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1、外院英语专业四级语法串讲内部资料专四英语语法考点串讲之一虚拟语气一般说来,有下列几种考点需要考生注意(十考点及两备考点)考点1.与现在事实相反从句谓语动词用did(be用were),主句谓语动词would(should,could,might)+do;考点2.与过去事实相反从句谓语动词用haddone,主句谓语动词用would(should,could,might)+havedone;例如:43.I_________thepartymuchmoreiftherehadn’tbeenquitesuchacro
2、wdofpeoplethere.A.wouldenjoyB.willhaveenjoyedC.wouldhaveenjoyedD.willbeenjoying49.Allofuswouldhaveenjoyedthepartymuchmoreifthere_________quitesuchacrowdofpeoplethere.A.weren’tB.hasn’tbeenC.hadn’tbeenD.wouldn’t考点3.与将来事实相反,从句谓语动词用:did(should+do或were+todo),主句
3、谓语动词用:would(should,could,might)+do。例如:43.Ifyourcar___anyattentionduringthefirst12months,takeittoanauthorizeddealer.(08年)•A.shallneedC.wouldneed•B.shouldneedD.willneed考点4.时态的交叉现象,也就是主句与从句的动作发生在不同的时间段例如:Ifyouhadgonetoseethedoctor,youwouldbeallrightnow.你要是早去看
4、病,你现在就没事了。考点5.虚拟条件句if可以省略,但从句的语序要用到装,即将were,had或should移至主语的前面形成倒装,但否定词not不前移。例如:65.___,hewouldnothaverecoveredsoquickly.(05年)•A. Hadn'thebeentakengoodcareof•B. Hadhenotbeentakengoodcareof•C. Hadnothebeentakengoodcareof•D. Hadhebeennottakengoodc
5、areof考点6.insist(一个坚持);ordercommand(两道命令);suggest,advise,propose(三条建议);ask,require,request,demand(四点要求)及相应的名词的从句,谓语要使用:should+动词原形或动词原形例如:58.Itwasrecommendedthatpassengers___smokeduringtheflight.(04年)•A. notB.neednotC.couldnotD.wouldnot考点7.Itis+advisable
6、,essentialimportant,,imperative,33外院英语专业四级语法串讲内部资料incredible,等等相关的从句,谓语要使用:should+动词原形或动词原形例如:46.Itisimperativethatstudents____theirtermpapersontime.(04年)•A.handinB.wouldhandin•C.havetohandinD.handedin考点8.itishigh(about)timethat的结构中,从句使用一般过去式例如:54It’shi
7、ghtimewe__cuttingdowntherainforests.(06年)AstoppedBhadtostopCshallstopDstop考点9.muchas尽管,虽然,引导让步状语从句,从句中用wouldhavedone表示假设,可以是说话人的语气变得十分委婉,真诚。例如:52.Muchas____,Icouldn’tlendhimthemoneybecauseIsimplydidn’thavethatmuchsparecash.(99年)A.IwouldhavelikedtoB.Iwouldl
8、iketohaveC.IshouldhavetolikeD.Ishouldhavelikedto考点10.ifonly表示要是…就好了相当与wish,asif/asthough的用法。与现在事实相反:动词过去式与过去事实相反:had+done与将来事实相反:could/would+do例如:52.IfonlyI__playtheguitaraswellasyou!(06年)AwouldBcouldCshouldD