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1.掌握宾语从句，主语从句，表语和同位语从句及目的状语从句中虚拟语气的形式及用法。2.通过自主学习与合作探究，学会分析与总结的方法，并能学以致用。3.通过虚拟的语境表达对生活的美好的愿望及想法。学习目标预习检测：根据所给的词用虚拟语气的形式完成下列习题1.Ididn'tknowheraddress.IfI___________(know)it,I_____________(send)aLettertoher.2.IfI___________(know)thatitwassuchahardjob,I________________(ask)Mr.LIforhelp.3.Ifit____________________________(rain),thesportsmeet______________(put)off.4.HowIwishI_____________(notmake)thatmistake,thenIcouldhavepassedtheexam.5.HowIwishit______________(notrain)now.hadknownwouldhavesenthadknownwouldhaveaskedrained/weretorain/shouldrainwouldbeputhadn’tmadeweren’training条件从句If从句的谓语形式主句的谓语形式与现在事实相反与过去事实相反与将来事实相反did/werehaddonewould/could/should/might+V.(原)would/could/should/might+have+p.p.1.did/were2.shoulddo3.weretodowould/could/should/might+V.(原)1：虚拟语气在if引导的条件状语从句中的用法：复习旧知:2.虚拟语气在wish后的宾语从句中的用法：与现在事实相反与过去事实相反表示将来不能实现的愿望were/didhaddonemight/should/could/woulddo注意几点：1.有时，用without短语代替if从句虚拟语气。Withoutwater,therewouldbenolivingthings.2..在正式文体中,有时可以把虚拟条件句中的连词if省略,而将were,had,should等动词提前到主语前面。e.g.Weresheyounger,shewoulddoit.她要是再年轻点,就会干的。e.g.Hadheknownheraddress,hewouldhavegonetovisither.如果他知道她的地址,他会去看她的。Shouldithappen,whatwouldyoudo?如果真发生这样的事,你怎么办呢？3.有时条件从句的谓语动词的动作发生的时间不一致，这时动词的形式要根据它所表示的时间加以调整。A.Ifyouhadlistenedtothedoctor,youwouldbeallrightnow.如果你当初听了医生的话，身体现在就好了。B.Ifwehadn’tgoteverythingreadybynow,weshouldbehavingaterribletimetomorrow.从句动作指过去，主句动作指现在。从句动作指过去，主句动作指将来。单项选择：1.IwishI____youwhenwewerebadlyinneedofyourhelp.A:didseeB:hadseenC:couldseeD:saw2.Ifyouweretodoit,theresults______different.A:areB:wereC:wouldbeD:wouldhavebeen3.Ifithadn'trainedyesterday,he___toseeyou.A:wouldhavecomeB:willcomeC:wouldcomeD:comeBCA1.Youdidn’tletmedrive.Ifwe______inturn,you_____sotired.(1996全国）A.drove;didn’tgetB.drove;wouldn’tgetC.weredriving;didn’tgetD.haddriven;wouldn’thavegot2.Ididn’tseeyoursisteratthemeeting.Ifshe_____,shewouldhavemetmybrother.A.hascomeB.didcomeC.cameD.hadcome3.Whatwouldhavehappened,______,asfarastheriverbank?A.BobhadwalkedfartherB.ifBobshouldwalkfartherC.hadBobwalkedfartherD.ifBobwalkedfarther4.Hehesitatedforamomentbeforekickingtheball,otherwisehe____agoal.A.hadscoredB.scoredC.wouldscoreD.wouldhavescored5.Thetwostrangerstalkedasifthey____friendsforyears.A.shouldbeB.wouldbeC.havebeenD.hadbeen探究一:1.用于表示要求、命令、建议的动词引导宾语从句时的虚拟语气。常见表示要求、命令、建议的动词：一个坚持：insist（坚持要求）两个命令：order,command三个建议：advise,suggest,propose四个要求：demand,require,request,desire这些动词后面的宾语从句要使用虚拟语气，即从句中的动词使用_________________________，should可以省略。【知识梳理】should+动词原形及时检测:1.Thedoctorsuggestedthathe_____________(try)tolosehisweight.2.Heinsistedthatwe________________(tell)himthenews.3.Wesuggestthatstudents________________(spend)twoorthreeyearsinanEnglishspeakingcountry.4.Mikeinsistedthathe_____________(notsteal)anything.(should)try(should)tellshouldspendhadn’tstolen追问：suggest，insist后的宾语从句都用虚拟语气吗？【知识梳理】suggest当“暗示、表明’’讲时insist表示“坚持认为、坚持说’’之意时，应用陈述语气。及时检测:Sheinsiststhatshe________(be)right.SheinsistedthatI_________________(finish)theworkatonce.Theexpressiononhisfacesuggestedthathe_________(be)veryangry.isshouldfinishwas在suggestion/proposal/order/plan/advice/idea/request等名词后的表语和同位语从句中要用“should＋动词原形”should可以省略．探究二：虚拟语气在表语从句和同位语从句中的用法：及时检测：表语从句：Mysuggestionisthatwe_________(go)thereatonce.同位语从句：Theproposalthatwe____________(stay)longerinShanghaiwasrejected.shouldgoshouldstay探究三:追问：wouldrather后的宾语从句中，谓语动词用什么时态？_______________.过去时或过去完成时及时检测：Iwouldratheryou________(tell)methetruth.Iwouldratheryou_________(go)therelastSunday.toldhadgone探究四：常用的主语从句的形式：Itisnecessary/strange/possible\important/natural+that+句子（should）+动词原形Itisimportantthathe(should)masteraforeignlanguage.It’snecessarythatweshouldstudyhard.及时检测：Itisimportantthatwe_________(do)wellinourlessonsfirst.Itisapitythatwe________________(notmeet)lastnight.Itisstrangethatshe___________(refuse)tocometotheparty.shoulddoshouldnotmeet(should)refuseforfearthat以防incaselest主语+shoulddo（should不能省略）探究五：虚拟语气在目的状语从句中的用法：及时检测：I’llkeepaseatforyouincaseyou____________(change)yourmind.我给你留一个位子，说不定你会改变主意。shouldchangeIt’s(about/high)time+that--should+V.过去时你该走了It’shightimethatyou_______(go).It’shightimethatyou__________(go).探究六：虚拟语气在定语从句中的运用：及时检测：wentshouldgo探究七:Ifonly+句子“要是…就好了”（时态往前推一格）IfonlyIknewhisname.现在的虚拟Ifonlywehadfollowedyouradvice!过去的虚拟IfonlyIwouldseehimagain!将来的虚拟探究八:asif/though+句子“好像”（时态往前推一格）Helooksasifheweredrunk.Theytalkedasiftheyhadbeenfriendsforyears.当堂检测1.Someexpertsdemandedthatchildren______timeforsleepandplay.A:giveB:shouldgiveC:wouldbegivenD:begiven2.ItisimportantthattheTOEFToffice______yourregistration.A:willconfirmB:confirmC:wouldconfirmD:mustconfirm3.Whathesuggestedwasthattheinformation______.A:shouldcheckB:becheckedC:willcheckD:checking4.Ourheadmasterrequestedthateveryone______present.A:wasB:wereC:beD:been5.Heagreedwithmysuggestionthatwe______thedate.A:changingB:changedC:willchangeD:shouldchange当堂检测:(附加题）Choosethebestanswer:1.Itisstrangethatthelittleboy_____speaktwoforeignlanguages.A.couldB.canC.shouldD.would2.Hegaveordersthattheexperiment____before5:30pm.A.befinishedB.willfinishC.mustbefinished3.Theyoungmaninsis