore the Moon and Mars. Step 6 Homework Try to remember the grammar rules and do exercises 1, 2 and 3 on page 21.