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单击此处编辑母版标题样式,*,被动语态和动词,不定式的被动语态,Unit 2 Grammar,Discovering useful structures,Go over the passive voice,My hamburger was,eaten,by the,dog.,A new hospital will be,built,in our,city.,被动语态由,be+,过去分词构成，,be,随时态的变化而变化。,一般现在时：,am/is/are + P.P,The classroom is cleaned .,一、被动语态的构成,一般过去时：,was/were + p.p,These computers,were made,in our own country.,一般将来时：,will/shall be + p.p,Shall,we,be asked,to attend the opening ceremony?,过去将来时：,would be + p.p,The news,would be sent,to the,soldiers mother as soon as it arrived.,现在进行时：,am/is/are being +p.p,Trees,are being planted,over there by them.,过去进行时：,was/were being + p.p,The feast,was being prepared,when the birds arrived in the sky.,现在完成时：,have/has been +p.p,Swift progress,has also been made,in culture and education.,过去完成时：,had been + p.p,The huge bridge,had been damaged,before the World War II.,将来完成时：,will/shall have been +p.p,The book,will have been published,by the end of next month.,含有情态动词的动词变成被动语态：情态动词 +,be +,过去分词,This problem,can be solved,.,这问题可解决。,Whats done,cannot be undone,.,覆水难收。,二、动词不定式的被动语态,一般时,to be done,完成时,to have been done,I perfer,to be left,at home rather than go shopping.,The river is reported,to have been polluted,.,1. The dishes need,2,. The mail needs,right away.,wash,send,to be washed,.,to be sent,三、不定式的主动形式表示被动,1.,在,there be,结构中。,There is a lot of homework to do.,(,也可用,to be done),There is no time to lose (to be lost).,2.,在,“,n.,pron + be + adj. + to do,”,结构中。常用的形容词有,easy,，,difficult,，,hard,，,impossible,，,nice,，,pleasant,，,light,，,heavy,，,interesting,，,important,，,expensive,，,cheap,，,fit,，,dangerous,等。,He is hard to convince.,3.,在,“,too,to do; enough,to,”,结构中。,如：,The problem is too difficult to work out (to be worked out).,The house is big enough to live in,.,4.,在,“,with + n. + to do,”,结构中。,With nothing to do, he lay in bed.With so many exercises to do, I can,t go to the cinema.,5.,一些作表语用的不定式的主动形式。,常见的这类动词有,let (,出租,), rent,，,hire, blame,等,。,The house is to let.I felt I was to blame.,用被动语态改换下列各句。,1.,My father will repair my bike for me.,My bike,will be repaired,by my father for me.,2.,I have found my wallet.,My wallet,has been found,.,3.,She told me to wait here for her.,I,was told,to wait here for her.,4.,The police will surely arrest the,murderer.,The murderer,will,surely,be arrested,by the police.,5.,They invited Mr. Green to make a speech.,Mr. Green,was invited,to make a speech.,6.,The students clean their classroom every,day.,Their classroom,is cleaned,by the,students every day.,7.,You mustnt take those books out of,the reading-room.,Those books,mustnt be taken,out of the reading-room.,8.,I didnt tell you the girl could do the job.,You,werent told,by me that the girl could do the job.,9. Do people speak English in your country?,Is,English,spoken,in your country?,1,0. He gave me a present.,I,was given,a present.,A present,was given,to me.,1,1. Mother often tells her children a story,at bed time.,Children,are,often,told,a story at bed time by mother.,A story,is,often,told,by mother to children at bed time.,1. Knives _ (use) for cutting things.,2. The building _ (build) in 1987.,3. Nuclear energy _ (use) to,produce electricity by us.,4. Several big modern power plants _,_ (build) in our city next year.,5. Your mistakes _,(correct) right now.,6. My bike _ (repair) by,Tom now.,用被动语态填空。,are used,was built,has been used,will,be built,should be corrected,is being repaired,Thank you!,
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