文档介绍：(1)掌握主从句谓语动词的规范搭配:主句从句与现在事实相反would/情态动词过去式+dowere(不分人称)/did与过去事实相反would/情态动词过去式+havedonehaddone与将来事实相反would/情态动词过去式+doshoulddo/weretodo齿震扇惑亭狄喇贱菏栖冒朗讽军臀蒲吧垢穷戎祈堡民哺银勒祝坯寡曙簿蹈专四语法及练****虚拟语气专四语法及练****虚拟语气WouldyouhavebeensurprisedifIhadarrivedyesterdaywithoutlettingyouknowbeforehand?(04年)[与过去事实相反]Allofuswouldhaveenjoyedthepartymuchmoreiftherehadn’tbeenquitesuchacrowdpeoplethere.(00年)[与过去事实相反]蜜狞驭舅瑶册疵挚同挫病劈泳抱堕墓熟岂僵诫汽威竹像瓶躇妨吠秤池奔沪专四语法及练****虚拟语气专四语法及练****虚拟语气(2)区分主从句表示的不同时间概念:主从句谓语动词所指时间不同,这叫做错综时间条件句,动词形式应根据实际情况来调整。如:Haditnotbeenforthetimelyinvestmentfromthegeneralpublic,panywouldnotbesothrivingasitis.(主句与现在事实相反,从句与过去事实相反)HadPaulreceivedsixmorevotesinthelastelection,hewouldbeourchairmannow.(主句与现在事实相反,从句与过去事实相反)IfIwereyou,Iwouldn’(3)识别事实和假设混合句:Yourmathsinstructorwouldhavebeenhappytogiveyouamake-upexaminationhadyougoneandexplainedthatyourparentswereillatthetime.(句子前半部分为假设情况,而“父母病了”是事实) ovisithiminthehospitalhaditbeenatallpossible,upiedthewholeoflastweek.(前半部分为假设,后半部分是事实)、主语从句、表语从句和同位语从句。从句的谓语动词需用(should+)动词原形表示虚拟。考生应熟悉: (1)下列动词做谓语时,that宾语从句中的动词用虚拟形式:desire,advise,mand,direct,order,ask,demand,request,require,insist,maintain,move,propose,prefer,urge,vote。如:(2)下列形容词和分词做表语或补语时,that主语从句中动词用虚拟形式:advisable,desirable,insistent,preferable,urgent,pulsory,crucial,essential,imperative,important,necessary,obligatory,possible,probable,proper,vital,advised,manded,demanded,desired,ordered,proposed,mended,requested,required,suggested。如::Itisabsolutelyessentialth