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1考点1.If从句中的虚拟语气省略if，从句的语序用到装，即将were,had或should移至主语的前面，但否定词not不前移。1、与过去事实相反：从句sbhaddone，主句sbwould(should,could,might)+havedone；1.HadJudybeenmorecarefulonthemathsexam,she_couldhavegot___muchbetterresultsnow.2008A.wouldbegettingB.couldhavegotC.mustgetD.wouldget2.Hewouldhavefinishedhiscollegeeducation,buthe_had___toquitandfindajobtosupporthisfamily.2007A.hadhadB.hasC.hadD.wouldhave3._Hadhenotbeentakengoodcareof__,hewouldnothaverecoveredsoquickly.2005/1995A.Hadn'thebeentakengoodcareofB.HadhenotbeentakengoodcareofC.HadnothebeentakengoodcareofD.Hadhebeennottakengoodcareof4.I_wouldhaveenjoyed__thepartymuchmoreiftherehadn’tbeenquitesuchacrowdofpeoplethere.2004/1996A.wouldenjoyB.willhaveenjoyedC.wouldhaveenjoyedD.willbeenjoying5.Allofuswouldhaveenjoyedthepartymuchmoreifthere_hadnotbeen__quitesuchacrowdofpeoplethere.2004/2000A.weren’tB.hasn’tbeenC.hadn’tbeenD.wouldn’t6._Haditnotbeen__forthefactthatshebrokeherleg,shemighthavepassedtheexam.20022A.HaditnotbeenB.Hadn’titbeenC.WasitnotD.Wereitnot7._Given____enoughtimeandmoney,theresearcherswouldhavebeenabletodiscovermoreinthisfield.1998a.Givingb.Togivec.Givend.Beinggiven8.Iwastohavemadeaspeechif_Ihadnotbeencalledaway__.1997A.IwasnotcalledawayB.nobodywouldhavecalledmeawayC.IhadnotbeencalledawayD.nobodycalledmeaway9.__Given___time,he’llmakeafirst-classtennisplayer.1996A.HavingB.GivenC.GivingD.Had10.Wecould_haveprovided__himwithadetachedhousewhenhecame,buthehadspecificallyaskedforasmallflat.1995A.provideB.haveprovidedC.notprovideD.nothaveprovided11._HadIrealized_____youwerebusy,Iwouldn’thavebotheredyouwithmyquestions.1994A.IfIrealizedB.HadIrealizedC.IrealizedthatD.AsIrealized12._Haditnotbeenfor____theirhelp,wewouldnothavesucceeded.1992A.Hadn'tbeenforB.HaditnotbeenforC.Ithadn'tbeenforD.Hadnotitbeenfor13.Ifyou_hadnotbeen____insuchahurryyouwouldnothaveputsugarintothesauceinsteadofsalt.1992A.werenot,wouldnotputB.were,wouldputC.hadbeen,wouldhaveputD.hadnotbeen,wouldnothaveput14.Didyouhearofhisdeath?'Yes.Ifhe_hadbeenoperatedon__intime,hemightnothavedied___.”19903A.hadbeenoperatedon,mightnotdieB.hadbeenoperatedon,mightnothavediedC.wereoperatedon,mightnotdieD.wereoperatedon,-mightnothavedied2、与现在事实相反：从句sbdid(were)，主句sbwould(should,could,might)+do；1.Iftherewerenosubjunctivemood,English_wouldbe____mucheasiertolearn.2009A.couldhavebeenB.wouldbeC.willbeD.wouldhavebeen2.“You_could_____borrowmynotesprovidedyoutakecareofthem,”Itoldmyfriend.2007A.couldB.shouldC.mustD.can正确答案是陈述语序3.Ifyouexplainedthesituationtoyoursolicitor,he_wouldbe_______abletoadviseyoumuchbetterthanIcan.2005A.wouldbeB.willhavebeenC.wasD.Were4.IfIknewJapanese,I_wouldapply_____fortheposition.1991A.wouldapplyB.willapplyC.mayhaveappliedD.willhaveapplied3、与将来事实相反：从句sbdid(should+do或were+todo)，主句sbwould(should,could,might)+do。1._Should____you_have____furtherproblemswithyourprinter,contactyourdealerforadvice.2005A.If,hadB.Have,hadC.Should,haveD.Incase,had2.Thisisanillnessthatcanresultintotalblindness_if______leftuntreated.2000A.afterB.ifC.sinceD.unless3.Ifyourcarwouldneed____anyattentionduringthefirst12months,takeittoanauthorizeddealer.(1998)4A.shallneedB.shouldneedC.wouldneedD.willneed4、错综条件句，也就是主句与从句的动作发生在不同的时间段。根据历年真题能看出，一般以考察从句对过去虚拟，而主句对现在虚拟为主，即从句sbhaddone，主句sbwould(should,could,might)+do；1.Ifonlythepatient_hadreceived_____adifferenttreatmentinsteadofusingtheantibiotics,hemightstillbealivenow.2007A.hadreceivedB.receivedC.shouldreceiveD.werereceiving2._Wouldyoubesurprised___ifIhadarrivedyesterdaywithoutlettingyouA.WouldyoubesurprisedB.WereyousurprisedC.HadyoubeensurprisedD.Wouldyouhavebeensurprise考点2：表示建议、要求、命令等动词如insist,order,command,suggest,advise,propose,ask,require,request,demand引导的从句及it引导的相应的分词、名词和形容词从句，谓语用（should)+动词原形。1.Itwasrecommendedthatpassengers_not__smokeduringtheflight.(2004/1994)A.notB.neednotC.couldnotD.wouldnot2.Heleftordersthatnothing_shouldbe_____toucheduntilthepolicearrivedhere.1997A.shouldbeB.oughttobeC.mustbeD.wouldbe3.Sheaskedthatshe__be____allowedtoseehersoninpolicecustody.1993A.wouldbeB.couldbeC.beD.was4.Theteacherdemanded_thatTomhandin_____hisessayimmediately.1991A.TomtohandinB.thatTomhandsinC.thatTomhandedinD.thatTomhandin5考点3：Itis+advisable,essential,important,imperative,incredible等从句，谓语用（should）+动词原形。1.Itisnecessarythathe_handin___theassignmentwithoutdelay.2010A.handinB.handsinC.musthandinD.hastohandin2.ItisabsolutelyessentialthatWilliam_continue___hisstudyinspiteofsomelearningdifficulties.2007A.willcontinueB.continuedC.continueD.continues3.Itisimperativethatthegovernment_attract_moreinvestmentintotheshipbuildingindustry.2006A.attractsB.shallattractC.attractD.hasto4.Itisimperativethatstudents_handin___theirtermA.handinD.5.Theopeningceremonyisagreatoccasion.Itisessential_forustobeprepared____forthat.2003A.forustobepreparedB.thatwearepreparedC.ofustobepreparedD.ourbeingprepared考点4：itis(high/about)timethat的结构中，从句使用一般过去式。例如:1.It’shightimewe_stopped_cuttingdowntherainforests.2006AstoppedBhadtostopCshallstopDstop2.Thatwasnotthefirsttimehe_hadbetrayed_______us.Ithinkit’shightimewe__took______strongactionsa