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DoEx.1,2onP21Ex1AACDDABBEx21can2.will3.must4can/should5.may/might/will6.will7.may/might/will8.will9.would/might10.may/will/might11.can/should12.will/wouldDare形式和用法:dare同need一样,既可用作情态动词又可用作实义动词.用作情态动词时,它只有一种形式,后接动词原形,主要用于疑问句和否定句.用作实义动词时,它有动词的全部形式,即现在时单数第三人称dares,现在分词daring以及过去式和过去分词dared,后接带to的动词不定式,可用于一切句式.•情态动词Dare的基本用法:1.表示敢于,指现在或过去.如:Idarenotgothere.Dareyouaskhim?Idon’tknowwhetherhedaretry.Thekingwassohot-temperedthatnoonedaretellhimthebadnews.(指过去是形式不变)2.用于固定习语Idaresay/Idaresay我想…;也许…Mysonisnotintown,butIdaresayhewillbebeforelong.我儿子现在不在城里,不过我想不久他会回来的.Possibility:Ability:Requests:Necessity:Certainty:Permission:Suggestions:Advice:can/could,may/mightcan/could,beabletocan/could,will/would,wouldlikemust,haveto,havegotto,needmust,will,shouldcan/could,may/mightcould,may/might,shallshould,oughtto,hadbetter语法特征:1.情态动词没有人称和数的变化,即情态动词第三人称单数不加-s(haveto,havegotto,beableto除外).2.情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生.3.情态动词本身具有一定词义,但不能单独做谓语,后一般接动词原形一起构成谓语部分(oughtto,haveto/havegotto,beableto除外).4.情态动词无非谓语形式,即无不定式,分词等形式.1.—MayIpickaflowerinthegarden?—____.A.No,youneedn'tB.Not,pleaseC.No,youmustn'tD.No,youwon't2.You'dbetter____latenexttime.A.don'tB.notbeC.notbeingD.won'tbe3.('79)Hesaidhewouldrathernot____itrightnow.A.doingB.todoC.doD.tobedoing4.—MustIgivemysister-in-lawatelephonecallrightnow?—No,you.A.mustn'tB.needn'tC.can'tD.maynot5.Youreturnthebooknow.Youcankeepittillnextweekifyoulike.A.can'tB.mustn'tC.needn'tD.maynot6.—ShallItellJohnaboutit?—No,you,I'vetoldhimalready.A.need'tB.would'tC.mustn'tD.shouldn't7.Johnny,youplaywiththeknife,youhurtyourselfA.won't;can'tB.mustn't;mayC.shouldn't;mustD.can't;shouldn't1.“CanIleavethisdooropenatnight?”“Youbetternot.”A.shouldB.wouldC.couldD.had2.—Shallwegoskatingorstayathome?—Whichdoyourself?A.doyourathertoB.wouldyouratherC.willyouratherD.shouldyourather5.You____tothemeetingthisafternoonifyouhavesomethingimportanttodo.A.needn'ttocomeB.don'tneedcomeC.don'tneedcomingD.needn'tcome3.It'sfreezingoutside.You____putonyourovercoat.A.hadbettertoB.hadbetterC.wouldbetterD.wouldbetterto4.Petercomewithustonight,butheisn'tverysureyet.A.mustB.mayC.canD.will.1.—CouldIkeepthisnewEnglish-Chinesedictionaryforaweek?—Yes,ofcourseyou_______.A.couldB.willC.canD.should2.Thefirespreadthroughthehotelveryquicklybuteveryonegetout.A.hadtoB.wouldC.couldD.wasableto2.Putonmoreclothes.You___befeelingcoldwithonlyashirton.A.shouldB.wouldC.couldD.must3.Mary____beinParis,Isawherintownonlyafewminutesago.A.mustn'tB.shouldn'tC.can'tD.maynot1.Acomputerthinkforitself,itmustbetoldwhattodo.A.can'tB.couldn'tC.maynotD.mightnotII.当表猜测的情态动词出现在反意疑问句的陈述部分时,反意疑问句的疑问部分的动词从情态动词后面的不定式.e.g.,Hemustbeill,_____he?Theycan’tknowthenews,____they?ShemusthavebeentoBeijingbefore,hasn’tshe?(相当于现在完成时)Shemusthavebeeninthatday,_____she?(相当于过去时)Helookssad.Hemusthavefailedthetest,hasn’the?Hemusthavefailedtheexaminmathsyesterday,didn’the?isn’tdowasn’t('91)Jenny____havekeptherword.Iwonderwhyshechangedhermind.A.mustB.shouldC.needD.wouldB('91上海试题)Ididn'tseeherinthemeeting-roomthismorning.She____atthemeeting.A.mustn'thavespokenB.shouldn'thavespokenC.needn'thavespokenD.couldn'thavespokenD('88)We____forherbecauseshenevercame.A.needn'twaitB.shouldn'thavewaitedC.mustn'twaitD.mustn'thavewaitedB1.Ididn'thearthephone.I______asleep.A.mustbeB.musthavebeenC.shouldbeD.shouldhavebeenB2.—Therewerealreadyfivepeopleinthecarbuttheymanagedtotakemeaswell.—Itacomfortablejourney.A.can'tbeB.shouldn'tbeC.mustn'thavebeenD.couldn'thavebeenD4.Welastnight,butwewenttotheconcertinstead.A.musthavestudiedB.mightstudyC.shouldhavestudiedD.wouldstudyC3.ItoldSallyhowtogethere,butperhapsI_____forher.A.hadtowriteitoutB.musthavewrittenitoutC.shouldhavewrittenitoutD.oughttowriteitoutC5.Heyoumorehelp,eventhoughhewasverybusy.A.mighthavegivenB.mightbeC.mayhavegivenD.maygive6.Whereismypen?IitA.mightB.wouldhavelostC.shouldhavelostD.musthavelostAD7.Therewasplentyoftime.She.A.mustn'thavehurriedB.couldn'thavehurriedC.mustnothurryD.needn'thavehurriedD8.Tomoughtnottomeyoursecret,buthemeantnoharm.A.havetoldB.tellC.betellingD.havingtold9.Theplantisdead,Iitmorewater.A.willgiveB.wouldhavegivenC.mustgiveD.shouldhavegivenAD10.—IstayedatahotelwhileinNewYork.--Oh,didyou?You___withBarbara.A.couldhavestayedB.couldstayC.wouldstayD.musthavestayed11.Jack___yet,otherwisehewouldhavetelephonedme.A.mustn’thavearrivedB.shouldn’thavearrivedC.can’thavearrivedD.needn’thavearrivedAC12.Sorry,I’mlate.I____haveturnedoffthealarmclockandgonebacktosleepagain.A.mightB.shouldC.canD.willA13.—WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.--They___bereadyby12:00.A.canB.shouldC.mightD.needB14.Youcan’timaginethatawell-behavedgentlemen___besorudetoalady.A.mightB.needC.shouldD.wouldC