高中英語(yǔ)語(yǔ)法情態(tài)動(dòng)詞

學(xué)習(xí)好資料歡迎下載學(xué)習(xí)好資料歡迎下載學(xué)習(xí)好資料歡迎下載情態(tài)動(dòng)詞

I情態(tài)動(dòng)詞的特征：本身有詞義。不能獨(dú)立作謂語(yǔ)。2.后接動(dòng)詞原形一起構(gòu)成謂語(yǔ)。3.不隨人稱和數(shù)的變化。II情態(tài)動(dòng)詞各自的基本意義及用法：1.can與could用法對(duì)比點(diǎn)cancould1、表“能力”Canyouliftthisheavybox?Icouldn’tunderstandwhathesaidatall.2、表“許可”Youcanuseadifferentmaterialinstead.HesaidIcouldborrowhisbike.3、“懷疑”No,no,itcan’tbetrue.Whatonearthcanthismean?Wethoughtthestorycouldnotbetrue.Howcouldyoubesocareless?4、can與beableto區(qū)別could代替can，表示語(yǔ)氣更為婉轉(zhuǎn)。Eg.CouldIuseyourbike?Yes,Icancan(能夠)=beableto(僅表能力時(shí))，但beableto表示一番努力后，才能做得到，且有更多的時(shí)態(tài)。2.may與might用法對(duì)比點(diǎn)maymight1．表“詢問(wèn)”MayI…?(=CanI…?)MightI…?(=CouldI…?)(但比用may更客氣)2.表“允許”Youmaytaketheboythere.Hetoldmehemightcome.(might與told相呼應(yīng))3．表“可能”“或許”Shemaynorlikethisplace.I’mafraidhemightnotlikethisplay.注：1.MayI…?的答語(yǔ)。2.may可表示期望或祝愿Mayyousucceed!3.may(might)用于目的狀語(yǔ)從句?？隙ǎ篩es,youmay.否定：No,youmustn’t不行（語(yǔ)氣強(qiáng)硬）No,youmaynot或No,you’dbetternot.Theemperorgavethemsomegoldinorderthattheymightbegintheirworkatonce.3.must與haveto用法對(duì)比點(diǎn)musthaveto1.表“必須”（主觀看法）必須；沒(méi)有過(guò)去式，可用于間接引語(yǔ)中。HetoldmeImustdoaccordingtowhathesaid.（客觀需要）不得不，有多種時(shí)態(tài)。It’srainingheavily,wecan’tgonow.2.疑問(wèn)句MustI…?Yes,youmust.（一定）No,youneedn’t./youdon’thaveto.(不必)Doyouhavetogotoday?Yes,wedo.Youdon’thavetoworryaboutthat.4.need與dare用法對(duì)比點(diǎn)needdare1.情態(tài)v.+動(dòng)詞原形1）否定式2）疑問(wèn)式Heneednot(needn’t)go.---Needwedoitagain?---No,youneedn’tdoitagain.Hedarenotsayso.Dareshegooutaloneatnight?HowdareyousayI’munfair?Ifhedaredothat,he’llbepunished.Idaresay.(固定用法)2.實(shí)義v.+todo1）肯定式2）否定式3）疑問(wèn)式Heneedstogo.Hedoesn’t(doesnot)needtogo.Doesheneedtodoitagain?No,hedoesn’tneedotdoitagain.Hedarestosay.Hedoesnot(doesn’t)daretosay.Ifyoudaretojumpintothewaterfromhere,sodareI.3.didnotneedtodo表示過(guò)去沒(méi)必要做Shedidn’tneedtoattendthemeetingyesterday,andshestayedwithherchildren.(她沒(méi)有參加)5.should與oughtto用法對(duì)比點(diǎn)shouldoughtto1、表“應(yīng)該”表勸告、建議Youshouldlistentothedoctor’sadvice.WeshouldlearnfromZhangHua.“有責(zé)任有必要”做某事Yououghttofinishyourworkbeforeyougohome.Weoughttohelpeachother.2、表“估計(jì)”Theyshouldgethomebynow.“非常可能”的事，可譯為“總應(yīng)該”Ifwestarttoworkrightnow,weoughttofinishitbeforelunch.