虚拟语气公式一览表

1虚拟语气用于非真实性条件句知识总结一虚拟条件句在主从复合句谓语动词的对应关系时间If条件从句主句与现在事实相反If+S从+V-ed/wereS主+would/could/should/might+V原形与过去事实相反If+S从+haddoneS主+would/could/should//might+havedone与将来事实相反1If+S从+V-ed/were2If+S从+should+V原形3If+S从+wereto+V原形S主+would/could/should/might+V原形二虚拟条件句错综时间的对相应关系错综时间(时间交错)If条件句的谓语动词主句谓语动词If+S从+V-ed/were(与现在事实相反)S主+wouldhavedone(过去)If+S从+haddone(与过去事实相反)S主+would/could/should/might+V(现在)三虚拟条件句在名词性从句的对相应关系1主语从句主句形式从句形式①Itisa/an+n②Itis+adj.③Itis/was+V-edn.,adj.,v-ed是表示建议、命令、要求、惊异...that+S从+should+V原形注意事项should可以省略,但是不能用would2.宾语从句①普通型主句形式从句形式S主+insist/order/suggest/advise/require+thatS从+should+V原形注意事项should可以省略,但不能用would②wish型时间主句形式主句谓语动词现在S主+wish+thatS从+were/V-ed过去S从+had+done或者S从+could+havedone将来S从+could/might/would+V(主句主语和从句主语不同)3.同位语从句4.表语从句主句形式从句形式S主+V+N.that+S+should+V原形(同位名词是表示建议、命令、要求、惊异等意思的名词)公式：TheN.+be+that+S从+should+V(原形)主语N.是表示建议、命令、要求、惊异等意思的名词2四虚拟条件句在状语从句的对相应关系五．虚拟语气其他类型1.Itistime…型类型从句形式ItistimethatItishightimethatItisabouttimethatS从+were/V-edS从+should(不可省略)+V原形2.ifonly型(多为感叹句)时间形式现在没有实现的愿望S+were/V-ed过去没有实现的愿望S+haddone将来没有可能实现的愿望S+would+V原形3.倒装句正常语序倒装语序If+S从+were…Were+S从…If+S从+haddone…Had+S从+done…If+S从+should+V原形Should+S从+V原形4.wouldrather型时间主句形式从句形式现在/未来S主+wouldrather/wouldsooner/wouldassoon/wouldprefer+thatS从+V-ed/were…过去S从+haddone…5.含蓄条件句（介词短语）类型时间形式介词+短语现在/未来S+should/would/could/might+V原形过去S+would/should/+have+done常见介词but,or,butfor,without,otherwise…类型连接词时间主句形式从句形式让步evenifeventhough现在、将来S主+should+doS从+were/V-ed过去S主+should+havedoneS从+haddone方式asifasthough现在S主+V主+O主S从+were/V-ed过去S从+haddone将来S从+should+do目的lestincaseforfearthat将来S主+V主+O主S从+should+do