情态动词表推测.doc

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1、表推测的情态动词1.表推测的情态动词有：must,should,can,could,may,以及might。情态动词肯定式否定式疑问式must必须，必然，一定should按道理应该，理应can可能（理论上）不可能有可能吗could比can语气弱不可能比can弱may也许（现实上）可能不might比may弱比maynot语气弱其中must,should只能用于肯定句式，can用于肯定句式时表示理论上的可能性或偶尔的可能；而should则表示主观推测，“估计”“按道理应该”may,might不能用于疑问式。疑问式主要使用情态动词can,could我们可以用数学里的“大于”符号来表

2、示情态动词的推测语气：表肯定：must>should>could/may>might表否定：can’t>maynot>mightnot2.情态动词+havedone表推测一览表情态动词+havedone用法例句musthavedone一定已经做了Theymusthavefinishedtheirworkcan’thavedone不可能已经做了Theycan’thavefinishedtheirworkcouldhavedone可能已经做了本可以做但未做Wecouldhavewalkedhere;itwassonearmayhavedone也许已经做了Theymayhavefi

3、nishedtheirwork.mighthavedone也许已经做了或本来可以做但未做YoumighthaveusedmycomputerbecauseIdidn’tuseitshould/oughttohavedoneshouldn’t/oughtn’thavedone本来该做但未做本不该做但已经做了Youshouldhavefinishedyourworkyesterday.neednothavedone做了本不必要做的事Youneedn’thavecomesoearly.3.情态动词表推测分类练习（一）（肯定句式）1.--AreyoucomingtoTom’spart

4、y? --I’mnotsure.I________gototheconcertinstead A.must   B.would   C.should    D.might2.Peter______comewithustonight,butheisn’tverysure.A.must    B.may    C.can     D.will3.Hurryup,ourteacher_____forusattheschoolgate．A.mustbewaitingB.mustwaitC.mightwaitD.canbewaiting4.Youhavedonesomuchwo

5、rk,you__________rathertired.A.mustbefeeling  B.couldbefelt  C.maybefeeling  D.wouldfeel5.Shedoesn'tanswerthedoorbell,she_____beasleep．A.canB.mightC.musthaveD.should6.Naturally,afterItoldherwhattodo,mydaughter______goanddotheopposite!A.mayB.canC.mustD.should7.--IsthereaflighttoParisthisev

6、ening?--There_______be.I’llphonetheairportandfinditout.A.must     B.would     C.might      D.can8.---I’vetakensomeoneelse’sgreensweaterbymistake.---It______Harry’s.Healwayswearsgreen.A.hastobeB.willbeC.mustn’tD.couldbe9.Veryloudnoises__________makepeopleill,hurttheirearsorevendrivethemmad.A

7、.must     B.need    C.can     D.should10.Even experienced teachers ________ make mistakes.A.mustB.canC.shouldD.might11.Thetemperature______sometimesreach35℃inJuly.A.mustB.shallC.shouldD.can12.Toomuchlove________sometimesbebad.A.mustB.shallC.shouldD.can13