课件30张PPT。主动语态与被动语态一、英语的谓语动词的语态We speak English.主语谓语宾语English is spoken by us.主语谓语宾语宾变主,主变宾,前加by,用宾格形式。
动变被,看清be, 结构分别be+ pp主动语态被动语态二、各种时态的被动语态形式:
be + 过去分词
?一般现在时: am / is / are done
?一般过去时: was / were done
?含有情态动词的被动语态
can / must / needn't be done
其他:
现在进行时: am / is / are being done
过去进行时: was / were being done
现在完成时: have / has been done
过去完成时: had been done
一般将来时: shall / will be done ;
be going to be done
三、主动语态变被动语态解题步骤1. 原句的宾语变为主语(找宾语 )。They make shoes in that factory. Shoesare2. 动词变为相应时态的被动形式 (注意be动词的形式)。 made3. 原句的主语 变为 by+ 宾格形式。其它照写。 by them in their factory.Shoes are made (by them) in that factory.
一般现在时的被动语态:
S(主语)+am/is /are +过去分词He rides the motorbike to his factory every day.The motorbike _____ _______ to his factory every day.is ridden2. They bought ten computers last term.
Ten computers were bought (by them) last term.
一般过去时:S+was/were +过去分词He bought his friend some fruits yesterday.His friend ___ ___ some fruits yesterday.wasbought3.Jim can take good care of Tina .Tina can be taken good care of by Jim.
情态动词:
主语+ can/may/must/should + be+过去分词He can carry the basket .The basket can ____ ______ by him.becarried1.People use knives for cutting things.
Knives ______ ______ for cutting things.
2. We found the ticket on the floor .练习: 把下列句子变为被动语态 The ticket ____ _____on the floor.3. He can mend the bike in two days.
The bike can ______ _______ in two days.areusedwasfoundbemended4.Did he finish the work yesterday?5.Must we finish our work today?
___ the work _______ by him yesterday?Must our work _____ ______by ______ today?Wasfinishedbefinishedus6. Do they often talk about this question?
__ this question often _____ about ___ ___?Is talked by them7. Doesn’t Bob clean the street every day?
_______ the street _________ by Bob every day?Isn’t cleaned1) see sb. doing sth.
被动语态: sb. be seen doing sth.I saw him playing football at that moment.He was seen playing football at that moment.四.几种值得注意的被动语态变化.1.带复合宾语的被动语态结构.He told us to get to school early.Our parents ask us to stay at home at night. We were told to get to school early by him.We are asked to stay at home at night. 2) tell sb. to do sth.3)make sb. do sth. sb. be made to do sth.Mr Green made Jim do his homework at home.Jim was made to do his homework by Mr Green at home.watch let have
hear see noticeWe hear him play in the next room.
He is heard ____ _____in the next room.
toplayBob sent Kate a letter last year.=Kate was sent a letter by Bob last year.=A letter was sent to Kate by Bob last year. bring give pass lend…to2. 含有双宾语句子的被动语态Mum made me a new dress.I was made a new dress by Mum.
=A new dress was made for me by Mum.make
buy
draw…for3. 动词短语的被动语态take care of → be taken care ofcut down → be cut downlaugh at → be laughed atlook after → be looked after
必须照看好孩子们。
The children must be taken good care .( X )
The children must be taken good care of .( √ )They said that he would come back soon.=It was said that he would come back soon.类似的还有:It is reported /
It is believed / hoped /supposed that ......We report 4. 注意一些惯用法5. 不用被动语态的几种情况:1)系动词(look, feel, smell, taste, keep, remain等)没有被动态和进行时态这鱼味道好。这条围巾摸上去很软。 The fish tastes good.The scarf feels soft.2)不及物动词没有被动语态。 如:belong to, happen, take place, last, come true, remain, succeed, fall, die, arrive等。 * Great changes have taken place in this city. * That bike doesn’t belong to Mike. 3)某些动词形式是主动,但含有被动的意思。这书很好卖。这种布很好洗。The book sells well.This kind of cloth washes very well.练习一1. A new factory ____ in our city last year .
A. built B. has built C. was built D. is building
2. All trees must _____ well when it is dry .
A. be watered B. are watered C. water D. be watering
3. This kind of machine ________ Japan .
A. is made by B. is made from C. is made in D. is made of
4. A new factory _____ in our city last year .
A. built B. has built C. was built D. is building
5.Do you like this kind of paper ? Yes , it _ very nice .
A. is felt B. felt C. is feeling D. feels
6.He was seen ____________ something from the shop .
A. steal B. to steal C. to be stolen D. stealed6. In warm weather fruit and meat _________ long .
A. can’t be kept B. don’t keep
C. is not kept D. aren’t keeping
7. The trees in our school _______every Friday afternoon .
A. are watered B. are watering C. have watered D. water
8. It ________ that she _______ very clever .
A. said , is B. was said , is C. is said , is D. said , is being
9. Great changes ________ place in China since 1978 .
A. have been taken B. have taken
C. has been taken D. took
10.You may go fishing if your work __________ .
A. is done B. will be done C. has done D. have done
11.The old men must ________ politely in our country .
A.spoke to B. be spoken C. speak to D. be spoken to
练习二、 用动词的正确时态和语态填空1. The building can _________(see)from every part of the city .
2.The bridge __________ (build)many years ago .
2. The students _____ often ________(tell)to take care of their desks and chairs .
3. Vegetables , eggs and fruits__(sell)in this shop .
4.These trees should _____________(water)after they _____ (plant).
5.The sports meeting _________(hold)last week .
6. Teenagers ____________(should allow) to wear their own clothes.
7.Jim didn't take part in the party, because he _________(not invite) yesterday.拓展练习一 翻译句子1.A new factory is being built in our city now.
2.A new factory was being built in our city at that time.
3.Some new factories will be built in our city this year.
4.She said that some new factories would be built soon in our city.
5.Some new factories have been built in the city since last year.
6.He said that some new factories had been built in the city. 拓展练习二 把下列句子变成被动语态 1. We found some presents in the box. 2. You must finish the article before Friday. 3. He often cleans his room at night. 4. Where did he translate the story? 5. We often hear Marry sing English songs ih her room.
拓展练习三 把下列句子变成主动语态
1.English is spoken in America. 2. All the words must be looked up in a dictionary.
3. A big animal was seen by Jim in the zoo .