虚拟语气虚拟语气语气英语的动词一般可带有三种不同的语气：陈述语气，祈使语气和虚拟语气。虚拟语气虚拟语气概念虚拟语气表示说话人的主观愿望或假想，是一种与事实相反的愿望。虚拟语气虚拟语气虚拟语气是一种特殊的动词形式，一是用来表示说话人所说的话不是一个事实，而是一种假设、猜测、怀疑等(在条件从句中或让步状语从句中)；二是表示说话人的愿望、要求、命令、建议等(在主语从句、宾语从句、表语从句、同位语从句中)。虚拟语气的概念考点1.if虚拟条件从句的基本用法虚拟条件句主句与现在事实相反的假设与过去相反的假设与将来相反的假设If+主语+动词的过去式（动词be用were)主语+would/shouldmight/could＋动词原形If+主语+had+过去分词主语+would/should/might/could＋havedone1、If+主语+动词过去式2、If+主语+wereto+动词原形3、If+主语+should+动词原形主+would/should/might/could＋动词原形虚拟语气1、与现在事实不一致，其句型为：If主语＋过去时，主语+could/would/might/should＋动词原形，IfIwereyou,Iwouldstudyhard.Ifitrained,Iwouldnotbeherenow.2、与过去事实不一致，句型为：If主语＋had＋过去分词，主语+could/would/might/should＋have＋过去分词，Ifthedoctorhadcomelastnight,theboywouldhavebeensaved.IfIhadnotstudiedhard,Iwouldhavefailedintheexamlastterm.虚拟语气3、与将来事实不一致，句型为：If主语＋过去式/should/wereto＋动词原形，主语＋would/should/might/could…＋动词原形，如：Ifitshouldraintomorrow,wewouldstayathome.IfIweretogotothemoononeday,Icouldseeitwithmyowneyes.虚拟语气4.错综时间条件句主句与从句的动作发生在不同的时间，主句从句谓语动词的虚拟语气形式因时间不同而不同，这种条件句叫做错综时间条件句。Ifithadrainedlastnight,itwouldbeverycoldtoday.（从句是过去，主句是现在）IfIwereyou,Iwouldhavegonetothetheaterthatevening.（从句是现在，主句是过去）Ifmygrandfatherwerealivenow,hewouldbe100nextyear.（从句是现在，主句是将来）虚拟语气考点2.省略if的虚拟条件句的用法在if虚拟条件句中如果从句谓语were/had/should时，可省去if,将were/had/should置于从句主语之前。例如：Hadthedoctorcomelastnight,theboywouldhavebeensaved.WereItogotothemoononeday,Iwouldseeitwithmyowneyes.Shoulditraintomorrow,wewouldstayathome.虚拟语气Attention：1.在虚拟语气的从句中，动词‘be’的过去时态通常用"were"，不用was。例如：IfIwereyou,Iwouldgotolookforhim.如果我是你，就会去找他。Ifhewerehere,everythingwouldbeallright.如果他在这儿，一切都会好的。虚拟语气2.Ifitwerenotfor...,主句用would/should/could/might+动词原形Ifithadnotbeenfor...,主句用would/should/could/might+havedone划线部分译为“要不是”Ifitwerenotforwater/Butforwater/Wereitnotforwater,noplantcouldgrow.Ifithadnotbeenforyourhelp/Butforyourhelp/Haditnotbeenforyourhelp,wewouldnothavesucceeded.虚拟语气(1)在句型“Itisimportant(necessary,strange,natural)that....”中，that后面的从句中的谓语动词用：should+动词原形Itisstrangethatheshouldleavewithouttellingus.1在主语从句中考点3.虚拟语气在名词性从句中的主要用法虚拟语气(2)在Itisdemanded/suggested/ordered/required….that-clause句型中从句用(should)+动词原形Itisdemandedthatweshouldworkoutaplan.(3)在Itisapity/ashame/nowonderthat…..句型中从句也常用(should)+动词原形It’sapitythatyou(should)missagoodchance.虚拟语气(1)表示命令、建议、要求的动词后的宾语从句中需用虚拟语气，基本句型：主语＋（should）＋动词原形.TominsistedMike(should)apologizetohisteacher,butMikeinsistedthathewasnotwrongatall.Herfacesuggestedthatshewasill,soIsuggestedthatshe(should)besenttohospitalatonce.2在宾语从句中注意：suggest当表示“暗示、表明”讲时，insist表示“坚持认为,坚持说”时，应用陈述...
