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1、高二英语Module6Unit3Grammar–1Unrealconditionals虚拟语气1.条件从句和主句中的虚拟语气时间从句主句与现在事实相反If+主语+动词的过去式(be---were)主语+should/would/could/might+动词原形与过去事实相反If+主语+had+过去分词主语+should/would/could/might+have+过去分词与将来事实相反If+主语+wereto/(should)+动词原形主语+should/would/could/might+动词原形当从句的if省略时,从句要倒装
2、:IfIwereyou,Iwouldnotdothat.WereIyou,Iwouldnotdothat.在ifI/he/she/it之后,可用were代替was。两者在意义上没有区别,但是were更为正式,特别是在称述心存怀疑的事情时:Ifshewereready,wewouldgo.在与将来事实相反的条件从句中,我们可以用wereto或should+do来表示:IfIweretofail/shouldfailmyEnglishtest,Iwouldhavetotakeitagainattheendoftheterm.Ifhes
3、houldcome/weretocometomorrow,Iwouldtalktohimaboutit.Readthedialogueatpage40andfillineachblankwiththecorrectformoftheverbinbrackets.IfIshouldmeether,Iwouldtellher.=ShouldImeether,Iwouldtellher.IfIwereinyourposition,Iwoulddoitbetter.虚拟条件句中的省略与倒装=WereIinyourposition,Iwou
4、lddoitbetter.Iftheyhadmadepreparations,theywouldhavesucceeded.=Hadtheymadepreparations,theywouldhavesucceeded.有时非真实条件句中,主句谓语动词所表示的动作和条件从句中谓语动词所表示的动作并不同时发生.这时动词的形式并不完全按照上述表格来进行,而需要按照各自的时间来调整,这样的句子就叫错综时间条件句。错综时间条件句Ifyouhadfollowedthedoctor’sadvice,thenyouwouldbeallright
5、now.IfIhadn’tfinishedmycompositionbynow,Iwouldbeworkingonittomorrow.Ifshehadpreparedwellforherlessonsyesterday,shewouldn’thavesomanydifficultiesnow.有时一个假设的情况并不用条件从句表示,而用其它方式来表示,这样的句子叫含蓄条件句。用with,without等介词短语或分词短语或者独立主格结构来代替条件从句。含蓄条件句Wemighthavediedwithoutyourhelp.=Wem
6、ighthavediedifyouhadn’thelpedus.Havingknownintime,wecouldhavestoppedit.=Ifwe’dknownintime,wecouldstoppedit.在条件从句中除最常见的连词之外,还有下列连词:otherwise;incase;butfor;onconditionthat;unless;suppose/supposing(that);solongas;provided/providing(that)2.用相当于if的其他连词表示虚拟结构Iwasbusylastwee
7、k,otherwiseIwouldhavecometoseeyou.IwouldhavecometoseeyoubutIwasbusylastweek.IfIhadn’tbeenbusylastweekIwouldhavecometoseeyou.Iwouldhavecalledyou,butI_________yourtelephonenumber.Iforgotyourtelephonenumber,otherwise/or_____________________.IfIhadn’tforgottenyourtelephon
8、enumber,_____________________.IwouldhavecalledyouIwouldhavecalledyouforgotIwouldhavegivenyoumoremoney,_________Iwaspoorthen.
