情态动词学习六要素情态动词学习六要素一、注意情态动词的推测用法一、注意情态动词的推测用法推测性情态动词共有三个，其用法见表推测性情态动词共有三个，其用法见表情态动词含义适用句型May/might可能，或许肯定句Must一定，必须肯定句Can/could可能，或许否定句，疑问句--AreyoucomingtoJeff’sparty?--AreyoucomingtoJeff’sparty?--I’mnotsure.I____gototheconcertinstead.--I’mnotsure.I____gototheconcertinstead.A.mustA.mustB.wouldB.wouldC.shouldC.shouldD.mightD.mightD--_____thenewsbetrue?--_____thenewsbetrue?—No,it_____betrue.—No,it_____betrue.A.Can,can’tA.Can,can’tB.May,can’tB.May,can’tC.May,maynotD.Must,mustn’tC.May,maynotD.Must,mustn’tA二、了解情态动词的完成式用法二、了解情态动词的完成式用法（一）（一）should/oughttohavedoneshould/oughttohavedone本来应做而未做，表达遗憾感情色彩本来应做而未做，表达遗憾感情色彩ItoldSallyhowtogetthere,butperhapsI____forher.(NMET94)A.hadtowriteitoutB.musthavewrittenitoutC.shouldhavewrittenitoutD.oughttowriteitoutCIwasreallyanxiousaboutyou,Iwasreallyanxiousaboutyou,you_____homewithoutaword.you_____homewithoutaword.(NMET2001)(NMET2001)A.mustn’tleaveA.mustn’tleaveB.shouldn’thaveleftB.shouldn’thaveleftC.couldn’thaveleftC.couldn’thaveleftD.needn’tleaveD.needn’tleaveB（二）（二）may/mighthavedonemay/mighthavedone可能已做可能已做musthavedonemusthavedone一定已做一定已做can’thavedonecan’thavedone不可能做不可能做--Whereismypen?--Whereismypen?--I_____it.(NMET88)--I_____it.(NMET88)A.mightloseB.wouldn’thavelostA.mightloseB.wouldn’thavelostC.shouldhavelostD.musthaveC.shouldhavelostD.musthavelostlostDThelightinhisroomisstillon,Thelightinhisroomisstillon,sohe_____tobed.sohe_____tobed.A.mustn’thavegoneA.mustn’thavegoneB.musthavegoneB.musthavegoneC.shouldn’thavegoneC.shouldn’thavegoneD.can’thavegoneD.can’thavegoneD（三）（三）couldhavedonecouldhavedone指本来能做指本来能做而实际未做，表达遗憾的感情色彩而实际未做，表达遗憾的感情色彩YoucouldatleasthavesentYoucouldatleasthavesentfivecards.fivecards.你至少可以寄你至少可以寄55张明信片的。张明信片的。四、熟悉情态动词委婉用法：四、熟悉情态动词委婉用法：could,would,mightcould,would,might等情态动词均有等情态动词均有委婉用法，它们不是过去式而是表示语气委委婉用法，它们不是过去式而是表示语气委婉、客气、礼貌，常用与疑问句，并多用于婉、客气、礼貌，常用与疑问句，并多用于习惯表达，如习惯表达，如wouldyouplease,wouldwouldyouplease,wouldyoumind,wouldyouliketoyoumind,wouldyouliketo等，等，mightmight还可以用于肯定句表示推测，表示可能性小，还可以用于肯定句表示推测，表示可能性小，mightmight和和couldcould表示征求对方意见时，回表示征求对方意见时，回答必须还成答必须还成may,can.may,can.--CouldIborrowyourdictionary?--CouldIborrowyourdictionary?——Yes,ofcourseyou____.Yes,ofcourseyou____.A.mightA.mightB.willB.willC.canC.canD.shouldD.shouldC__youmindmysmokinghere?__youmindmysmokinghere?A.ShouldA.ShouldBCouldBCouldC.MightC.MightD.WouldD.WouldD五、弄清情态动词的异化现象五、弄清情态动词的异化现象有些情态用于疑问句进行回答时，出有些情态用于疑问句进行回答时，出现了异化现象，此时回答在某现了异化现象，此时回答在某个角度不能继续使用该情态动词，个角度不能继续使用该情态动词，而改用别的动词。而改用别的动词。--MustIstartatonce?--MustIstartatonce?—No,you____.—No,you____.A.needn’tA.needn’tB.mustn’tB.mustn’tC.can’tC.can’tD.won’tD.won’tA--NeedIhandinmy--NeedIhandinmyexercisebookatonce?exercisebookatonce?—Yes,you_____.—Yes,you_____.A.m...
