情態(tài)動詞課件-高考英語一輪復(fù)習(xí)

情態(tài)動詞情態(tài)動詞有哪些？must,can(could),may(might),oughtto,shall(should),will(would),have(had)to,

need,dare,haveto,hadbetter.情態(tài)動詞本意01can,could能力Canyouliftthisheavybox?Marcanspeakthreelanguages.Canyouskate?beabletodoThebabywillbeabletowalkinafewweeks.(將來的能力)Thefirewasverybig,butmostpeoplewereabletoescapefromit.(過去某時某一場合設(shè)法做成了某事)2.表示請求和允許。-----CanIgonow?-----Yes,youcan./No,youcan't.----CouldIcometoseeyoutomorrow?----Yes,youcan.(No,I'mafraidnot.)3.表示客觀可能性。(多用于肯定句)

Itcanbeveryhotinourciryinsummer.Anyonecanmakemistakes.can't...too/enough:無論怎樣...都不過分，越來越好Youcan'tbecarefulenoughtoacrosstheroad.=Youcan'tbetoocarefultocrosstheroad.Youcanneverdotheworktoowell.can'thelpit:無計可施Icouldn'thelpitifthebuswaslate.can'thelpdoing:情不自禁may,might

1.表示請求和允許。----Might/MayIsmokeinthisroom?----No,youmustn’t.----May/MightItakethisbookoutoftheroom?----Yes,youcan/may.(No,youcan’t/mustn’t.)MayI...？征徇對方許可時比較正式和客氣。2.表示祝愿。Mayyousucceed!

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

----Mustwehandinourexercisebookstoday?----Yes,youmust.----No,youdon’thaveto/youneedn’t.2.偏偏，非得要Mustyouwastesomuchtime?Ifyoumustsmoke,pleasegooutsidetheroom.3.表示強調(diào)（口語）Imustsay,youarelookingextremelywell.must/havetoMust是說話人的主觀看法，而haveto則強調(diào)客觀需要。haveto有更多的時態(tài)形式。Shall/shouldshall:1)shall用于第一人稱，第三人稱，征求對方的意見。（問句）Whatshallwedothisevening?2)shall用于第二、三人稱，表示說話人給對方的命令、警告、允諾或威脅。（陳述句）1.Youshallfailifyoudon’tworkhard.(警告)2.HeshallhavethebookwhenIfinishit.(允諾)3.Heshallbepunished.(威脅)should：1.應(yīng)該，應(yīng)當(dāng)（義務(wù)，職責(zé)）Ithinktoday'schildrenshouldreallylearntorespecttheirelders.2.表示驚訝，難以置信：竟然Themanshouldbesorudetoalady.will/would1.表示請求、建議等，would更委婉。Will/Wouldyoupassmetheball,please?2.表示意志、愿望和決心。Iwillneverdothatagain.Theyaskedhimifhewouldgoabroad.3.will表示規(guī)律性的“注定會”Youwillfailifyoudon'tworkhard.Manwilldiewithoutair.4.will表示習(xí)慣性，經(jīng)常性，傾向性：經(jīng)常，總是Theoldmanisstrange.Hewillsitthereforhourswithoutsayinganything.Thedoorwouldn'topen,nomatterhowhardshepushed.would表示過去的習(xí)慣：總是，總會Everyevening,shewouldsitbythewindow,deepinthought.would/usedto1.Usedto可指過去的狀態(tài)或情況，would則不能。如：SchoolchildrenusedtoknowthestoryofhowAbrahamLincolnwalkedfivemilestoreturnapennyhe'doverchargedacustomer．Thereusedtobetoparkhere.2.usedto強調(diào)過去的行為同現(xiàn)在的對比，“過去怎樣，則現(xiàn)在卻不這樣了?！眞ould則表示單純的過去習(xí)慣.Heusedtobeaverystrongman.過去很強壯，而現(xiàn)在體質(zhì)差。Wewouldsitintheyardeveryeveningandlistentohisstory.(過去重復(fù)的行為)情態(tài)動詞推測02對目前狀態(tài)動作推測：情態(tài)動詞+do：Idon'tknowwheresheis，shemaybeinWuhan.對正在發(fā)生的事情的推測：情態(tài)動詞+bedoing：Atthismoment，ourteachermustbecorrectingourexampapers.對已經(jīng)發(fā)生的事情的推測：情態(tài)動詞+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