高一英语语法情态动词

于对市爱美阳光实验学校高一英语语法：情态动词〔2〕【本讲主要内容】语法：情态动词〔2〕【知识总结归纳】〔一〕表示可能的情态动词：may，might，must，can，could1.may，might，could都可以用来表示可能性，表示可能，也许，它既表示现在的可能性，也表示将来的可能性：Youmayberight.You'dbettertakeanumbrella.Itmightraintonight.Thephoneisringing.ItcouldbeTim.Ihaven'tdecidedwheretospendmyholidays.ImaygotoIreland.

Hemayhaveleftyesterday.——Iwonderwhyhewasinsuchabadmoodyesterday.——Hemaynothavebeenfeelingwell.Hemighthaveknownaboutit.Shemightnothaveseenyou.3.may，might，could都可以用于疑问表示请求得到允许：MayIhaveyourname?MightIhaveawordwithyou?CouldIborrowyourdictionary?4.must也表示可能性，但它的可能性要大些，一般是比拟有把握的推测ThatmustbeJohn.I'vebeenexpectinghim.Thelightison.Theymustbeathome.Thebusdoesn'talwayscomeontime.Wemighthavetowaitafewminutes.它们的否形式是：maynot，mightnot意思是“可能不〞

Youhavebeentravelingallday.Youmustbeverytired.must对的有把握的否的推测是can't,couldn't,而不是mustn'tYouhavejusthadlunch.Youcan'tbehungryalready.Theyhaven'tlivedhereforverylong.Theycan'tknowmanymoney.Itmightnotbetrue.money.Itmightnotbetrue.I'mnotsurewhetherIcanlendyouanymoney.ImaynothaveenoughpeopleThatcouldn'tbeJohn.Iknowhe'sstilloutoftown.must,can't,couldn't后面可以接havedone表示对过去的推测.Annmaynotcometothepartytonight.Sheisn'twell.2.may,might,could后面接havedone的形式,表示一种过去的可能性是对过去动作的推测。

ThephonerangbutIdidn'thearit.Imusthavebeenasleep.Janewalkedpastmewithoutspeaking.Shecan'thaveseenme.Youcouldn'thaveforgottenmyname.Exercise：Theresntbeverygood.It'salwaysfullofpeople.Theresntbeverygood.It'salwaysempty.WhereisBob?I'mnotsure.Hebehavinglunch.Don'tmaketoomuchnoise.Youwakethebaby.Someonecalledmeupinthemiddleofthenight.TheyhungupbeforeIcouldanswerthephone.It〔notbe〕mybrother;hedoesn'thaveatelephone.It〔be〕someoneIknow,butwhywouldtheycallinthemiddleofthenight?It〔be〕awrongnumber.JanetlookedreallyunhappyasshewasleavingProfessorBrown?;office.She〔failed〕anotherexam.Iknowshe'salreadyfailedonemidtenn,andshehadtwomorelastweek.It〔be〕herchemistrytest.Iknowshewasreallynervousaboutit.Butit〔be〕hercalculusexam.She'sreallygoodatmathematics,andIknowshestudiedalotforit.答案：must2.can?t3.may/might/could4.may/mightcan?t/couldrfthavebeen,may/mighthavebeen,musthavebeenmusthavefailed,may/mighthavebeen,can?thavebeen〔二〕must,havetomust表示义务，或强制，Ifyoucan?tfinishthebookbythen,youmustcomeandrenewit.Imustremembertowritehome.I'mafraidImustgonow.Ipromisedtobehomeatten.mustn?t意思是不许可，不该Wemustn'twasteourtime.MayIborrowthismagazine?No,youmustn't.needn?t用来表示没有做…事的必要.Youcancomewithmeifyoulikebutyouneedn'tcomeifyoudon'twantto.We'vegotplentyoftime.Weneedn'thurry.Icanmanagetheshoppingalone.Youdofttneedtocomewithme.haveto也可以表示该，必须，但must多表示主观意志，haveto往往强调客观需要.而且haveto可以用在各种不同的时态.Youcan?tturnrighthere.Youhavetoturnleft.Myeyesightisn'tverygood.Ihavetowearglassesforreading.Georgecan?tcomeoutwithusthisevening.Hehastowork.WehadtoTeturnhomeat4o'clockyesterday.Youwillhavetocometomorrow.A.canhaveA.canhaveB.mustn'thave1.don'thaveto1.don'thaveto2.must3.needrft/don'thavetoShedoesn'thavetoworkonSundays.WhatdoIhavetodotogetalicence?Exercise：Wehaveenoughfoodathomesowegoshoppingtoday.Jimgavemealettertopost.Iremembertopostit.There?splentyoftimeforyoutomakeupyourmind.Youdecidenow.Youwashthosetomatoes.Theyhavealreadybeenwashed.5.Youreallyworkharderifyouwanttopasstheexamination.5.Youreallytakeitwork6.Wecouldn?trepairthecarourselves.Wetoagarage.takeitworkI?msorryIcouldn?tcomeyesterday.Ilate8.Whateveryoudo,youtouchthatswitch.It'svery8.Whateveryoudo,youtouchthatswitch.It'sverydangerout.Thisisavaluablebook.Youlookafterityoung.carefullyandyouloseit.carefullyandyouloseit.Juliawearsglasses.ShewearglassessinceshewasveryJuliawearsglasses.Shewearglassessinceshewasvery答案:

