高考英語二輪 情態(tài)動詞和虛擬語氣4課件.ppt

情態(tài)動詞和虛擬語氣 bybringenglish can couldmay mightwill wouldshall shouldmust needhaveto oughttocan t maynotmustn t needn tdon thavetoshouldn t shan tbeabletodare 情態(tài)動詞 1 can could表示能力hecanspeakenglishverywell hecoulddrawverywellwhenhewasfive 表示許可youcanusemycomputernow youcan teatinclass 表示請求canyoutellmethewaytothepostoffice couldyoushowmethewaytothebeihaipark 表示猜測generally sheisaquietgirl butsometimesshecanbetalkable someoneisknockingatthedoor whocanitbe itcan tbemr zhang hehasgoneabroad thehuntershavebeenlostfordays theycouldstarve 表示驚訝howcanshebelateforclass sheisalwaysontime 2 may might請求許可mayihavealookatyournewmobilephone 表示可能themanovertheremaybeyournewteacher hemightcomeherebytrainorbyair 3 will would表示意愿 傾向onrainydays shewillsitbythewindowandwatchtherainforhours hewaspoor buthewoulddressupasarichman 表示請求willyoupleasegiveyourseattotheoldlady wouldyouliketojoinusfordinner 4 shall用于第一人稱 表示將要ishallgowithyounexttime 用于第一人稱 表示征求意見shalliputthebookbackontheshelf shallwegooutforawalk 用于第二 三人稱 表示許諾 義務 規(guī)定 威脅youshallgetanewmobilephoneifyoupasstheexam everyoneshallwaitinlinewhentheybuytickets accordingtotheagreement theinterestshallbedividedequallyamongthethreeinvestors 5 should表示建議 應該 youshouldliedownandhavearest 表示猜測it sseveno clock mr lishouldbethere youhavepracticedalot youshouldn thaveanytroubleinpassingthetest 表示驚訝it ssurprisingthatsuchaprettygirlshouldbeathief 6 must表示必需wemustfinishourworkbynoon 表示猜測theremustbesomethingwrong 表示責怪 偏偏 非得 tom mustyouplaythepianoatthistime mycarmustbreakdownwheniwashurryingtowork 7 need表示需要 否定或疑問句 youneedn tgotoschooltoday 用作實意動詞youdon tneedtogotoschooltoday 8 haveto表示必需 不得不youhavetofinishyourworkbynoon 9 oughtto表示應該yououghttohandinyourhomeworkbeforeschoolisover 10 dare表示敢howdareyousaythattoyourmother shedaren tgooutinthedark hedarednotasktheteacherforhelp 用作實意動詞hedarestoswimacrosstheriverbyhimself doeshedaretoswimacrosstheriverbyhimself hedoesn tdaretoswimintheriver 注意各種否定式 1 can tican tplayanymusicalinstrument 不能 itcan tbepossible it ssorediculous 不可能 2 mustn tyoumustn tsmokeinpublicplaces 千萬別 3 maynotthatmaynotbetrue 可能不 4 needn t 沒必要 5 don thaveto 沒必要 6 shouldn t 不應該 情態(tài)動詞 havedone 1 musthavedone一定做過某事2 may might could not havedone可能 沒 做過某事3 can thavedone不可能做過某事4 should not havedone本 不 應該做某事5 needn thavedone本沒必要做某事6 ought not tohavedone本 不 應該做某事7 would not havedone本 不 會做某事 虛擬語氣 一 在條件句中的用法 1 ifiwereyou iwouldasktheteacherforadvice ifheknewthetruth hewouldtellyou 2 ifyouhadcomeearlier youwouldhavemetthefamousstar shewouldn thavebeensoangryifyouhadapologizedtoher 3 ifitweretosnowthisevening theywould should could mightnotgoout ifitshouldbreakdownwithinoneyear wewouldrepairitatourexpense ifyouwentthere iwould should could mightgowithyou 需要注意的問題 1 錯綜條件句ifyouhadfollowedmyadvice youwoulddoitbetternow ifiwereyou iwouldn thavemissedthefilmlastnight 2 倒裝句 省略if weresheolder shewoulddoit shouldhecome tellhimtoringmeup hadwetakenthetaxi wewouldn thavebeenlateforthemeeting 二 介詞短語等代替條件從句 withoutair therewouldbenolivingthings butforyourhelp wewouldn thavefinishedthetaskontime 三 根據(jù)上下文判定 1 iwouldhavecometoyourparty butiwastoobusylastnight 2 iwastoobusylastnight otherwiseiwouldhavecometoyourparty 3 youweredrivingtoocarelessly otherwiseyouwouldn tbeinhospitalnow 四 在其他從句中的虛擬語氣 1 iwishihadmyowncompany iwishiwouldtravelinspacesomeday iwishihadknownyouearlier 2 iwouldratheryoucameheretomorrow iwouldratherihadn tseenthefilm 3 hetalksasifhekneweverything hetalksasifhehadbeentothemoon 4 hesuggested ordered requested that should do 5 it