高考英語 二輪專題復(fù)習(xí)情態(tài)動詞課件

情態(tài)動詞的用法一、作用：表推測

時(shí)態(tài)

句式

現(xiàn)在，將來

過去

肯定句否定句或疑問句must+do肯定may\might+do不確定must\may\might+havedonecan\couldnot+docan\couldnot+havedone

特殊用法：有時(shí)可用于肯定推測的情態(tài)動詞還有①can\could(表理論上的可能性)“有的時(shí)候會”②should(表有一定根據(jù)的推測)“理所應(yīng)當(dāng)會”▲Don’tworry.Ihavejustsentanambulancetoyourlocation.They___bethereanysecond.A.couldB.mightC.wouldD.should▲Peter___bereallydifficultattimeseventhoughheisanicepersoningeneral.A.shallB.shouldC.canD.mustAC③may\mightnot(語氣弱于can\could)“也許不”▲--Whydidn’tAlexattendthepartyyesterdayevening?--He___nothavewantedtoseeme.shouldB.mightC.couldD.would▲Liza___wellnotwanttogoonthetrip–shehatestraveling.A.willB.canC.mustD.mayBD▲Hemustbereading,______he?▲Youmustdoityourself,_____you?▲Hemusthavegoneoverthearticle,_______he?▲Itmusthaverainedlastnight,________it?表猜測語氣的反意疑問句的構(gòu)成isn’tdon’thasn’tdidn’tcan\could(一般的能力)①表示一般的能力（聯(lián)想：beabletodo特殊能力、克服困難達(dá)到、將來具備的能力）二、分類介紹②表許可--CouldIcomehereagaintomorrow?--Yes,__________.--No,___________.③could(not)havedone“本可以做卻沒做”We_______________(go)thereonfoot.Ataxiwasn’tnecessaryatall.youcan.youcan’tcouldhavegonemay\might①表許可，譯“可以”--May\MightIuseyourphone?--Yes,__________________.--No,______________________.②may+主語+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.你最好留在這里過夜。youmay\pleaseyoumaynot\pleasenotmaywellnotrecognizemightaswellstaymust\haveto①“必須”must主觀看法havetodo客觀需要Idon’tliketostayhereanylonger,I________leavenowItistoolate.I____________leavenow.--Mustwesendinourplanthisweek?--Yes,___________________.--No,you___________________________.musthavetoyoumust

needn’t\don’thaveto

★mustnot“不許、禁止”表示絕對禁止，不可用來由must提出的問句。You_________takethebooksoutofthereadingroom.

mustn’t

②WhymustitrainonSunday?ThecarmustbreakdownjustwhenIwasabouttostart.③

Allmanmustdie.④Itmustberainingoutside.翻譯must非要、偏要必然一定①用于第一人稱表將來。IshallgotoworkafterIhavefinishedschool.②用于一、三人稱疑問句，表征求對方意見或向?qū)Ψ秸埱蟆?-Shallhecomein?--Comein,please.③用于二、三人稱陳述句，表示保證、承諾、威脅、警告。Youshallbepunishedifyouinsistondoingitthisway.④用于所有人稱，表規(guī)章、法令等“必須”Eachcompetitorshallwearanumber.shall(1)表示有一定根據(jù)的推測、推論。“應(yīng)該會”Thelightisonnow,theyshouldbehere.(2)說話人的感情。如驚奇、憤怒、失望等、“竟然”Youcan’timaginethatwell-behavedgentlemanshouldbesorudetoalady.(3)表示義務(wù)、責(zé)任或勸告、建議、命令等?！皯?yīng)該”Youshouldbemorepatient.(4)Ifsheshouldknowthetruth,shewouldbegreatlydepressed.

should(oughttodo)will\would表意愿Dowhatyouwill.表請求Wouldyouopenthewindow,please?表習(xí)慣傾向性“就是、總是”Thedoorwon’topen.表習(xí)慣特征過去常常Whenhewasyoung,hewouldsmoke.Heusedtoliveinthecountry.need\dare(即是情態(tài)動詞也是實(shí)義動詞)--NeedItellhimeverythingthatishappenedtohisparents?DoIneedtohandinthepaper?Youdidn'tneedtohandinthepaper.Youneedn’thavehandedinthepaper.Idaresay.我認(rèn)為。Dareyougooutalone?Doyoudaretogooutalone