初中英语被动语态复习ppt课件.ppt

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1、被动语态,Passive voice,被动语态基本用法当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。,1.Now English _ by more and more people all over the word.A.speaks B.is spoken C.was spoken,一般现在时的被动语态：主语+am/is/are+PP,2.The lost boy _ at the street corner last night.A.was found B.is found C.

2、was looked for,一般过去时的被动语态：主语+was/were+PP,3.More man-made satellites _ in the future.A.will send up B.will be sent up C.are sent up,一般将来时的被动语态：主语+will+be+PPbe going to+be+PP,4.Three bridges _ since last year.A.have built B.were built C.have been built,现在完成时的被动语态：主语+have/has+been+PP,5.Flowers _ every

3、day.A.has been watered B.should be watered C.should water,含有情态动词的被动语态：情态动词+be+PP,be+Vp.p(动词的过去分词）1)be 动词可以随时态人称的变化而变化am/is/are+V(过去分词）was/were+V(过去分词）will be+V(过去分词）情态动词+be+V(过去分词）,What does my son do every day?,The homework is done by him every day.,He does the homework every day.,The dishes are wa

4、shed by her every evening.,What does my mother do every evening?,She washes the dishes every evening.,b,1.Newly-born babies _ in hospital.A.take good care of B.are taken good care of C.are taken good care2.This English song _ by the girls after class.A.often sang B.is often sang C.is often sung,C,1.

5、规则动词的过去分词：,1)一般情况在动词原形后加-ed,watch-watched,2)以不发音e结尾的加-d,practice-practiced,3)以辅音加y结尾的，去y变i加-ed,study-studied,4)以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed,stop-stopped,2.不规则动词的过去分词：,am,is,are,been,have,has,had,do,done,write,written,go,gone,He plants trees in spring.,主,谓,宾(受动者),Trees,are planted,by,him,改为被动语态

6、,in spring.,主动语态变被动语态口诀：宾语提前主语变，原主变宾by后见，时态人称be关键。,Tom will clean the room tomorrow.,主,谓,宾(受动者),The room,will be cleaned,by,Tom,tomorrow.,His brother washes bowls every day.,主,谓,宾(受动者),Bowls,are washed,by,his brother,every day.,1.They make shoes in that factory.主语+及物动词+宾语,Shoes are made(by them)in t

7、hat factory.一般现在时：S(主语）+am/is/are+过去分词,变为被动语态,2.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,3Amy can take good care of Gina,Gina can be taken good care of by Amy.情态动词：S+can/may/must/should+be+过去分词,各种时态的被动语态构成 1）一般现在时：You are invited to do thi

8、s.2）一般过去时：The story was told by her.3）一般将来时：The problem will be discussed tomorrow.,看一看 想一想,4)情态动词：The rubbish can be put into the dustbin over there.,何时使用被动语态呢？一、行为主体不明确，不必说出或者无法说出动作的执行者时。例如：Football is played all over the world 二、不易找到或根本就不可能找到动作的执行者时。例如：My bike was stolen我的自行车被盗了。,三、汉语中含有“据说”、“据悉”

9、、“有人说”、“大家说”等时。例如：It is said that one day he climbed to the top of a house and It was reported that her mother died of SARS.众所周知 It is well known that It is known that China is famous for the Great Wall.据推测说 It is supposed that It is supposed that he may pass the examination.,四、汉语中含有“被”、“由”等词时。例如：Ti

10、na is asked to come by PaulTina是被Paul叫来的。五、某些句子习惯上用被动语态。例如：He was born in October，1989,1.People use knives for cutting things.Knives _ _ for cutting things.2.The students clean the windows of their classroom twice a month.The windows of their classroom_ _ twice a month.,EXERCISES,are used,are,cleane

11、d,(变被动语态）,3.I found the ticket on the floor._ _ _ _ on the floor.4.I told her to return the book in time.She _ _ to return the book in time.,The ticket was found,was told,5.His doctor made him have only two meals a day.He _ _ _ _ only two meals a day.6.Now people can use computers to help them.Now c

12、omputers _ _ _ to help them.,was made to have,can be,used,7.Did you plant many trees at this time last year?_ _ _ _ at this time last time?8.Must we finish our work today?_ our work_ _ today?,Were many trees planted,Must be finished,9.The foreign friends gave us some wonderful stamps.1)_ _ _ some wo

13、nderful stamps.2)Some wonderful stamps _ _ _ _.,we were given,were,given to us,10.The teacher asked Tom to turn on the computer.Tom _ _ to turn on the computer.11.In this factory women do most of the work.Most of the work _ _ by women in this factory.,was asked,is done,12.He can repair the bike.The

14、bike _ _ _.13.You must take this medicine three times a day.This medicine _ _ _ three times a day.,can be repaired,must be,taken,14.The students study German in this school.German _ _ by the students in this school.15.Do they often talk about this question?_ this question often _ about _ _?,is studi

15、ed,Is,talked,by them,1)Teenagers should _(allow)to go out at night.2)The telephone _(invent)by Bell.3)English _(speak)in China.4)The car _(make)in China.5)The room must _(clean)every day.,be allowed,was invented,is spoken,is made,be cleaned,()The flowers _ every day,or theyll die.A must water B can

16、be wateredC should water D must be watered()Many computers will _ to our school.A be bring B be brought C bring,1.Bikes are made of metal.2.My shirt is bought by my mother.3.The bridge was built in 1951.4.The work will be finished tomorrow.5.Teenagers should be allowed to smoke6.The flowers must be

17、watered every day.,6We have made twenty more keys,Twenty more keys have been made by us.现在完成时：S+have/has+been+过去分词,4.They will finish the work in ten days.,The work will be finished(by them)in ten days.一般将来时：S+will+be+过去分词,各种时态的被动语态构成,一般现在时：一般过去时：情态动词：一般将来时：现在进行时：现在完成时：过去进行时：,S+am/is/are+P.PS+was/were+P.P.S+can/may/must/should+be+P.P.S+will+be+P.P.S+am/is/are+being+P.P.S+have/has+been+P.P.S+was/were+being+P.P.,