注：1）should還可在虛擬語(yǔ)氣中的使用2)注意：oughtto的疑問(wèn)式及否定式---Oughthetogo?---Yes,Ithinkheoughtto.---No,heoughtn’tto.否定式：oughtn’ttodo(不說(shuō)oughttonotdo)反疑問(wèn)句：oughtn’t______?6.shall與will用法shallwill1.征詢對(duì)方意見(jiàn)或請(qǐng)求指示，用于第一、三人稱：ShallI(we)…?Shallhe(she)…?WhereshallI(we)waitforyou?1.詢問(wèn)對(duì)方的意思或向?qū)Ψ教岢鲆螅篧illyou(please)…?Won’tyou…?Wouldyouliketo...?(would替代will更客氣)Won’tyougoandseethefilm?你不去看電影嗎---Yes,IthinkIwill.不，我想去。2.表示說(shuō)話人的“意愿”有“命令”“警告”“強(qiáng)制”“允諾”“決心”等，用于第二、三人稱。YoushalldowhatItellyou(todo).我叫你干什么你就干什么。Everythingshallbedonetosavetheship.一定要竭盡全力來(lái)拯救這艘船。2.表示“意志”“意愿”，用于各種人稱：Iwon’tdoanythingyoudon’tlike.我不會(huì)做任何你不喜歡的事。Would表示過(guò)去時(shí)間的“意志”“意愿”Shylockwouldnottakethemoneyearlier.夏洛克先前是不肯要錢的。7.usedto與would用法usedtowould1.表示過(guò)去的動(dòng)作、狀態(tài)，重在與現(xiàn)在情況的對(duì)比，不一定要有時(shí)間狀語(yǔ)。Iusedtoplaycardsalot,butnowIseldomplay.Myhometownisnotwhatitusedtobe.1.只表示過(guò)去動(dòng)作的重復(fù)，有明確的時(shí)間狀語(yǔ)。IwouldgotoseemygrandfatheronSundaywhenhewasinthemiddleschool.2.would后只接表動(dòng)作的動(dòng)詞，不接表認(rèn)識(shí)或狀態(tài)動(dòng)詞Heusedtobenervousintheexam.2.表示過(guò)去的習(xí)慣有時(shí)可互換：Whenwewereveryyoung,weusedto/wouldgoskatingeverywinter.3.表示過(guò)去的次數(shù)時(shí)，不能使用：(√）WewenttotheGreatWallfivetimeswhenwewereyoung.(X)Weusedtogo/wouldgototheGreatWallfivetimeswhenwewereyoung.注：usedtodo的否定式：usedn’ttodo或didn’tusetodo(usedn’t也可寫作usen’t)疑問(wèn)式：Didyouusetodo?Didn’tyouusetodo?Usedyoutodo?Usedn’tyoutodo?II情態(tài)動(dòng)詞表推測(cè)：大多數(shù)情態(tài)動(dòng)詞（除表‘能力、許可、意志’外），都可以表示推測(cè)，其程度有差異。按可能性程度的高低排列為：must﹥will﹥would﹥oughtto﹥should完全肯定完全可能很可能﹥can﹥could﹥may﹥might可能有可能2.區(qū)分情態(tài)動(dòng)詞的否定含義：maynot或許不、可能不mightnot可能不can’t不可能mustn’t不許、禁止shouldn’t不應(yīng)該needn’t不必3.情態(tài)動(dòng)詞表推測(cè)具體運(yùn)用：情態(tài)動(dòng)詞可以對(duì)現(xiàn)在、進(jìn)行、過(guò)去推測(cè)。S主+情態(tài)動(dòng)詞+be+adj對(duì)“性質(zhì)”“特征”的推測(cè)S主+情態(tài)動(dòng)詞+be+n對(duì)“職業(yè)”“事物”的推測(cè)S主+情態(tài)動(dòng)詞+動(dòng)詞原形對(duì)經(jīng)常性行為的推測(cè)S主+情態(tài)動(dòng)詞+be+V-ing對(duì)進(jìn)行著的行為的推測(cè)S主+情態(tài)動(dòng)詞+have+PP對(duì)過(guò)去的行為的推測(cè)情態(tài)動(dòng)詞表推測(cè)時(shí)：1、can只能用于否定句和疑問(wèn)句2、must只能用于肯定句（它的否定句和疑問(wèn)句其實(shí)就用can來(lái)代替了）3、如句中有情態(tài)動(dòng)詞+完成時(shí)，定是對(duì)過(guò)去的推測(cè)。4、句中如有表示不肯定的話語(yǔ)E.gIamnotsure;Idon’tknow之類，常選may/might的各種形式。4.