4.don'thaveto5.haveto6.hadto7.hadto8.mustn't9.must,mustn't4.don'thaveto5.haveto6.hadto7.hadto8.mustn't9.must,mustn't10.hadto【高考】〕1.ShallItellJohnaboutit?No,youI'vetoldhimalready.No,youI'vetoldhimalready.A.needn?tC.mustn'tItacomfortablejourney.A.can?tbeB.shouldn?A.needn?tC.mustn'tItacomfortablejourney.A.can?tbeB.shouldn?tbemustn'thavebeencouldn?thavebeen〕3.Johnny,youplaywiththeknife,youhurtwouldn?tD.shouldn?t〕2.Therewerealreadyfivepeopleinthecarbuttheymanagedtotakemeaswell.yourself.won't,can?won't,can?tmustn'tmayshouldn?shouldn?t,mustcan?t,shouldn?t〕4.Jack〕4.Jackyet,otherwisehewouldhavetelephonedme.A.mustn'thavearrivedB.shouldnA.mustn'thavearrivedB.shouldn?thavearrivedC.can?C.can?thavearrivedD.neednothavearrived〕5.Susanwrittenareportlikethis.C.canC.can?thaveD.oughttonothave〕〕6.SorryI'mlate.haveturnedoffthealarmclockA.mightB.shouldC.canD.will〕7.MysistermethimatthegrandTheatreyesterdayafternoonsoheyourlecture.A.couldn?thaveattendedB.needn?thaveattendedC.mustn'thaveattendedD.shouldn?thaveattendedA.C.〕8.Shethefilm.Sheknowsnothinggaboutit.can?tseemustsee〕9.NancyB.D.clockA.mightB.shouldC.canD.will〕7.MysistermethimatthegrandTheatreyesterdayafternoonsoheyourlecture.A.couldn?thaveattendedB.needn?thaveattendedC.mustn'thaveattendedD.shouldn?thaveattendedA.C.〕8.Shethefilm.Sheknowsnothinggaboutit.can?tseemustsee〕9.NancyB.D.can?thaveseenmustn'thaveseentheletterfromhermother.No,shecan?thave.Thepostmanhasn?tcomeyet.A.canreceiveB.canhavereceivedC.musthavereceivedD.mustreceiveandgonebacktosleepagain.'〕〕10.Itisrathercoldhere.Shallwelightafire?No,webecausethingsareeasytocatchNo,wefire.A.won'tB.can?tC.mustn'tD.shan?t答案:C.shouldhaveC.shouldhaveD.cannothave1.A2.D3.B4.C5.C6.A7.A8.B9.C10.C【实战模拟】〕1.MayIleavetheofficebefore5o'clockintheafternoon?No,I'mafraidyouA.needn?tB.shouldn?tC.mustn'tD.oughtnotto〕2.Heratherstayathomethangotothecinemawithyou.A.shouldB.mightC.wouldD.hadbetter〕1.MayIleavetheofficebefore5o'clockintheafternoon?No,I'mafraidyouA.needn?tB.shouldn?tC.mustn'tD.oughtnotto〕2.Heratherstayathomethangotothecinemawithyou.A.shouldB.mightC.wouldD.hadbetter〕3.DoyoustillrememberthedaywhenwewenttotheGreatWall?Ican?trememberitwell,butsometimelastautunm.A.mightitbeB.couldithavebeenC.coulditbeD.mustithavebeen〔〕4.Doyouthinkhewilldomeafavor?AsfarasIknow,heisthelastonetohelpothers.Hebepreparedtogi