高考情態(tài)動(dòng)詞考點(diǎn)Mv情態(tài)動(dòng)詞的個(gè)數(shù)（15）（4組）can/could,may/might,shall/should,will/would（4對(duì)）haveto,hadbetter,oughtto,usedto（3個(gè)）must,need,dare4

4

3考點(diǎn)一：情態(tài)動(dòng)詞的基本用法（一）can/could1.表能夠做某事（具備某種能力）；could主要指過(guò)去能夠…Twoeyescanseemorethanone.

Couldthegirlreadbeforeshewenttoschool?

2.表許可；用于疑問(wèn)句中表請(qǐng)求（could表示的語(yǔ)氣更加委婉）；用于否定句中表不允許。CanIhavealookatyournewpen?

Youcan’twearjeansatwork.3.表可能性或推斷，多用于否定或疑問(wèn)句中；若用于肯定句中表常有的行為和情形，意為“有時(shí)會(huì)；時(shí)而可能”Thatcan’tbeMary---she’sinNewYork.(用于否定句中表某事肯定不真實(shí)。)Hecanbestubbornsometimes.Itcanbecoldhereinwinter.4.表疑惑或驚訝等情緒；意為“究竟能；難道會(huì)；到底是”Whatcantheybedoing?他們究竟在干些什么？Wherecanshehaveputit?她到底把它放哪了？（二）must1.must用于肯定句中表說(shuō)話人的意志或義務(wù)；或堅(jiān)決要求某人做某事；否定mustn’t表禁止Imustgotothebankandgetsomemoney.Carsmustn’tparkinfrontoftheentrance.2.在以must開(kāi)頭的疑問(wèn)句中，肯定回答用must;否定回答用needn’t或don’thaveto—Mustwehandinourexercisebooksnow?—Yes,youmust./No,youneedn’t./No,youdon’thaveto.

3.表示可能性或肯定的推斷。意為“想必、準(zhǔn)是、一定”等，只用于肯定句。Hemustbeill.Helookssopale.

She’swearingadiamondnecklace.Shemusthavealotofmoney.4.表說(shuō)話人生氣或不滿的情緒，意為“偏要；非得”----Mustyouinterruptnow?Can’tyouseeI’monthephone?----Sorry,sir,butit’surgent.5.用于短語(yǔ)ifyoumust(dosth)，表雖然不贊同但可允許，意為“如果你一定要的…的話”----CanIsmokehere?----Ifyoumust.（三）will/would

1.表意愿，用于各種人稱的陳述句Iwilldoanythingforyou.Theywon’tlendusanymoremoney.2.表請(qǐng)求允許，用于疑問(wèn)句Willyousendthisletterforme,please?Wouldyoumindleavingmealoneforafewminutes?3.表習(xí)慣Shewilllistentomusic,aloneinherroom,forhours.Hewouldspendhoursonthetelephone.4.主語(yǔ)為物時(shí)，多用于否定句中，意為“不起作用”Thedoorwon’topen.（四）may/might

1.表允許，might可以指過(guò)去時(shí)間，也可指現(xiàn)在時(shí)間，語(yǔ)氣更委婉。Youmaytakewhateveryoulike.May(Might)Iaskforaphotoofyourbaby?2.表可能（事實(shí)上）。might可以指過(guò)去時(shí)間，也可以指現(xiàn)在時(shí)間，但語(yǔ)氣更加不肯定。Hemaybeathome,butI’mnotsure.

Shemay/mightnotknowaboutit.

3.may還可表祝愿Mayyousucceed!（五）shall

1.shall用于二、三人稱的陳述句，表“命令、威脅、警告、強(qiáng)制、允諾、決心”等YoushalldoasIday.(命令)Youshallhavemyanswertomorrow.(允諾)Nothingshallstopusfromcarryingouttheplan.(決心)2.shall用于一、三人稱的疑問(wèn)句，表征詢意見(jiàn)或請(qǐng)求允許,多與I或we連用Whatshallwedothisweekend?3.shall常用于主語(yǔ)是第三人稱的條約、法律法規(guī)、規(guī)章制度等文件中表“義務(wù)”或“規(guī)定”O(jiān)neofourrulesisthateverystudentshallwearschooluniformwhileatschool.（六）should1.表義務(wù),意為“應(yīng)該”（某件事宜做），用于各種人稱。Youshouldbepolitetoyourteachers.

