Learning about Language名师教学视频（文字实录）

Unit 3

Computers Learning about Language Grammar:The Present Perfect Passive Voice Teaching aims: 1. To know the structure of the present perfect passive voice. 2. To learn the usages of the present perfect passive voice. 3. To become interested in grammar learning and try to use them freely. Teaching important and difficult points: 1.

Have students master the usages of the present perfect passive voice. 2.

How to make the students use the present perfect passive voice correctly. Teaching methods: 1.

Task-based teaching and learning 2.

Inductive method Teaching Procedures: Step I Leading-in Step II The usages of Present Perfect Passive Voice 1.

概念(The concept)：

2.

句型(the sentence patterns)：

1）现在完成时被动语态肯定句句型：主语+ have/has been +done 2）现在完成时被动语态否定句句型：主语+ have/has +not+ been+done 3）现在完成时被动语态一般疑问句句型：Have/Has

+主语

+ been+ done ...? 4）现在完成时被动语态特殊疑问句句型：疑问词+

have/has + 主语+

been+done ...? 【即学即练】

Making up sentences using present perfect passive voice: 1)

The buildings, destroy, in the earthquake

2)

the shared bikes, use, not, in some big cities 3)

A new bridge, build, in our city

4)

many trees , plant, in the desert 3.

用法(The usages): 1)

现在完成时的被动语态同他的主动语态一样，强调过去的动作对现在造成的影响或后果already,yet, just, never, recently 等副词(常放在have或has之后)连用。

e.g.The work has already been completed. 2)

表示一个被动的动作或状态开始于过去,持续到现在,并可能持续下去,常与for

或since引导的时间状语连用,或用于How long...?句型中。

My car has been repaired for two days. The house has been painted since the family moved out. 3)

用在条件状语从句中，表示将来某时已经完成的动作. We will start as soon as the work has been finished. 【即学即练】

1.The important problem _________________ (discuss) for nearly two weeks. 2. How long has the machine ___________ (use)?

【注意】

1）常用于现在完成时的句子中，since then /since +从句,so far, by now, up to now,

recently, lately, already, yet, in/during the past/last + 段时间等。

2）只有及物动词才有被动语态,不及物动词(词组)没有被动语态。

例如: happen, take place, die, appear, disappear, fail, remain, lie, last, sit, stand, break out, come true, belong to等。

3）但许多不及物动词加介词或副词构成的动词短语，相当于及物

动词，也可

以有被动语态。但动词短语是一个不可分割的整体，变为被动语态时,不可丢

掉构成短语的介词或副词。

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。

My brother has had(不能用has bought) this bike for almost four years. How long has this book been bought?

(

) How long ago was this book bought?

(

) Step III Class exercises Ⅰ. 把下列主动语态转化为被动语态: 1. People play football all over the world. Football __________ all over the world by people. 2. Did they ask him some questions? _____________ any questions by them? 3. They warned Mary that the dog was dangerous. Mary ____________ that the dog was dangerous by them.

4. Who has broken the window? By whom _____ the window ________________? 5. You forgave him his rudeness, didn’t you?

He _________________ his rudeness by you, wasn’t he?

6. Should we do the work today or tomorrow? ________ the work __________ today or tomorrow by us?

II.改错

1. A personal computer has bought by us. 2. Many problems has been found with our new computer. 3. A PC has been builded the way we wanted. 4. Our computer just has been joined to the Internet. Ⅲ.翻译

1.

在过去的十年里，许多房子已经被建立起来了。

2.

这项工程已经实施多长时间了？

3.

问题已经被解决了。

4.

衣服上的墨迹还没有去掉。

Step IV Homework

Try to remember the grammar rules and do exercises 1, 2 and 3 on page 21.