1、1,情态动词,2,3,4,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,5,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 l
2、uckily I _ buy some aspirin.A. can B. was able to C. could D. had to,B,He paid for a seat, when he _ have entered free.(2005山东)A. could B. was able to C. would D. had to,A,6,可以，允许(could更委婉) Excuse me, is this seat taken? Can I sit here? Yes, you can. 推测 can: 只用于否定和疑问句She cant be our teacher. could：肯
3、定、否定、疑问均可couldnt 比cant更不确定,7,You _ be tiredyouve only been working for an hour. (2004吉林)A. must not B. wont C. cant D. may not,C,8,may, might,可以，允许 (比can/could更正式)May I?推测cantcouldntmay notmight notcouldmaymight,9,区别：maybe， may be,These shoes _ Jims, I think. A. maybe B. may be C. may are D. may is,
4、B,maybe可能 may be可能是,10,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.,11,must, have to,must 必须：主动 have to不得不：被动接受 .,12,must not (mustnt) 禁止Must I do?Yes, you must.No, you dont have to.
5、/No, you neednt.,13,Must we finish the job before dark? No. You _ leave some parts of it tomorrow. A. must B. mustnt C. need D. may,D,14,May I smoke here?If you _, choose a seat in the smoking area.(2006山东)A. should B. could C. may D. must,D,15,need“需要，必须” dare“敢”,肯定句：need/dare to do (实意动词)否定句：needn
6、t/darent do (情态动词),16,You _ to the meeting this morning if you have something important to do.A. neednt to come B. dont need comeC. dont need coming D. neednt come,D,17,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,18,will,
7、 would,“愿意” will（现在）would （过去）would征求意见（语气委婉）,19,情态动词表示猜测 肯定：mustshouldcouldmaymight 否定：cantshouldntcouldntmay not might not,20,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.
8、 It _ Marys. He always wears green. (05广东) A. has to be B. will be C. mustnt be D. could be,D,21,情态动词+ have done (描述过去),过去一定,过去一定不,过去可能.,本来能.而实际没有,22,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。,23,过去应该.,过去不该.,过去没有必要做.,没有必要做并且没做.,24,You _ me. But since you have, Ill keep the secret from others
9、.A. neednt have told B. didnt need to tellC. mustnt have told D. couldnt have told,A,25,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,26,He _ have completed his work; otherwise, he wouldnt be enjoying himself by the seaside. A. should B. must C. mustnt D. cant,B,27,It is kind of you to do the washing-up, but you _ it.A. mustnt have done B. wouldnt have doneC. mightnt have done D. neednt have done,D,