表示反勸的特殊的表推測(cè)形式1).could+have+P.P.表示本來(lái)能做到，但事實(shí)上沒(méi)有做到。Hecouldhavefinishedthetaskontime,buttheheavysnowcame..couldn’t+have+P.P.表示本來(lái)不能做到，但已經(jīng)做到了。Shecouldnothavecoveredthewholedistance,butinfactshearrivedaheadoftime.needn’t+have+P.P.表示本不必做的，但已經(jīng)做到了。Sheneedn’thaveattendedthemeetingyesterday,butshedid.)should/oughtto+have+P.P.表示該做而沒(méi)有做Theplantisdead.Ishould/oughttohavegivenotmorewater.shouldn’t/oughtn’tto+have+P.P.表示不該做而做了。Yououghtn’tto/shouldn’thavetakenherbikewithoutpermission.5.注意：must只能用于肯定句（它的否定句和疑問(wèn)句其實(shí)就用can來(lái)代替了）must+have+P.P.表示對(duì)過(guò)去肯定的推測(cè)，“一定是，準(zhǔn)是”Theroadiswet.Itmusthaverainedyesterday.can+have+P.P.表示對(duì)過(guò)去的推測(cè)（限于問(wèn)句中）Canshehavesaidso?他可能這樣說(shuō)嗎？can’t+have+P.P.表示對(duì)過(guò)去的否定推測(cè)Hecannothavesaidsuchafoolishthing.III情態(tài)動(dòng)詞表推測(cè)的反意疑問(wèn)句情態(tài)動(dòng)詞表推測(cè)的反意疑問(wèn)句，簡(jiǎn)單來(lái)說(shuō)，就是以情態(tài)動(dòng)詞后的時(shí)態(tài)為淮，如句子里有明確的時(shí)間狀語(yǔ)，則以其為準(zhǔn)。以must為例：E.g.1.Youmustbehungrynow,aren’tyou?2.HemustbewatchingTV,isn’the?3Tommusthavelivedherforalongtime,hasn’the?4.Shemusthavearrivedyesterday,didn’tshe?注：如選擇題中（以Shemusthavearrivedyesterday,didn’tshe？為例）既有didn’tshe又有hasn’tshe則以didn’tshe？為最佳答案。IV情態(tài)動(dòng)詞專項(xiàng)練習(xí)與解析一()1.You_____returnthebooknow.Youcankeepittillnextweekifyoulike.A.can’t B.mustn’t C.needn’t D.maynot()2.Whereismypen?I_____it.A.mightlose B.wouldhavelost C.shouldhavelost D.musthavelost()3.IwishI_____youyesterday.A.seenB.didsee C.hadseen D.weretosee()4.Ididn’thearthephone.I_____asleep.A.mustbe B.musthavebeen C.shouldbe D.shouldhavebeen()5.Ifmylawyer_____herelastSaturday,he_____mefromgoing.A.hadbeen;wouldhaveprevented B.hadbeen;wouldpreventC.were;wouldpreventD.were;wouldhaveprevented()6.He_____youmorehelp,eventhoughhewasverybusy.A.mighthavegiven B.mighthave C.mayhavegiven D.maygive()7.Ifit_____forthesnow,we_____themountainyesterday.A.werenot;couldhaveclimbed B.werenot;couldclimbC.hadnotbeen;couldhaveclimbed D.hadnotbeen;couldclimb()8.Withoutelectricityhumanlife_____quitedifficulttoday.A.is B.willbe C.wouldhavebeenD.wouldbe()9.Acomputer_____thinkforitself,itmustbetoldwhattodo. A.can’t B.couldn’tC.maynot D.mightnot()10.Jenny_____havekeptherword.Iwonderwhyshechangedhermind.A.must B.shouldC.need D.would()11.We_____lastnight,butwewenttotheconcertinstead.A.musthavestudied B.mightstudyC.shouldhavestudied D.wouldstudy()12.