情态动词课件-高考英语一轮复习

情态动词情态动词有哪些？must,can(could),may(might),oughtto,shall(should),will(would),have(had)to,

need,dare,haveto,hadbetter.情态动词本意01can,could能力Canyouliftthisheavybox?Marcanspeakthreelanguages.Canyouskate?beabletodoThebabywillbeabletowalkinafewweeks.(将来的能力)Thefirewasverybig,butmostpeoplewereabletoescapefromit.(过去某时某一场合设法做成了某事)2.表示请求和允许。-----CanIgonow?-----Yes,youcan./No,youcan't.----CouldIcometoseeyoutomorrow?----Yes,youcan.(No,I'mafraidnot.)3.表示客观可能性。(多用于肯定句)

Itcanbeveryhotinourciryinsummer.Anyonecanmakemistakes.can't...too/enough:无论怎样...都不过分，越来越好Youcan'tbecarefulenoughtoacrosstheroad.=Youcan'tbetoocarefultocrosstheroad.Youcanneverdotheworktoowell.can'thelpit:无计可施Icouldn'thelpitifthebuswaslate.can'thelpdoing:情不自禁may,might

1.表示请求和允许。----Might/MayIsmokeinthisroom?----No,youmustn’t.----May/MightItakethisbookoutoftheroom?----Yes,youcan/may.(No,youcan’t/mustn’t.)MayI...？征徇对方许可时比较正式和客气。2.表示祝愿。Mayyousucceed!

Mayallyourdreamscometrue.may/mightaswell:最好...，不妨Youmayaswellstaywhereyouare.maywell:很可能...(beverylikelyto)Herappearancehaschangedsomuchthatyoumaywellnotrecognizeher.must1.表示必须、必要。Youmustcomeintime.

----Mustwehandinourexercisebookstoday?----Yes,youmust.----No,youdon’thaveto/youneedn’t.2.偏偏，非得要Mustyouwastesomuchtime?Ifyoumustsmoke,pleasegooutsidetheroom.3.表示强调（口语）Imustsay,youarelookingextremelywell.must/havetoMust是说话人的主观看法，而haveto则强调客观需要。haveto有更多的时态形式。Shall/shouldshall:1)shall用于第一人称，第三人称，征求对方的意见。（问句）Whatshallwedothisevening?2)shall用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。（陈述句）1.Youshallfailifyoudon’tworkhard.(警告)2.HeshallhavethebookwhenIfinishit.(允诺)3.Heshallbepunished.(威胁)should：1.应该，应当（义务，职责）Ithinktoday'schildrenshouldreallylearntorespecttheirelders.2.表示惊讶，难以置信：竟然Themanshouldbesorudetoalady.will/would1.表示请求、建议等，would更委婉。Will/Wouldyoupassmetheball,please?2.表示意志、愿望和决心。Iwillneverdothatagain.Theyaskedhimifhewouldgoabroad.3.will表示规律性的“注定会”Youwillfailifyoudon'tworkhard.Manwilldiewithoutair.4.will表示习惯性，经常性，倾向性：经常，总是Theoldmanisstrange.Hewillsitthereforhourswithoutsayinganything.Thedoorwouldn'topen,nomatterhowhardshepushed.would表示过去的习惯：总是，总会Everyevening,shewouldsitbythewindow,deepinthought.would/usedto1.Usedto可指过去的状态或情况，would则不能。如：SchoolchildrenusedtoknowthestoryofhowAbrahamLincolnwalkedfivemilestoreturnapennyhe'doverchargedacustomer．Thereusedtobetoparkhere.2.usedto强调过去的行为同现在的对比，“过去怎样，则现在却不这样了。”would则表示单纯的过去习惯.Heusedtobeaverystrongman.过去很强壮，而现在体质差。Wewouldsitintheyardeveryeveningandlistentohisstory.(过去重复的行为)情态动词推测02对目前状态动作推测：情态动词+do：Idon'tknowwheresheis，shemaybeinWuhan.对正在发生的事情的推测：情态动词+bedoing：Atthismoment，ourteachermustbecorrectingourexampapers.对已经发生的事情的推测：情态动词+havedoneMikecan'thavefoundhiscar，forhecametoworkbybusthismorning.Exercises03Peter________comewithustonight,butheisn’tverysureyet.A.mustB.canC.mayD.will.Ididn’thearthephone,I________asleep.A.mustbeB.musthavebeenC.shouldbeD.shouldhavebeenTherewasplentyoftime,she________.A.mustn’thavehurriedB.couldn’thavehurriedC.mustnothurryD.needn’thavehurriedTomislate.He________thewrongbus.A.musttakeB.musthavetakenC.mighttakeD.couldtakeThoughshewasseriouslyill,she________completetheworkintime.A.wouldB.wasabletoC.waspossibletoD.might—Whotoldyoumytelephonenumber?—Idon’tremember.It________Mary.—Itcan’tbeMary,shedoesn’tknowit.A.mayhavebeenB.canhavebeenC.mustbeD.canbe—Helearntthelanguageinthreemonths.—He________veryhard.A.mustworkB.mighthaveworkedC.musthaveworkedD.mightwork—____youinterruptnow?Can'tyouseeI'monethephone?—Sorrysir,butit'surgent.mustYou_____totowntoseethefilmyesterday.ItwillbeonTVtonight.A.needn'tgoB.hadbetternotgoC.shouldnotgoD.needn'thavegoneThepoormanneedsourhelp,_____he?A.needB.needn'tC.doesD.doesn'tYou_____failtopasstheentranceexaminationifyoudon'tstudyhard.A.couldB.mustC.shallD.shouldSomeaspectsofapilot'sjob______beboring,andpilotsoften____workatinconvenienthours.A.can;havetoB.may;canC.haveto;mayD.oughtto;mustIdidn'tseeherinthemeeting-roomthismorning.She____atthemeeting.A.mustn'thavespokenB.shouldn'thavespokenC.needn'thavespokenD.couldn'thavespoken—Whyar