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1、虚拟语气详解（自用版）虚拟语气是一项语法难点，为了让学员们便于理解与记忆，我们把虚拟语气分成三大块来讨论：1．名词从句中的虚拟语气标志词+should+动词原形2．条件从句中的虚拟语气①三种基本态②倒装虚拟句③混时虚拟句④含蓄虚拟句⑤跳层虚拟句3．其它情形中的虚拟语气（wish/wouldrather/It’shightime…/Ifonly…/lest）一．三种基本形态（1）表虚拟的时间if从句谓语形式主句谓语形式现在：did/werewould(should,might,could)+do过去：haddone/had
2、beenwould(should/might/could)+havedone(been)将来：wereto/should+dowould(should,might,could)+do三种基本形态（2）（这是基础，建议牢记下面的例句，争取能脱口而出）与现在事实相反：IfIhadenoughmoney,Iwouldbuyabook.与过去事实相反：IfIhadhadenoughmoney,Iwouldhaveboughtabook.与将来事实相反：IfIweretohaveenoughmoney,Iwouldbuyabook
3、.IfIshouldhaveenoughmoney,Iwouldbuyabook.二、倒装虚拟句（只能与过去/将来事实相反，省去if，只有三种倒装形式）HadIhadenoughmoney,Iwouldhaveboughtabook.WereItohaveenoughmoney,Iwouldbuyabook.ShouldIhaveenoughmoney,Iwouldbuyabook.三、混合时间虚拟语气（主要是抓住时间状语）(对过去事实虚拟+对现在事实虚拟)IfIhadstudiedEnglishatschool,Ico
4、uldreadtheEnglishnovelnow.(对现在事实虚拟+对过去事实虚拟)Ifshewerenotsocareless,shewouldn’thavemadesuchamistake.四、含蓄虚拟句（在四级考试中目前还未出现此考点，但在阅读中常见） 3.虚拟语气用在主语从句中。在句型“Itisimportant(necessary,strange,natural等)that...”中，that后面的从句中的谓语动词用(should)+动词原形。 It'snecessarythatweshouldhavea
5、walknow.我们现在有必要出去散散步。WhatwouldIhavedonewithoutyou?Butfortheirhelp,Iwouldnothavefinishedthetask.Butthatthedoctorarrivedontimethatday,theywouldhavebeendead.Givenmoretime,Iwouldhavebeenabletofinishthetest.五、跳层虚拟句（即句子一半为虚拟，另一半为陈述语气；but前句用虚拟而or/otherwise后句用虚拟）(but)Hew
6、ouldputonweight,buthedoesn'teatmuch.(与现在事实相反)Hewouldhaveputonweight,buthedidn'teatmuch.(与过去事实相反)(or,orelse,otherwise)IforgetwhereIreadthearticle,orIwouldshowittoyounow.(与现在事实相反)Marycouldn'thavereceivedmyletter,otherwiseshewouldhaverepliedbeforenow.(与过去事实相反)六、名词从句
7、虚拟语气(1)ask,advise,beg,command,demand,decide,desire,insist,order,prefer,propose,require,recommend,request,suggest,urge等表示命令、要求、建议等含义的动词后的宾语从句中，谓语动词用(should)+动词原形,eg.Isuggest/suggestedthatwe(should)gotomorrow.名词从句虚拟语气(2)Itis+(形容词/过去分词/特定名词)+that的从句中，形容词主要是表示令人吃惊的、重
8、要的、必要的、关键的等词汇。形容词：astonishing,amazing,advisable,appropriate,crucial,desirable,essential,important,imperative,keen,necessary,natural,normal,odd,proper,preferabl