—CouldIborrowyourdictionary?—Yes,ofcourseyou_____.A.might B.willC.can D.should()13.Tomoughtnotto_____meyoursecret,buthemeantnoharm.A.havetold B.tell C.betelling D.havingtold()14.—Ifhe_____,he_____thatfood.—Luckilyhewassenttothehospitalimmediately.A.waswarned;wouldnottake B.hadbeenwarned;wouldnothavetakenC.wouldbewarned;hadnottaken D.wouldhavebeenwarned;hadnottaken()15.Peter_____comewithustonight,butheisn’tverysureyet.A.must B.mayC.can D.will()16.ItoldSallyhowtogethere,butperhapsI_____forher.A.hadtowriteitoutB.musthavewrittenitoutC.shouldhavewrittenitoutD.oughttowriteitout()17.Ididn’tseeyoursisteratthemeeting.Ifshe_____,shewouldhavemetmybrother.A.hascome B.didcomeC.came D.hadcome()18.—ShallItellJohnaboutit?—No,you_____.I’vetoldhimalready.A.needn’t B.wouldn’tC.mustn’t D.shouldn’t()19.Whenapencilispartlyinaglassofwater,itlooksasifit_____.A.breaks B.hasbrokenC.werebroken D.hadbeenbroken()20.It’snearlyseveno’clock.Jack_____behereatanymoment.A.mustB.needC.should D.can()21.—Therewerealreadyfivepeopleinthecarbuttheymanagedtotakemeaswell.—It_____acomfortablejourney.A.can’tbeB.shouldn’tbeC.mustn’thavebeenD.couldn’thavebeen()22.Johnny,you_____playwiththeknife,you_____hurtyourself.A.won’t;can’tB.mustn’t;mayC.shouldn’t;mustD.can’t;shouldn’t()23.Thefirespreadthroughthehotelveryquicklybuteveryone_____getout.A.hadtoB.wouldC.couldD.wasableto()24.—WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.—They_____bereadyby12:00.A.canB.should C.might D.need()25.—IstayedatahotelwhileinNewYork.—Oh,didyou?You_____withBarbara.A.couldhavestayedB.couldstayC.wouldstayD.musthavestayed()26.—Willyoustayforlunch?—Sorry,_____.Mybrotheriscomingtoseeme.A.Imustn’t B.Ican’t C.Ineedn’t D.Iwon’t()27.—AreyoucomingtoJeff’sparty?—I’mnotsure.I_____gototheconcertinstead.A.mustB.wouldC.should D.might()28.—Writetomewhenyougethome. —_____.A.ImustB.IshouldC.Iwill D.Ican()29.Iwasreallyanxiousaboutyou,you_____homewithoutaword. A.mustn’tleave B.shouldn’thaveleftC.couldn’thaveleft D.needn’tleave()30.—IsJohncomingbytrain?—Heshould,buthe_____not.Helikesdrivinghiscar.A.mustB.canC.needD.may專項(xiàng)練習(xí)（二）1.Ididn’tseeherinthemeetingroomthismorning.She_____atthemeeting.

