高一英语高一英语下情态动词

Grammar情态动词更多资源xiti123.taobao.com非推测性情态动词shall,will,must,mustn’t,should,would的用法情态动词could,should/oughtto,may/might,needn’t+havedone表示假设的用法情态动词must,can/could,may/might,should/oughtto表猜测的用法情态动词的一些惯用法表示推测——情态动词的重要用法.肯定的推测可能的推测否定的推测疑问的推测must对将来对现在对过去情态动词may,mightcan’t,couldn’tcan,could+V.+V.+havedone常见mustbe+bedoing+V.+V.+havedone+bedoing可以用not表示“可能不”+V.+V.+havedone+bedoing+V.+V.+havedone+bedoing•Must+havedone表示对过去已经发生的行为进行推测，意为“想必/准是/一定作了某事”。1.Wemusthavelearned2,000wordsbytheendoflastterm.到上学期为止我们一定学了有两千个单词。2.HemusthavegonetoBeijing.他一定已经去北京了。•can/could+havedone表示对过去的行为的怀疑和不肯定，通常用在否定句和疑问句中。1.Cantheyhavewonthebasketballmatch?他们可能赢了篮球赛吗？2.Itcouldn’thavebeenMr.Green.HehasgonetoNewYork.那不可能是格林先生的，他已经去北京了。could(不用can)+havedone,在肯定句中表示“本来能够…而没能…”，具有婉转的批评和责备之意。Youcouldhavetoldmeearlier.你本该早点告诉我的。should/oughtto+havedone用于肯定句时，表示“本该做某事而实际上没做”，用于否定句时，则表示“不该做的事反而做了”。1.Youshouldhavetoldhimaweekago.你本来应该在一周前告诉他的。might（不用may）+havedone表示“本来可能…”，但实际上没有发生的事。另外，还可表示“本来应该或可以做某事”之意，含有轻微的责备语气。1.Youmightnothavetoldher.你本可以不告诉他的。（事实上你告诉他了）2.Youmighthavecomeearlier.你本可以早点来的。（但没有这样）needn’t+havedone表示做了本来不必去做的事。1.Sheneedn’thavegonetothestationyesterday.昨天她本不必到火车站去的.（昨天她去了）2.Youneedn’thaveboughtit.你本可不必买它的。（你买了）巩固练习1.Oh,I’mnotfeelingwellinthestomach.I____somuchfriedchickenjustnow.A.shouldn’teatB.shouldn’thaveeatenC.mustn’teatD.mustn’thaveeaten2.---Whyhasn’tJanearrivedyet?---She____againinthemorning?A.shouldn’thaveoversleptB.mayhaveturnedoffthealarmclockC.musthavenoonetocallherD.shouldhavesomeonetowakeherup3.---Didyougotothemoviethedaybeforeyesterday?----No.We___,butwedecidednotto.A.shouldhavegoneB.couldgoC.shouldgoD.couldhavegoneBBA4.Asitturnedouttobeasmallhouseparty,we____soformally.A.needn’tdressB.didn’thavetodressupC.MightnothavedressedupD.needn’thavedressedup5.I’mrathersurprisedyouhaven’treportedhimtoyourteacher.Inmyopinion,you___thisassoonasyoufoundouthewascheating.A.musthavedoneB.mighthavedoneC.shouldhavedoneD.couldhavedoneDC1.作为情态动词用，常用在否定句和疑问句中。Dare(need)+S+VS+daren’t(needn’t)+VIdaren’twalkthroughtheforestatnight.Dareyouwalkthroughtheforestatnight?Youneedn’treturnthebooknow.Needhegoyesterday?可兼做行为动词的情态动词：need、dare2.作实义动词用，常用在肯定句中,有人称、时态、和数的变化Heneedstogotherehimself.Hehasgrownup,wedon’tneedtoworryabouthim.3.Sth(sb)need(want,request)+doing/tobedoneThehouseneedscleaning/tobecleanedTheboyneedssendingtothehospitalatonce.句型时态动词情态动词dare实义动词dare肯定句现在时daredodare/darestodo过去时daredodaredtodo否定句现在时daren’t/darenotdodo/doesnotdare(to)do过去时darednotdodidnotdare(to)do疑问句现在时Darehedo?Doyou/Doeshedare(to)do?过去时Daredhedo?Didhedare(to)do2.Iwonderhowhe____thattotheteacher.A.daretosayB.daresayingC.notdaresayD.daredsayD4.Asitturnedouttobeasmallhouseparty,we____soformally.Aneedn’tdressB.didn’thavetodressupC.MightnothavedressedupD.needn’thavedressedupD1.判断正误:Howdareyousaysuchathing?Howdareyoutosaysuchathing?Hedaren’ttospeakEnglishbeforesuchacrowd,didhe?Hedaren’tspeakEnglishbeforesuchacrowd,darehe?Nobodyneedtobeafraidofcatchingthedisease.Nobodyneedbeafraidofcatchingthedisease.Thesedishesneedbecleanedcarefully.Thesedishesneedtobecleanedcarefully.Thesedishesneedcleaningcarefully.hadbetter(最好),should(应该)与oughtto（应该）均为提建议、阐述观点的情态动词，其后接动词原形。should比hadbetter语气强，oughtto语气最强。一般情况下should与oughtto可通用。例1：你最好立即去那里。Youhadbettergothereatonce.例2：你应该努力工作。Yououghtto/shouldworkhard.（一）否定句hadbetter,should,oughtto用于否定句时，否定词均位于其后，具体形式为：hadbetternotdo,shouldn't/shouldnotdo,oughtn‘ttodo。例1此时你最好别出发。：Youhadbetternotstartatthistime.更多资源xiti123.taobao.com例2：她不应该浪费时间。Sheoughtn'ttowastetime.（二）一般疑问句hadbetter,should,oughtto用于一般疑问句时，分别将had,should,ought提至句首。例1：他最好立即出发吗？Hadhebetterstartearlyatonce?例2：你应该这么做吗？Shouldyoudolikethis?例3：他应该去那里吗？Oughthetogothere?（三）反意疑问句陈述句谓语动词含hadbetter,should,oughtto时，反意疑问句为：had,should与ought+主格人称代词或hadn‘t,shouldn’t,oughtn‘t+主格人称代词。例1：你最好别回家，是吗？Youhadbetternotgohome,hadyou?例2：你应该认真学习，是吗？Youshouldstudyhard,shouldn'tyou?例3：你上课不应该讲话，是吗？Heoughtn'ttospeakinclass,oughthe?1．Theflowerisdead.I_______ityesterday.A．shouldwaterB．mustwaterC．shouldhavewateredD．mustn’thavewatered2．WhattimeoughtI_______?A．arrivedB．arrivingC．arriveD．toarrive3．He_______speaktohismotherlikethat.A．oughtnottoB．doesn’toughttoC．notoughttoD．oughttonot4．Idon’tthinkwe’dbetter_______itanymore.A．discussB．discussingC．todiscussD．discussed5．Yououghtto_______him,butyoudidn’t.A．helpB．helpedC．helpingD．havehelpedCDAAD