情态动词.doc新.doc

情态动词+ have done 1)must have done 对过去已经发生的事的肯定推测.(只用于肯定句)He must have gone to bed, for the light was out.2)can/could have done 对过去行为的怀疑和不肯定的推测.(常用于否定句和疑问句) 在否定句意为“不可能, 不会是”Mick cant/couldnt have found his car, for he came to work by bus this morning.(不可能/不会找到车)注意: could+ have done 具有两层意思 表示对过去发生的事的揣测, 可与can互换.表示对过去能做的事而没有做, 不可与can替换.意为:“本来可以做/能做”-I stayed at a hotel while in New York.-Oh. Did you? You could have stayed with Barbara有时含有责备或遗憾的意思.You could have done it better.You could have come earlier3)may/might have done 表示推测,可能性更小, 主要用于肯定句.译为: “或许”He may/might have gone to the library.他或许已经去图书馆了.might +have done 有时含有委婉的责备或庆幸等感情. 这时不能用mayYou might have told me earlier.你本可以早点把消息告诉我的.4)should have done 表示本应该做但却未做, 含有“后悔,遗憾,责备,批评”之意.You should have been more careful.你本应该更细心些.You shouldnt have told him about it. 你本不该告诉他这事.5)neednt have done 表示“本来用不着, 本不必” 之意.You neednt have come. I have finished the work. 高考题选1.-I stayed at a hotel while in New York. -Oh, did you? You_with Barbara. A.could have stayed B.could stay C.would stay D.must have stayed2.I didnt see her in the meeting room this morning. She_at the meeting A.mustnt have spoken B.shouldnt have spoken C.neednt have spoken D.couldnt have spoken3.He_you more help, even though he was busy. A.might have given B.must have given C.can have given D.may give4.-I saw our teacher in the office just now. -You_her, she is still abroad. A.cant have seen B.mustnt have seen C.neednt have seen D.shouldnt have seen5.Kate is already two hours late. What_to her? A.can have happened B.may have happened C.should have happened D.must have happened6.We_last night, but we went to the concert instead. A.must have studied B.might study C.should have studied D.would study7.There was plenty of time. She_. A.mustnt have hurried B.couldnt have hurried C.mustnt hurry D.neednt have hurried8.Sorry, Im late. I_have turned off the alarm clock and gone back to sleep again. A.might B.should C.can D.will9.Janny_have kept her word. I wonder why she changed her mind. A.must B.should C.need D.would10.Tom ought not to_me your secret, but he meant no harm. A.have told B.tell C.be telling D.having told11.It is strange that he_such a silly thing. A.must have done B.may have done C.could have done D.should have done12.-Jack fell off a ladder yesterday, but he is all right. -Hes lucky. He_himself badly. A.could wound B.would have wounded C.could hurt D.would wound1Yeah,it is true. I_(不会相信) it possible,if I hadnt seen it happen.(believe).2 _(可能是)the wrong directions from the control room that caused the air crash?3 The earthquake _(造成的损失会小些) if the houses had been of stronger construction.(cause)4 He _(一定熬夜了) yesterday,otherwise,he would not be so sleepy now.(stay)5Its said that they have swum to the island from the continent,but they _(不可能做到)because the ocean in between is too wide.(do)6I have lost one of my gloves.I_(一定把它掉在)somewhere in the library this morning.(drop)7Although someone didnt believe in him,I insisted that _(他会信守诺言)this time (word)8She _(不可能去了)America -I saw her come out of her office just now.(go)9He_(肯定不可能过)the river,because the bridge was broken and there was no boat .(cross)10The fishermen_(肯定被警告过) the awful weather,but they didnt listen to it.(warn)情态动词完成时答案1-5 ADAAA6-10CDABA 11-12 DB1 wouldnt have believed2 can/could it have been Could it be 3 would have caused less