课件29张PPT。 Unit 3 Computers Period 4 Grammar1.His house _______________(paint) next week.
2. After that the Olympics______________ (hold) in our country.
3.This work ______________(do) at once.
4. He ______________(send) there by us tomorrow.
5. The carrots ______________(eat) by the rabbits.请用括号内单词的正确形式填空。 一般将来时的
被动语态
will be paintedwill be heldwill be donewill be sentwill be eatenReview the grammar we have learned last unit.be donehad donehave/has done Read the following sentences ,
what characteristics(特征)do they have in common?1. Till now, three films have been shown in that small village this month.
2. Two cars have been repaired for three hours.
3. Tom’s novel has been published.
4. The plan has been studied by the experts for four times.
5. The house has been cleaned. Lead-in 1. Till now, have been shown in that small village this month.
2. have been repaired for three hours.
3. Tom’s has been published.
4. The has been studied by the experts for four times.
5. The has been cleaned.three filmsTwo carsnovel plan house 2.说话时已经完成的动作或出现的结果。 1.主语是行为动作的承受者。3.动作或状态始于过去,持续到现在,并可能持续下去。Present Perfect Passive Voice 现在完成时的被动语态定义:
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……”。Structure
1.构成:
现在完成时 被动语态
have/has done + be done
现在完成时的被动语态结构:
have/has been done …..已经被……have/has 和been
这两个助动词
缺一不可1.“I MISS YOU” ____
__________ (write) on the notebook. has been written2.The apple _____________
(eat) by Sunny. has been eatenⅠ. Fill in the blanks using present perfect passive voice.Exercises3. Many flowers______________ (put on)the bike.have been put on4. The camera______________(use) to take photos.has been used5. Lots of beautiful flowers and trees __________________(plant) have been planted.
Ⅱ. Make up sentences using present perfect passive voice.Group 1
the buildings, destroy,
earthquake The buildings have been destroyed in the earthquake.Group 2
machine
replacecomputerThe machine has been replaced by the computer .Group 3
new bridge, build ,
in our city A new bridge has been built in our city Group 4
Apple Watch,
inventApple Watch has been invented recently.Group 5,
robot,
developThe robot has already been developed.Ⅲ.Change the sentences into the present perfect passive voice1.Workers have built the house since two years ago.The househas been builtby workers since two years ago.2. We have received many letters since last week.Many letters have been received by us since last week.2. 现在完成时被动语态的各种句式:have/has+been+donehave/has+not + been+done Have/Has+主语+been+done……? 疑问词+have/has+主语+been + done…?请判断下列句子属于哪种句式。
1. Tom’s novel has not been published.
2. The experiment has been done successfully.
3. Who has been invited?
4. Has his bike been repaired?3.使用现在完成时的被动语态要注意以下几点:1) have/has和been,两个助动词缺一不可。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。如: happen, take place, die, appear, disappear, fail, remain, lie, last, sit , stand, break out, come true, belong to等如:just,often, usually, always, never, hardly, seldom等副词置于have/has和been中间。副词的位置4 ) 短语动词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。如: The child has been well looked after.
The book has been referred to .
5) 非延续性动词如: borrow,finish,begin,start,buy,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如 for four days, how long 等连用,若要表达相应的意思,则要改换动词或时态。
如:这本书买了多久了?
误:How long has this book been bought?
正:How long ago was this book bought?
Ⅰ.Correct the following sentences.1. A personal computer has bought by us.
2. What has been happened to you? A personal computer has been bought by us.What has happened to you?
3. Our computer just has been joined to the internet.
Our computer has just been joined to the internet.Consolidation4. The child has been taken good care by Grandma Wang all these years.The child has been taken good care of by Grandma Wang all these years.
5. How long has the book been borrowed ?
How long has the book been kept?1. ---We want to sit at the table near the window.
----I’m sorry, but it ______already.
A. has taken
B. took
C. has been taken
D. was taken Ⅱ. Choose the best answers.2. ---- 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 employed3.?More patients(病人)_________ in hospital this year than last year.
A. treated
B. have treated
C. had been treated
D. have been treated
4.Paper money_________ for over a thousand years. A . used B. has been used C. has used D. is using
5.?—The window is dirty.
----I know. It __________for weeks.
A. hasn’t cleaned B. didn’t clean
C. wasn’t cleaned D. hasn’t been cleaned6.?--___that the sports meeting will be put off.
A. I’ve been told B. I’ve told
C. I’m told D. I told
1.Your computer ____________________.
你的电脑已经修好了。
2. The desks ________________________.
这些桌子还没有擦干净。
3. ______________her work __________________?
她的工作完成有多久了?
4.______ the cars _________________? 这些车修好了嘛?
No, they aren’t. 不,还没有。
have not been cleaned Ⅲ.Test yourself! has been repairedHow long has been finishedHave been repaired1.由于大雪,高速公路已经被封闭 。
The freeway _______________ because of the heavy snow.
2.对不起,先生,这次展览的门票已经全部卖完 了。
Sorry,sir,all the tickets for the exhibition ________________ .
3.这座城市明年将建多少座大楼?
How many high buildings ________________in this city next year?
4.为了多种一些谷物,很多树被砍掉 了。
Large numbers of trees ___________________ to grow more grain.
5.我喜欢这部科幻电影,它已经在电视上播 了三次了。
I like this science fiction film and it ________________ ___three
times on TV.
has been closedhave been sold outwill be builthave been cut downhas been broadcastⅣ. Finish the following sentences.
1.More than 5,000 used bikes__________________ (collect) since the two brothers set up the organization.
2.Since the cause of this disease________________ (discover),now we need to develop the medicine to treat it.
3.Her novel is very popular among people of all ages;so far it__________________(translate) into 25 languages.
Ⅴ.用括号内动词或词组的适当形式填空has been discoveredhave been collectedhas been translated4.Over the past ten years,this town __________ (hit) twice by earthquakes.
5.—Will the lecture be held at 4 o’clock this afternoon?
—No. It__________________(put off)till tomorrow afternoon.
has been hit has been put off