Learning about Language第二课时教案

人教版高中英语必修2 Unit 3

Computers Learning about Language ---the present perfect passive voice.教学设计

重庆市綦江实验中学校

杨琴

Learning 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. Leading-in Observe the following sentences, and find something in common. (1)Over time I have been changed quite a lot.

(2)That book has been translated into at least 12 foreign languages. The present perfect passive voice

has/have

been

done Ⅰ.概念(The concept)：

1. 说话时已经完成

的动作或出现的结果。

2. 主语是行为动作的承受者。

【注意】

1. 过去分词前有两个助动词have/has和been。

2. 必须表示被动。

I ____________(tell) about it many times．

The bridge ________________(build)．

Ⅱ.句型(the sentence patterns)：

1. 现在完成时被动语态肯定句句型：

These trees ________________(water) lately.

2. 现在完成时被动语态否定句句型：

The task _____________________(finish) yet.

Many workers_____________________（train) in 3. 现在完成时被动语态一般疑问句句型：

Has a new computer been bought ?

Have they been sent abroad to study English? 4. 现在完成时被动语态特殊疑问句句型：

Where has the car been repaired? Who have been helped by the new computer?

How many buildings have been built in this school? 3. 现在完成时被动语态一般疑问句句型：

Has a new computer been bought ?

Have they been sent abroad to study English? 4. 现在完成时被动语态特殊疑问句句型：

Where has the car been repaired? Who have been helped by the new computer?

How many buildings have been built in this school? Ⅲ. 用法(The usages): 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。

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。

3. 用在条件状语从句中，表示将来某时已经完成的动作. 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。

注意：

1. 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。

What _____________(happen) to your brother? 2. 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。

The child ______________ (take) good care of by his

grandma all these years. A notice ___________(put) up on the wall. 3. 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?

(

)