英语语法情态动词(新东方杨文哲).ppt

*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,情态动词,1,2,能力,请求/允许,必要性,推测,can,could,be able to,may,might,must,have to,shall,should,ought to,3,can,could,能力，能够(can现在could过去),Can I go to the bathroom?,I dont know.You must know if you can.,The fire spread through the hotel very,quickly but everyone _ get out.(1997全国),A.had to B.would,C.could D.was able to,D,4,区别,was/were able:付出努力并成功做到,could：有潜能，但并未做到,The chemist was open,so luckily I _ buy,some aspirin.,A.can B.was able to,C.couldD.had to,B,He paid for a seat,when he _ have entered free.(2005山东),A.couldB.was able to,C.wouldD.had to,A,5,may,might,可以，允许(比can/could更正式),May I?,推测,cantcouldntmay notmight not,couldmaymight,8,区别：maybe，may be,These shoes _ Jims,I think.,A.maybe B.may be,C.may are D.may is,B,maybe可能,may be可能是,9,should，ought to,should“应该”（义务、责任或劝告）,Books and friends should be few but good.,ought to语气更强,Everybody ought to do at least two things,each day that he hates to do.,10,must,have to,must,必须：主动,have to,不得不：被动接受,.,11,must not(mustnt)禁止,Must I do?,Yes,you must.,No,you dont have to./No,you neednt.,12,Must we finish the job before dark?No.You _ leave some parts of it tomorrow.A.must B.mustnt C.need D.may,D,13,May I smoke here?,If you _,choose a seat in the smoking area.(2006山东),A.shouldB.could,C.may D.must,D,14,need“需要，必须”dare“敢”,肯定句：need/dare to do(实意动词),否定句：neednt/darent do(情态动词),15,You _ to the meeting this morning if,you have something important to do.,A.neednt to come,B.dont need come,C.dont need coming,D.neednt come,D,16,I have to do this experiment again,but,you _ with me.,A.need to not go B.do not need go,C.need not go D.need go not,C,17,will,would,“愿意”will（现在）,would（过去）,would征求意见（语气委婉）,18,情态动词表示猜测,肯定：mustshouldcouldmaymight,否定：cantshouldntcouldntmay not,might not,19,Johnny,you _ play with the knife,you,_ hurt yourself.,A.wont,cant B.mustnt,may,C.shouldnt,must D.cant,shouldnt,B,Ive taken someone elses green sweater by,mistake.,It _ Marys.He always wears green.(05广东),A.has to beB.will be,C.mustnt beD.could be,D,20,情态动词+have done(描述过去),猜测,must have done,cant have done,could have done,may have done,might have done,could have done,过去一定,过去一定不,过去可能.,本来能.而实际没有,21,She could have been his wife.,她以前可能是他的妻子。,她本应该是他的妻子。,22,建议,should have done,should not have done,need not have done,didnt need to do,过去应该.,过去不该.,过去没有必要做.,没有必要做并且没做.,23,You _ me.But since you have,Ill,keep the secret from others.,A.neednt have told,B.didnt need to tell,C.mustnt have told,D.couldnt have told,A,24,Mr.White _ at 8:30 for the meeting,but he didnt show up.,A.should have arrived,B.should arrive,C.should have had arrive,D.should be arriving,A,25,He _ have completed his work;otherwise,he wouldnt be enjoying himself by the seaside.,A.should B.must,C.mustnt D.cant,B,26,It is kind of you to do the washing-up,but,you _ it.,A.mustnt have done,B.wouldnt have done,C.mightnt have done,D.neednt have done,D,27,