A.mustn’thavespokenB.shouldn’thavespoken

C.needn’thavespokenD.couldn’thavespoken

2.Oneought_____forwhatonehasn’tdone.

A.nottobepunishedB.tonotbepunished

C.tonotpunishedD.notbepunished

3.Ifyoureallywantyourselftobeingoodhealth,youmust___always___somuch.

A.not;besmokingB.not;havesmoked

C.not;tosmokeD.benot;smoking

4.Withsomuchworkonhand,you_____toseethegamelastnight.

A.mustn’tgoB.shouldn’tgoC.couldn’thavegoneD.shouldn’thavegone

5.MostofthestudentsfeltratherdisappointedattheEnglishparty.Theysaythatit______betterorganized.

A.hadbeenB.hadtobeC.musthavebeenD.couldhavebeen

6.I’msurprisedthathe_____intheexam.

A.shouldfailB.wouldhavefailedC.mayhavefailedD.shouldhavefailed

7.Thelittlegirl_____therealone.

A.notdaregoB.daresnotgoC.darenotgoD.darenottogo

8.“Mustwedoitnow?”“No,you_____.”

A.won’tB.needn’tC.can’tD.don’t

9.Hesaidhewouldrathernot_____itrightnow.

A.doingB.todoC.doD.tobedoing

10.You_____tothemeetingthisafternoonifyouhavesomethingimportanttodo.

A.needn’ttocomeB.don’tneedcomeC.don’tneedcomingD.needn’tcome

11.Putonmoreclothes.You_____befeelingcoldwithonlyashirton.

A.canB.couldC.wouldD.must

12.I_____playfootballthanbaseball.

A.wouldratherB.hadbetterC.likebetterD.prefer

13.Ithoughtyou_____likesomethingtoread,soIhavebroughtyousomebooks.

A.mayB.mightC.couldD.must

14.Therewasplentyoftimes.She_____.

A.mustn’thavehurriedB.couldn’thavehurried

C.mustnothurryD.needn’thavehurried

15.Theplantisdead.I_____itmorewater.

A.willgiveB.wouldhavegivenC.mustgiveD.shouldhavegiven

16.You_____returnthebooknow.Youcankeepittillnextweekifyoulike.

A.can’tB.mustn’tC.needn’tD.maynot

17.It’sstillearly,you_____.

A.mustn’thurryB.wouldn’thurryC.maynothurryD.don’thavetohurry

18.Pleaseopenthewindow,_____?

A.can’tyouB.aren’tyouC.doyouD.willyou

19.We_____forherbecauseshenevercame.

A.mustn’thavewaitedB.shouldn’thavewaited

C.mustn’twaitD.needn’twait

20.—MayIstophere?—No,you_____.

A.mustn’tB.mightnotC.needn’tD.won’t

21.It’safineday.Let’sgofishing,_____.

A.won’tweB.willweC.don’tweD.shallwe

22.Ididn’tseeherinthemeetingroomthismorning.She_____atthemeeting.

A.mustn’thavespokenB.shouldn’thavespoken

C.needn’thavespokenD.couldn’thavespoken

23.—Pleasedon’tmakeanoise.—_____.I’llbeasquietasamouse.

A.Yes,Iwon’tB.No,Iwon’tC.No,IwillD.Yes,Iwill

24.Theyoungmanhasmadesomuchnoisethathe_____nothavebeenallowedtoattendtheconcert.

A.couldB.mustC.wouldD.should

25.—WhereisJohn?—He_____inthelibrary.

A.shouldbeB.mustbeC.canbeD.musthavebeen

26.Sincetheroadiswetthismorning,_____lastnight.

A.itmustrainB.itmustberaining

C.itmusthaverainedD.itmusthavebeenrain

27.—Willyourbrotherstayhometonight?

—I’mnotquitesure.He_____tothecinematonight.

A.mustgoB.cangoC.maygoD.maybegoing

28.She’salreadytwohourslate.What______toher?

A.canhavehappenedB.mayhavehappened

C.shouldhavehappenedD.musthappen

29.Youmustbeawriter,_____?

A.mustn’tyouB.areyouC.mustyouD.aren’tyou

30.Igotupearlythatmorning,butI_____sobecauseIhadnoworktodo.

A.mustn’thavedoneB.didn’tneedtodo

C.needn’thavedoneD.can’thavedone

31.He_____havecomehereyesterday,buthedidn’t.

A.couldB.shouldC.oughttoD.alltheabove

32.Imissedthelastbus,soI_____gohomeonfoot.

