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1虚拟语气的几种特殊用法省掉if的条件从句结构：Hadyouaskedme,Iwouldhavetoldyou.(=Ifyouhadaskedme,…)2.有时虚拟条件不用条件从句而用不定式、分词、介词、名词、连接词或定语从句来表示，如：Atruefriendwouldnotdosuchathing.(=Ifhewereatruefriend,he...)(=Iftherewerenowater,…)(=Ifyouhadn’thelpedme,…)例句：Withoutyouradvice,ourmeetingwouldn’thavebeensosuccessfully.[过去]（=可转换为：Iftherehadn’tbeenyouradvice,we…）Yournotesarealmostillegible(难以辨认的).Notestypedoutwouldbealoteasiertoread.[将来](=可转换为：Ifthenoteshadbeentypedout,itwouldbealoteasiertoread.)IshouldhavegonetoseeDr.Smithandhemighthavecuredmeofthedisease.[过去](=可转换为：IfhehavegonetoseeDr.Smith,he..)3.有时条件从句中的动作和结果从句中的动作发生的时间不一致，如：Ifhehadfollowedthedoctor’sadvice,hewouldbequiteallrightnow.IfIwereyou,Iwouldhavegonehome.五、虚拟语气的其他用法1、Suggest,advise等动词之后宾语从句须用虚拟语气，其句子结构如下：suggest,advise,recommend,demand,require,insist,urge,request,order,+that…(should)+动词原形devide,ask,move,propose等注意：在此结构中that不可省略；should省不省均可。Hesuggestedthatthey(should)stopsmoking.上述动词的名词形式出现时，that引导的从句仍用虚拟语气。Hemadearequestthatthey(should)stopsmoking.如果that引导的从句所表达的内容是事实，也可用陈述语气。Heinsiststhatheisright.2、Itis(was)+necessary,apity等+that引导的从句须用虚拟语气，其句子结构如下：imperative,advisable,动词完成式Itis(was)+important,natural,necessary,+that…(should)+essential,strange,等动词原形Itisimportantthatyou(should)followthedoctor’sorders.Itisrightthatyoushouldhavedoneyourhomework.3、wish的用法动词过去式或were—与现在事实相反主语+wish(that)+主语+动词过去完成式—与过去事实相反助动词过去试+动词原形—与将来事实相反IwishIwereapopsinger.(=IamsorryIamnotapopsinger..)IwishIhadneverstoppedteaching.(=IamsorryIstoppedteaching.)Iwishthey’dletusgetsomesleep.注意：wish与hope接宾语从句的区别在于：hope表示一般可以实现的希望，宾语从句用陈述语气。wish表示很难或不大可能实现的希望,宾语从句用虚拟语气。试比较：2（1）Wehopetheywillcome,(Wedon’tknowiftheycancome.)（2）Wewishtheycouldcome,(Weknowtheyarenotcoming.)4、asif,asthough,would(had)rather(that)引导的从句须用虚拟语气，如：Heactsasifnothinghadhappened.Iwouldratheryoudidn’ttellhim.5、It’s(high)timethat…+动词过去式或should+动词原形，如：It’stime(that)youhadahaircut.It’shightime(that)wetooksomeaction.虚拟语气专项练习题(1).IfI___you,Iwouldgobyplane.Flyingismuchfaster.A.beB.wasC.wereD.am(2).IdonotthinkthosepeoplearereallyEnglish.Iftheywere,they____speakwithFrenchaccents.A.don'tB.willnotC.mustn'tD.wouldn't(3)_____today,wouldwebeabletogettherebyTuesday?A.WereweleavingB.IfweleaveC.WouldweleaveD.Werewetoleave(4).IfJone____tomorrow,whatwouldyoudo?A.werenottocomeB.willnotcomeC.wouldnotcomeD.hadnotcome(5).“Shedidn'taskme,soIdidn'thelpher?”