if-条件状语从句中的虚拟语气

1.if条件状语从句中的虚拟语气一、if条件状语从句中表示对将来、过去、现在的虚拟1.Ifsheinvitesmetomorrow,Ishallgototheparty.（真实条件句）如果她明天邀请我参加聚会,我就去.Ifsheinvitedme,Ishouldgototheparty.[虚拟条件句](说话人认为邀请的可能性较小或不可能)Shewillprobablynotinviteme,soIshallnotgototheparty.2.Ifshehadinvitedmeyesterday,Ishouldhavegonetotheparty.假如她昨天邀请我参加聚会,我就去了.Shedidn`tinvitemeyesterday,soIdidn`tgototheparty.她昨天没有邀请我参加聚会,因此我没有去.3.Ifsheshouldinvitemetomorrow,Ishouldgototheparty.Ifsheweretoinvitemetomorrow,Ishouldgototheparty.Ifsheinvitedmetomorrow,Ishouldgototheparty.1.对现在的虚拟条件状语从句的动词形式主句的动词形式If+主语+动词过去式(be的过去式用were)I(we)should+动词原形主语+would(might,could)+动词原形IfIwereyou,IshouldstudyEnglish.(Iamnotyou,soIshallnotstudyEnglish.)IfIhadtime,Iwouldattendthewedding.(Idoesnothavetime,soIwillnotattendthewedding.)Iftheydidn`ttakephysicalexerciseseveryday,theywouldn`tbesohealthy.(Theytakephysicalexerciseseveryday,sotheyareveryhealthy.)2.对过去的虚拟条件状语从句的动词形式主句的动词形式If+主语+had+过去分词I(we)should+have+过去分词主语+would(might,could)+have+过去分词Ifyouhadtakenmyadvice,youwouldn`thavefailedintheexamination.(Youdidnottakemyadvice,soyouhavefailedintheexamination.)3.对将来的虚拟条件状语从句的动词形式(三种)主句的动词形式⑴If+主语+动词过去式(be的过去式用were),通常要与一个表示将来的时间状语连用(tomorrow)⑵If+主语(任何人称和数)+should+动词原形⑶If+主语(任何人称和数)+were+to动词原形I(we)should+动词原形或主语(任何人称)+would(might,could)+动词原形Ifitrainedtomorrow,ourpicnicwouldbeputoff.Ifitshouldraintomorrow,ourpicnicwouldbeputoff.Ifitweretoraintomorrow,ourpicnicwouldbeputoff.