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1、高中英语网www.ttyingyu.com虚拟语气英语动词有四种语气：陈述语气、祈使语气、疑问语气和虚拟语气。一．定义：虚拟语气是一种动词形式，表示说话人的一种愿望，假设，怀疑，猜测，建议等含义。虚拟语气所表示的含义不是客观存在的事实。二．虚拟语气在非真实条件句中1.概念真实条件句：表示现实或可能变为现实的条件。非真实条件句：表示非现实的，或不可能，或不大可能变为现实的条件。e.g.①Theydon’thaveameetingifthereisnothingtodiscuss.②IfIhadtime,IwouldstudyGerman.2.形式虚拟条件句主句与现在事实相反动词过去式（be
2、动词用were）should/would/could/might+do与过去事实相反had+doneshould/would/could/might+have+done与将来事实相反①动词过去式②should+do③wereto+doshould/would/could/might+doe.g.①Ifyouhadgotupearlier,youcouldhavecaughtthetrain.②Ifhecametomorrow,wecouldaskhim.练习：①Ifyou＿＿＿＿(take)myadvice,you＿＿＿＿＿＿(notfail)intheexamslastterm.②If
3、it＿＿＿＿(rain)tomorrow,thesportsmeeting＿＿＿＿＿＿(putoff).③Ifeveryone＿＿＿＿(know)firstaid,manylives＿＿＿＿＿＿(save).3.重点1）如条件句中有were,had,should,可把if省略掉，把were,had,should提前，变为倒装句式。e.g.Ifwehadmadeagreateffort,wemighthavesucceeded.→Hadwemadeagreateffort,wemighthavesucceeded.▲注意：若条件句的谓语动词是否定形式时，不能用动词的缩略形式。e.g.Ifi
4、tweren’tfortheexpense,Iwouldgoabroadnow.→Wereitnotfortheexpense,Iwouldgoabroadnow.2)有些句子主句谓语和从句谓语表示的动作在时间上并不一致，这类句子称为“错综时间条件句”。①Ifyouhadstudiedhardbefore,youwouldbeacollegestudentnow.②Ifhehadn’tfollowedmyadvice,hewouldn’tdoitmuchbetterlikethis.高中英语辅导网www.yingyufudao.com高中英语网www.ttyingyu.com3）含蓄条件
5、句指句中没有明显的虚拟条件句，而是利用其它手段来暗示存在的虚拟条件，如butfor,with,without,otherwise,but等。①Butforyourhelp,wecouldn’thavefinishedthework.=Ifithadnotbeenforyourhelp,……②Imighthavegivenyourmorehelp,butIwastoobusy.③Suchathingwouldn’thavehappenedelsewhere.④Iwasillthatday.Otherwise,Iwouldhavetakenpartinthemeeting.4）省去主句的条件
6、句常用ifonly引导，表示一种不可能实现的愿望。谓语形式：谓语用过去式（与现在事实相反）谓语用haddone（与过去事实相反）谓语用could/would/might+do（与将来事实相反）e.g.①Ifonlyhewerehere.②Ifonlytherainwouldstop.三．虚拟语气其它用法1.用于宾语从句中1）wish后的宾语从句用虚拟语气，表示一种不可能实现的愿望。谓语形式：过去式（宾语从句动作与wish同时）had+done(宾语从句动作先于wish)could/would/might+do（宾语从句动作后于wish）e.g.①Iwish(that)Iwereaflyi
7、ngbird.②Iwish(that)Ihadmetthatfilmstaryesterday.③Iwishhewouldtryagain.2)用于表示建议、命令等词后的宾语从句中，如demand,order,require,insist,suggest,propose,advise等。宾语从句的虚拟语气结构为：(should)+doe.g.Heorderedthattheboy(should)gowithhim.▲注意：当sugg
