高考英语 二轮专题复习情态动词课件

情态动词的用法一、作用：表推测

时态

句式

现在，将来

过去

肯定句否定句或疑问句must+do肯定may\might+do不确定must\may\might+havedonecan\couldnot+docan\couldnot+havedone

特殊用法：有时可用于肯定推测的情态动词还有①can\could(表理论上的可能性)“有的时候会”②should(表有一定根据的推测)“理所应当会”▲Don’tworry.Ihavejustsentanambulancetoyourlocation.They___bethereanysecond.A.couldB.mightC.wouldD.should▲Peter___bereallydifficultattimeseventhoughheisanicepersoningeneral.A.shallB.shouldC.canD.mustAC③may\mightnot(语气弱于can\could)“也许不”▲--Whydidn’tAlexattendthepartyyesterdayevening?--He___nothavewantedtoseeme.shouldB.mightC.couldD.would▲Liza___wellnotwanttogoonthetrip–shehatestraveling.A.willB.canC.mustD.mayBD▲Hemustbereading,______he?▲Youmustdoityourself,_____you?▲Hemusthavegoneoverthearticle,_______he?▲Itmusthaverainedlastnight,________it?表猜测语气的反意疑问句的构成isn’tdon’thasn’tdidn’tcan\could(一般的能力)①表示一般的能力（联想：beabletodo特殊能力、克服困难达到、将来具备的能力）二、分类介绍②表许可--CouldIcomehereagaintomorrow?--Yes,__________.--No,___________.③could(not)havedone“本可以做却没做”We_______________(go)thereonfoot.Ataxiwasn’tnecessaryatall.youcan.youcan’tcouldhavegonemay\might①表许可，译“可以”--May\MightIuseyourphone?--Yes,__________________.--No,______________________.②may+主语+do,表“祝愿”Mayallyourdreams_____(cometrue)③maywell(not)+do“很可能”④mayaswell\mightaswell+do“最好、到不如”▲Herappearancehaschangedsomuchthatyou_________________________(recognize)her.▲You_____________(stay)hereoverthenight.你最好留在这里过夜。youmay\pleaseyoumaynot\pleasenotmaywellnotrecognizemightaswellstaymust\haveto①“必须”must主观看法havetodo客观需要Idon’tliketostayhereanylonger,I________leavenowItistoolate.I____________leavenow.--Mustwesendinourplanthisweek?--Yes,___________________.--No,you___________________________.musthavetoyoumust

needn’t\don’thaveto

★mustnot“不许、禁止”表示绝对禁止，不可用来由must提出的问句。You_________takethebooksoutofthereadingroom.

mustn’t

②WhymustitrainonSunday?ThecarmustbreakdownjustwhenIwasabouttostart.③

Allmanmustdie.④Itmustberainingoutside.翻译must非要、偏要必然一定①用于第一人称表将来。IshallgotoworkafterIhavefinishedschool.②用于一、三人称疑问句，表征求对方意见或向对方请求。--Shallhecomein?--Comein,please.③用于二、三人称陈述句，表示保证、承诺、威胁、警告。Youshallbepunishedifyouinsistondoingitthisway.④用于所有人称，表规章、法令等“必须”Eachcompetitorshallwearanumber.shall(1)表示有一定根据的推测、推论。“应该会”Thelightisonnow,theyshouldbehere.(2)说话人的感情。如惊奇、愤怒、失望等、“竟然”Youcan’timaginethatwell-behavedgentlemanshouldbesorudetoalady.(3)表示义务、责任或劝告、建议、命令等。“应该”Youshouldbemorepatient.(4)Ifsheshouldknowthetruth,shewouldbegreatlydepressed.

should(oughttodo)will\would表意愿Dowhatyouwill.表请求Wouldyouopenthewindow,please?表习惯倾向性“就是、总是”Thedoorwon’topen.表习惯特征过去常常Whenhewasyoung,hewouldsmoke.Heusedtoliveinthecountry.need\dare(即是情态动词也是实义动词)--NeedItellhimeverythingthatishappenedtohisparents?DoIneedtohandinthepaper?Youdidn'tneedtohandinthepaper.Youneedn’thavehandedinthepaper.Idaresay.我认为。Dareyougooutalone?Doyoudaretogooutalone