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1、虚拟语气Subjunctivemood名词性从句其它状语从句结束放映简单句简单句中的虚拟语气情态动词的过去式用于现在时态时（表示说话人的礼貌、委婉的语气）Wouldyoubekindenoughtoshowmethewaytothepostoffice?Itwouldbebetterforyounottostayuptoolate.表祝愿。1、“may+动词原形”表示祝愿⑴、Maygoodluckbeyours!祝你好运！⑵、Mayyoubehappy!祝你快乐！⑶、Mayyoudoevenbetter!祝你
2、取得更大成就！⑷、Mayyouhaveagoodtime.祝愿你玩的痛快。⑸、Maythefriendshipbetweenuslastlong.2、用动词原形。(1).Longlivethepeople!人民万岁！(2).Haveagoodjourney!祝愿你旅途愉快！状语从句中虚拟语气if非真实条件句asif/asthough让步状语从句、表语从句Incase/forfearthat/lest非真实条件句的虚拟语气(if条件句):假设不可能或不大可能发生或实现条件从句结果主句与现在事实 相反If+主语+
3、pasttense,were主语+would/should/ could/mightdo与过去事实 相反If+主语+haddone主语+would/should/could/mighthavedone与将来事实 可能相反If+主语+did/shoulddo/weretodo主语+would/should/ could/mightdo与现在事实相反IfIwereyou,Iwouldaskourteacherforadvice.Iftheroomwerelarger,wewouldholdthepartyther
4、e.与过去事实相反IfIhadn’ttakenthewrongbus,Iwouldn’thavemissedthefilm.与将来事实可能相反IfIhadenoughmoneynextmonth,Iwouldbuyanew Englishdictionary.IfIshouldbegivenmoretime,Iwouldrevisemyessayandhaveittyped.Ifheweretoleavetoday,hewouldgettherebyFriday.非真实条件句的虚拟语气(if条件句)错综时间的
5、非真实条件句的虚拟语气(if条件句)混合/错综时间的条件句/主句(主句和从句谓语动词的动作发生在不同时间)Iftheyhadinvitedme,Iwouldgowiththemnow.Ifyouwereinbetterhealth,wewouldhaveallowedyoutogo.无主句的条件句(语气）IfonlyIhadbeenmorecareful!Ifonlyhewerehere省略if的倒装条件句的虚拟语气省略if的倒装条件句：从句中出现were,had,should时，可省略if,把were,ha
6、d,should提到主语前。Werewetodotheworkagain,wewoulddosomeotherway.Shouldtherebeanytroublewiththecomputer,Iwouldturntomyfriendforhelp.Haditnotbeenforyourhelp,wewouldnothaveachievedsomuch.含蓄条件句的虚拟语气含蓄条件句：不是用if条件句，而是由介词短语without,butfor,,intheabsenceof…;连词but,or,butth
7、at;副词otherwise或上下文来表示某中假设的情况。Butfor(Without)thestorm,theshipwouldhavearrivedearlier.Onthatcondition,Iwouldhavedonethesame.Intheabsenceofgravity,therewouldbenoairaroundtheearth.Sallycan’thavewrittentome,orIwouldhavegottheletterbynow.Butthat（要不是）hecametohelpm
8、e,Icouldnothavesucceeded.非真实条件句中的虚拟语气1)虚拟条件句中be动词用were:IfIwereyou,Iwouldaccepthisoffer.2）Should的用法：主句中第一人称用should,其他人称用would；从句中，表与将来事实相反时，任何人称都用should,不可用wouldIfitshouldraintomorrow,whatwouldyoudo?asi