A.mustB.havetoC.mayD.hadto

33.Heoughttowinthefirstprize,_____he?

A.oughtn’tB.shouldn’tC.mustn’tD.bothAandB

34.Everyone_____dohisbestforthemodernizationsofourcountry.

A.canB.mayC.shouldD.might

35.Let’scleanourclassroom,_____?

A.willyouB.don’tweC.shallweD.doyou

36.Letusplaybasketball,______?

A.willyouB.don’tweC.shallweD.doyou

37.Heaskedmeforthisbookmanytimes.Pleasetellhimthathe_____haveittomorrow.

A.mustB.mayC.shallD.bothBandC

38.“Yourphonenumberagain?I_____quitecatchit.”“It’s9568442.”

A.didn’tB.couldn’tC.don’tD.can’t

39.Mother_____usstorieswhenwewerechildren.

A.wasusedtotellB.isusedtotellingC.usedtotellD.usedtotelling

40.Shewouldrather_____moremoneyonbooks_____onclothes.

A.cost…notB.tospare…don’tC.pay…thanD.spend…than情態(tài)動(dòng)詞專項(xiàng)練習(xí)與解析一【練習(xí)解析】1．C從原題中Youcankeepittillnextweekifyoulike這一信息句可知，“你不必現(xiàn)在還”。2．D從原題中Whereismypen?這一信息句可告訴考生，“筆丟了”，丟的動(dòng)作是過(guò)去發(fā)生的。因此用must+havedone表示對(duì)過(guò)去事實(shí)的肯定猜測(cè)。3．C原題中的yesterday這一信息詞告訴考生，在wish后的賓語(yǔ)從句中，用過(guò)去完成時(shí)，表示與過(guò)去事實(shí)相反的愿望。4．B從原題中的Ididn’thearthephone.這一信息可以判斷出，用musthavedone表示過(guò)去事實(shí)的準(zhǔn)確的肯定猜測(cè)。5．A從原題中l(wèi)astSaturday這一信息詞可知，條件句中用表示與過(guò)去事實(shí)相反的過(guò)去完成時(shí)，主句用would+havedone。6．Amighthave+過(guò)去分詞，在次是虛擬語(yǔ)氣，表示“本來(lái)可以給你更多的幫助”，而事實(shí)則是幫助較少。7．C從原題中的yesterday這一信息詞暗示考生，該句應(yīng)選用與過(guò)去事實(shí)相反的過(guò)去完成時(shí)，Ifithadnotbeenfor…“要不是因?yàn)椤薄?．D原題中的Withoutelectricity相當(dāng)于一個(gè)條件句：Iftherewerenoelectricity,故主句用humanlifewouldbequitedifficulttoday.9．Acan可以表示一種客觀上的能力，本句can’t，表示“不能，不會(huì)”。10．B從原題總的“Iwonderwhyshechangedhermind”“我不知道為何他改變了主意了。”這句話告訴考生Janny沒(méi)有守諾言。因此，用should+havedone，表示“過(guò)去本應(yīng)該做某事，而實(shí)際上沒(méi)有做”。11．C可參看10題。意思是：“昨晚本應(yīng)該學(xué)習(xí)，但是卻去聽音樂(lè)會(huì)了。”12．C原題中的could不是過(guò)去時(shí)，而表示一種委婉、客氣的禮貌用語(yǔ)。因此用could提問(wèn)時(shí)，用can回答。同樣用would，might提問(wèn)，用will和may回答。[注意]①—Wouldyouratherdosuchathing?—Yes,Iwould.②—Wouldyoulikesometea?—Yes,Iwould.這兩個(gè)對(duì)話中的wouldrather，wouldlike是慣用法，故不能用will來(lái)回答。