虛擬語氣用法匯一、虛擬語氣在條件句中EGIFIHADTIME,IWOULDATTENDTHEMEETINGIFHEHADHURRIED,HECOULDHAVECAUGHTTHETRAINIFIWERETOGOABROAD,IWOULDGOTOAMERICA注意虛擬語氣中的省略在條件句中，可省略IF，把WERE,HAD,SHOULD提到句首，變?yōu)榈寡b句式IFIWEREATSCHOOLAGAIN,IWOULDSTUDYHARDERWEREIATSCHOOLAGAIN,IWOULDSTUDYHARDERIFYOUHADCOMEEARLIER,YOUWOULDHAVEMETHIMHADYOUCOMEEARLIER,YOUWOULDHAVEMETHIMIFITSHOULDRAINTOMORROW,WEWOULDNOTGOCLIMBINGSHOULDITRAINTOMORROW,WEWOULDNOTGOCLIMBING二、虛擬語氣在名詞從句中的運用（1）用于賓語從句1、用于WISH后面的賓語從句中。一般用虛擬語氣，表示一種不可能實現(xiàn)的愿望。其謂語動詞形式為表現(xiàn)在過去時表過去過去完成時表將來WOULD,MIGHT,COULD動詞原形IWISHTHATIWEREABIRDIWISHTHATIHADSEENTHEFILMLASTNIGHTIWISHTHATIWOULD/COULDGO2、用于表示命令、建議、要求等一類詞后面的賓語從句中謂語動詞用（SHOULD）動詞原形。INSIST,ORDER,COMMAND,SUGGEST,ADVISE,PROPOSE,REQUIRE,REQUEST,DEMAND,DESIREETCWESUGGESTEDTHATTHEMEETINGSHOULDBEPUTOFFTHEYINSISTEDTHATTHEBOYSHOULDGOWITHTHEM注意SUGGEST當(dāng)表示“暗示、表明“講時，INSIST表示“堅持認(rèn)為”之意時，應(yīng)用陳述語氣。（2）用于表語從句和同位語從句表語和同位語從句中要用“（SHOULD）動詞原形”，SHOULD可以省略SUGGESTION/PROPOSAL/ORDER/PLAN/ADVICE/IDEA/REQUESTMYIDEAISTHATWESHOULDTHINKITOVERBEFOREACCEPTINGITMYSUGGESTIONTHATWESHOULDHAVEAMEETINGHASBEENACCEPTEDBYOTHERSWEALLAGREETOTHATSUGGESTIONTHATTHEMEETINGSHOULDBEPUTOFF（3）用于主語從句1、ITISIMPORTANTNECESSARY,STRANGE,NATURALTHAT，THAT后用（SHOULD）動詞原形ITSNECESSARYTHATWESHOULDHAVEAWALKNOW我們有必要出去散散步。ITSNATURALTHATSHESHOULDDOSO她這樣做是很自然的。ITSIMPORTANTTHATWESHOULDTAKEGOODCAREOFTHEPATIENT重要的是我們要照顧好病人。2、ITISDEMANDED/SUGGESTED/ORDERED/REQUIRED，THAT后用（SHOULD）動詞原形ITISDEMANDEDTHATWESHOULDWORKOUTAPLAN我們被要求制定出一個計劃。3、ITISAPITY/ASHAME/NOWONDERTHAT，THAT后用（SHOULD）動詞原形ITSAPITYTHATYOUSHOULDMISSAGOODCHANCE三、虛擬語氣在其他從句中1ITISHIGH/ABOUTTIMETHAT從句中的謂語動詞用過去式或SHOULD動詞原形，SHOULD不能省略ITISHIGHTIMETHATYOUWENT/SHOULDGOTOSCHOOL2IFONLY引導(dǎo)的感嘆句（要是該有多好啊表示現(xiàn)在的情況,用過去式如果是過去的情況,用過去完成時態(tài)IFONLYIKNEWTHEANSWERIFONLYIHADSEENTHEFILMYESTERDAY3WOULDRATHER從句表示現(xiàn)在的情況,用過去式如果是過去的情況,用過去完成時態(tài)IWOULDRATHERYOUTOLDMETHETRUTHIWOULDRATHERYOUHADGONETHERELASTSUNDAY4ASIFASTHOUGH看起來表示與現(xiàn)在事實相反，用過去式；與過去事實相反用過去完成式HADDONEHETREATS/TREATEDTHEBOYASIFHEWEREHISOWNSONHESPEAKS/SPOKEASIFHEHADKNOWNABOUTIT5EVENIFEVENTHOUGH即使表示與現(xiàn)在事實相反，用過去式；與過去事實相反用過去完成式HADDONEEVENIFHEWEREHERE,HECOULDNOTSOLVETHEPROBLEMEVENIFIHADBEENBUSYTHEN,IWOULDHAVEHELPEDYOU6其他BUTFOR/BUTTHATIFITWERENOTFOR,IFITHADNOTBEENFOR（要不是），WITHOUT（沒有），OTHERWISE，OR（否則），表示現(xiàn)在的情況,用過去式如果是過去的情況,用過去完成時態(tài)BUTFORTHEIRHELP,IWOULDNOTHAVEFINISHEDTHETASK要不是他幫忙，我完不成任務(wù)的。BUTFORWATERANDAIR,NOTHINGCOULDLIVEINTHEWORLD要不是有水和空氣，世界上沒有什么能生存。WHATWOULDIHAVEDONEWITHOUTYOU沒你我該怎么辦啊HEWASVERYBUSYOTHERWISE,HEWOULDHAVECOMETOTHEPARTY他很忙，否則他回來參加派對的LEST（以免；免得），INCASE（以防）和FORFEARTHAT（生怕，唯恐）謂語部分用（SHOULD）動詞原形KEEPQUIETINCASEYOU（SHOULD）INTERRUPTHIMWHENHEISBUSY要保持安靜，以防打擾