Learning about Languageppt配套的板书设计及意图

Unit 3

computers Learning about

language 大理州巍山二中马艳娟

The Present Perfect Passive Voice

现在完成时的被动语态

Teaching aim:The Present Pefect passive voice Teaching difficulty : The Using of the present perfect passive voice Teaching precedures : Step 1 : Greetings and lead-in Step 2 :现在完成时态中的时间状语

现在完成时常与

already, always, often, ever, never, yet, not...yet, just等模糊的时间副词连用.

还可以和表示跟现在有关的或者一直延续到现在的时间状语连用。如: now, today, this month, this year, lately recently, these few days , in the past 10 years, in the last few years, so far , up to now, ever since等。

Step :3 课文内容复习：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. 1. 现在完成时的被动语态构成：

have/has (not)+ been + 过去分词

2.现在完成时的被动语态特点：

主语是行为动作的承受者

谓语动词表示动作已经完成

例如：

I have been told about it many times．

The bridge has just been built Change the following sentences into the

present perfect passive voice.(见课本P21 1.

A new personal computer has been bought

by my friend. 2.My computer has been repaired by the shop very quickly. 3.My computer has just been attacked by an unknown virus. 4.The problem has not been solved by us yet. 5.The computers have been given away to a local school by the company 6.A kind of intelligent robot has been

developed by the scientists Step 4 : Exercises

1. Both my brother work at the power station that ___ in my hometown.

A. has set up

B. has been set up

C. was set up

D. is set up 2. ---_____ the sports meet will be put off.

A. I’ve been told

B. I’ve told

C. I’m told

D. I told

3. All the preparation for the task ____, and we’re ready to start.

A. completed

B. complete

C. had been completed

D. have been done 4. ---- How long ____ at this job?

---- Since 1990.

A. were you employed

B. have you been employed

C. had you been employed

D. will you be employed 5. 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 6. Betty___ injured since last Saturday.

A. has been

B. was

C. is

D. has 7. --Did you move into the new house?

-- No. The rooms ___ yet.

A. were being painted

B. are painting

C. have not painted

D. have not been painted

8. Great changes___ in my hometown and a lot of factories ___.

A. have been taken place; are being set up

B. have taken place; have been set up

C. are taken place; had been set up

D. took place; will set up

改错

1. A personal computer has bought by us.

A personal computer has been bought by us 2. Many problems has been found with our new

computer. Many problems have been found with our new

computer. 3. The computer was used every day since we bought it. The computer has been used every day since

we bought it. 4. A lot of e-mails had written on the

computer in the past 5 years. A lot of e-mails have been written on the

computer in the past 5 years. 5. The house has been rebuilded the way we wanted. The house has been rebuilt the way we wanted

6. The accident has been happened here The accident has happened here

Complete the following sentences 1.

脏衣服都已经洗了。

The dirty clothes______________________.

2. 这项计划已经由专家改动过三次了。

The plan___________________by the

experts for three times. 3. 我的电脑很快就被修理好了。

My computer ________________very quickly. 4. 这个问题还没有解决。

The problem ____________________yet. Step 5. 副词的位置

1

just, 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, remain, become, appear等不及物动词或词组无被动语态。

Step 6 :现在完成时和一般过去时的区别

现在完成时强调过去的动作对现在有影响；一般过去时

只表示过去某个具体时间里发生的动作，与现在没有联系。

Jane left an hour ago . Jane has left now.(她现在已经不在这里了。

两者都可表示过去开始并延续了一段时间的动作，但现在完成时表示动作可能还要继续下去，而一般过去时则说明动作已经结束。He worked in the hospital for 7 years. (现在不在那个医院了) He has worked in that hospital for 7 years.（现在仍在那里工作）

时态的构成：

一般过去时：

用动词的过去式

(was/were/did)表示

现在完成时：

have/has +过去分词

被动语态的构成：

般过去时的被动语态

was/were +过去分词

现在完成时的被动语态

have/has + been + 过去分词

一般过去时态中的时间状语

般过去时常与具体的表示过去的时间状语

连用，如yesterday, last week, two days ago,

at 10:00, in 1980, in the 2020s等。

还跟once, just now, in the other day(不久前

的某一天)，

in the past等模糊时间状语连用。改错

1.I have finished reading this book three days ago finished reading this book three days ago I have finished reading this book since three

days ago. 2.I have lost my watch just now.

I lost my watch just nowI have just lost my watch 3.He walked to work in the past few years He has walked to work in the past few years

He walked to work in the past.

4.She has appeared at 3:00 this afternoon

She appeared at 3:00 this afternoon.