因?yàn)樵谶@兩個(gè)句型中，will不能去替換would。13．A可參看10、15題。該句意思是：“湯姆本來(lái)不該告訴我你的秘密，但他沒(méi)有傷害你的意思?！眔ughtnottohavedone=shouldn’thavedone14．B從答語(yǔ)中的Luckilyhewassenttothehospitalimmediately這一信息句可提示考生，條件句應(yīng)填表示與過(guò)去事實(shí)相反的時(shí)態(tài)。15．B從原題中的butheisn’tverysureyet這一信息句可暗示考生，Peter當(dāng)晚來(lái)的可能性不大。A是“準(zhǔn)來(lái)，肯定來(lái)”，D是“將要來(lái)”。16．C可參看10、11、13題?！氨緫?yīng)該”而事實(shí)上沒(méi)有……17．D從原題中Ididn’tseeyoursisteratthemeeting和后文shewouldhavemetmybrother這兩個(gè)信息句可知，if條件句中應(yīng)填與過(guò)去事實(shí)相反的過(guò)去完成時(shí)。可參看6、7、14題。18．A你不必告訴他。因?yàn)镮’vetoldhimalready這一信息句已暗示考生了。19．C當(dāng)asif引導(dǎo)虛擬語(yǔ)氣的句子是，如果主句與從句中的謂語(yǔ)詞所表達(dá)的動(dòng)作同時(shí)發(fā)生時(shí)，asif后接一般過(guò)去時(shí)。例如：Hewalkedasifhewerelame.如果從句中的謂語(yǔ)動(dòng)作發(fā)生個(gè)在主句謂語(yǔ)動(dòng)作之前，則用過(guò)去完成時(shí)。例如：Hetalkedasifhehadknownthesecret.不論主句中的謂語(yǔ)是現(xiàn)在時(shí)還是過(guò)去時(shí)。20．C只要考生抓住nearly一詞和后文atanymoment（隨時(shí)的意思）這兩個(gè)信息詞語(yǔ)，就能很快選出C項(xiàng)，表示邏輯推測(cè)，意思是“快七點(diǎn)鐘了，杰克一會(huì)兒就該到了?！?1．D根據(jù)句意，是對(duì)過(guò)去情況的推測(cè)?！爱?dāng)時(shí)決不可能是一次舒服的乘車。”must表示對(duì)過(guò)去的推測(cè)只能用于肯定句。22．Bmustn’t表示“禁止”；may表示“有可能”。句子的意思是：“你不可以玩刀，可能會(huì)傷你自己。”23．D該題在考考生could與wasableto之間的區(qū)別。Wasableto表示在困難的情況下，經(jīng)過(guò)一番周折而“能……”，并且成功地做了。24．B該題考查情態(tài)動(dòng)詞should表推測(cè)的用法。Can和might都可以表示可能性，用might則語(yǔ)氣更加不肯定。Need表示“需要”、“必需”。Should可以表示推測(cè)，結(jié)合實(shí)際，合乎邏輯，意為“應(yīng)當(dāng)”、“該”。根據(jù)第一個(gè)說(shuō)話者說(shuō)的Ineedthemtomorrowafternoon的語(yǔ)境，可以確定正確答案為B。25．A該題在考查“情態(tài)動(dòng)詞+不定式的完成式”的用法，從會(huì)話的語(yǔ)境看，空白處應(yīng)填“could+have+過(guò)去分詞”表示過(guò)去本來(lái)能做到的事而事實(shí)上沒(méi)有做到。26．B該題考查表示請(qǐng)求的英語(yǔ)口語(yǔ)，用will來(lái)向第二人稱提問(wèn)的疑問(wèn)結(jié)構(gòu)，是表達(dá)一種意愿和請(qǐng)求，是以疑問(wèn)的形式來(lái)表達(dá)較為婉轉(zhuǎn)的祈使語(yǔ)氣，意思是“請(qǐng)你……，好嗎？”，對(duì)于這種問(wèn)句的肯定答語(yǔ)可用Sure!Certainly!Yes,ofcourse.I’dbegladto等；否定回答通常是I’msorry,Ican’t.No,I’mafraidIcan’t.I’msorry,but…I‘dliketo,but…等。27．Dmight表示“可能性”。28．C意思是“我會(huì)的”。對(duì)祈使句的肯定回答。29．Bshouldn’thavedone為本來(lái)不該做某事，而事實(shí)上做了。30．D用maynot可表示“可能不”。而cannot則表示斷然