Youshouldn’twasteanytime.

2.表推測(cè)，意為“想必一定、照說(shuō)應(yīng)該、估計(jì)”等。Thefilmshouldbeverygoodasitisstarringfirst-classactors.

Theyshouldbehomebynow.

3．（表示不確定）萬(wàn)一。IfIshouldseehim,I'lltellhim.Ifitshouldraintomorrow,thesportsmeetingwouldbepostponed.4.should可以用來(lái)表示意外；常意為“竟然；居然”Ifinditastonishingthatheshouldbesorudetoyou.(七)oughtto表義務(wù)，意為“應(yīng)該”（因責(zé)任、義務(wù)等該做），口氣比should稍重。Youarehisfather.Yououghttotakecareofhim.Yououghtn’ttosmokesomuch.

（八）usedto\hadbetter\haveto1.usedto表示過(guò)去的習(xí)慣動(dòng)作或狀態(tài)（現(xiàn)已不復(fù)存在）

Hetoldusheusedtoplayfootballwhenhewasyoung.疑問(wèn)句:Didyouusetogothere?/Usedyoutogothere?否定句:Ididn’tusetogothere./Iusedn’ttogothere.反意疑問(wèn)句或簡(jiǎn)略回答:Sheusedtobeveryfat,didn’tshe?/usedn’tshe?--Didyouusetoplaychess?--Yes,Idid.--Usedyoutogetupearlyinthemorning?--Yes,Idid./Yes,Iusedto.雙性動(dòng)詞need,dare,dared

1.need可以作實(shí)義動(dòng)詞或情態(tài)動(dòng)詞。eg:Weneedtofinishthejobbeforedark.Youneedn’thurryasthere’splentytimeleft.

2.dare,dared可以作實(shí)義動(dòng)詞或情態(tài)動(dòng)詞。

eg:Hedaredtotravelabroadwhenhewasyoung.Howdareyouletyourlittlechildgooutalone?如何分辨是實(shí)意動(dòng)詞或情態(tài)動(dòng)詞？有沒(méi)有加s；有沒(méi)有加助動(dòng)詞；有沒(méi)有加to；有沒(méi)有在句首；有沒(méi)有加not；

考點(diǎn)二：表推測(cè)的情態(tài)動(dòng)詞

1.對(duì)現(xiàn)在或客觀事實(shí)的肯定的推測(cè)Must：肯定；準(zhǔn)是；想必是Should：很可能；應(yīng)該…。指按常理推測(cè)May/might：也許；大概；表示把握不大的推測(cè)Can/could：用于疑問(wèn)句表懷疑----WhatareyoudoingthisSaturday?----I’mnotsure,butImight/maygotothecinema.---Goodmorning.I’vegotanappointmentwithMissSmithinthePersonnelDepartment.---Ah,goodmorning.You______beMrs.PetersA.mightB.mustC.wouldD.can2.對(duì)現(xiàn)在情況或客觀事實(shí)的否定推測(cè)can’t：不可能；推測(cè)的語(yǔ)氣相當(dāng)有把握couldn’t：也可表不可能；語(yǔ)氣較委婉may(might)not:可能不；也許不，表推測(cè)的語(yǔ)氣不是很有把握Itcan’tbethepostmanatthedoor.It’sonlyfiveo’clock.3.對(duì)過(guò)去情況的推測(cè)musthavedone:過(guò)去一定做過(guò)某事can’thavedone/couldn’thavedone:過(guò)去不可能做某事can/couldhavedone:過(guò)去可能做過(guò)某事may/might(not)havedone:過(guò)去可能（沒(méi)）做過(guò)某事Sincenobodygavehimanyhelp,he____havedonetheresearchonhisown.A.canB.mustC.wouldD.needWhyareyoureyessored?You______havesleptwelllastnight.A.can’tB.mustn’tC.needn’tD.won’t三．情態(tài)動(dòng)詞+havedone的其他用法

should/oughttohavedone表過(guò)去本該做…卻沒(méi)有做shouldn’t/oughtnottohavedone表過(guò)去本不該做…卻做了couldhavedone表本可以/本可能做某事卻沒(méi)做mighthavedone

表本可能但實(shí)際沒(méi)有發(fā)生的事needn’thavedone

表本來(lái)不需要做卻做了Hetaughtusduringthelunchbreaksandtheeveningwhenheshouldhaveb