“Youmeantosay_____,youwould'vehelpedher?”A.ifsheaskedyouB.ifsheweretoaskyouC.hadsheaskedyouC.wereshetoaskyou(6).Theytooktheinjuredstraighttothehospital.Otherwisesomeofthem_____.A.mighthavediedB.mightdieC.woulddieD.coulddie(7).Iftheyhadknownhim,_____tohim?A.wouldtheyhavetalkedB.wouldtheytalkC.hadtheytalkedD.theywouldtalk(8).IfIlivedinthecity,I____travelincrowededbuses,butI_____toseelotsoffilms.A.shallhaveto/shallbeableB.shallhaveto/amableC.wouldhaveto/wereableD.wouldhaveto/wouldbeable(9).Iwouldhavegonetotheconcert,ifI_____time.A.hadhadB.havehadC.hadD.wouldhavehad(10)._____Iknowit,Iwouldhavetoldyou.A.HaveB.IfC.HadD.Having(11)._____yourhelp,Iwouldnothavesucceeded.A.BecauseB.BecauseofC.ButD.Butfor(12).“WhatdidMrSmithsayabouthiscareer?”“Onlythatifhe____amillionaire,hewouldhavefewerworries.”A.didnotbecomeB.hadnotbecomeC.doesnotbecomeD.hasnotbecome(13).“Whydidn'tyouhelphim?”“Iwouldhave____Ididn'thavethemoney.”A.stillB.butC.otherwiseD.or(14).“WhoshouldgotoseeLiYing?Heisilltoday.”“IsuggestWangHong_____.”A.goesB.wouldgoC.goD.went3(15).Thehousemasterwasstrict.Herequestedthatwe_____televisiononweeknights.A.notwatchB.mustnottowatchC.notbewatchingD.havenotwatch(16).Ican'tspeakJapanese,butIdowishI____.A.canB.couldC.hadD.speak(17).“Areyouenjoyingyourstayhere?’“Yes,verymuch.IwishI_____havetoleavesosoon.”A.won'tB.don'tC.mustn'tD.didn't(18).“Whatwillyoudoduringthesummerholidays?”“Idon'tknow,butit'sabouttime_____onsomething.”A.I'mdecidingB.I'lldecideC.IdecidedD.I'ddecided(19).I'dratheryou_____anythingaboutitforthetimebeing.A.sayB.didn'tsayC.don'tsayD.notsay(20).“Whydoyouhavetobethereatsix?”“Theteacherdemandsthateveryone_____inhisseatatsix.”A.wouldbeB.canbeC.beD.willbe(21).Hemakesanoteoftheassignmentlesthe_____it.A.forgetsB.forgetC.willforgetD.willnotforget(22).“howdoesthelibrarianact?”“Heactsasifhe_____awalkingdictionary.”A.wereB.beC.isD.hasbeen(23).Thereisalawthatdrunkendrivers_____severelypunished.A.wereB.areC.beD.willbe(24).Iwishyou______interruptwhenI'mtalkingonthephone.A.willnotB.wouldnotC.donotD.didnot(25).Henrytalkstohisdogasifit____him.A.understandsB.understoodC.understandD.wouldunderstand(26).Jefflookedasifhe_____aghost.A.sawB.hasseenC.hadseenD.wouldsee(27).Givehermybestregards,________.A.shouldyouseehertodayB.ifyousawhertodayC.ifyouwouldseehertodayD.shouldyouhaveseenhertoday(28).Therewasasuggestionbytheteachersthatthemeeting______postponedforaweek.A.hadbeenB.wouldbeC.wasD.shouldbe(29).Itishighlydesirablethateveryeffort______toreducepollutioninBeijing.A.wasmadeB.bemadeC.willbemadeD.wouldbemade(30).Themanagerwouldratherthathiswife_____workinthesameofficeashedose.A.doesnotB.didnotC.wouldnotD.willnot(31).Theteacherinsistedthatweal