表语从句表语:表语是对主语的解释说明,并且常与连系动词一起使用,用来说明主语的身份,性质,特征和状态的,常用名词,代词,数词,v-ed,v-ing,副词,介词短语,形容词,不定式和从句来充当。WeareChinese.Thisbooklooksexpensive.I.表语:系动词:be动词、感官动词feel,smell,sound,taste、表持续:keep,remain,stay、表变化:become,grow,turn,get等,其他:prove,seem,appear等II表语从句:Thequestioniswhowilldoit.III.表语从句的引导词1.从属连词:that/whether/asif/asthough/as/because(1)that:that引导表语从句本身没有意义,只起连接作用,不充当句子成分,一般不能省略。(2)whether:表示“是否”,表从中只能用whether,不能用if.(3)asif/though“好像”,引导表语从句时要注意语气:如果句中的情况与事实不相符,从句多用虚拟语气。从句表示与现在事实相反,谓语动词用一般过去式;从句表示与过去事实相反时,谓语动词要用“had+过去分词”,从句表示将来的可能性不大,用would(might,could)+动词原形.LiLeiisnowinanewjacket.HelooksasifhewereanAmericanboy.Thegirlisgivingusavividdescriptionofthemoon.Itseemsasifshehadbeentothemoonmanytimes.Itlooksasifitmightrain.Thecloudsaregathering.Itlooksasifitisgoingtorain.(4)as引导表语从句Helookedjustashehadlookedtenyearsbefore.(5)because引导表语从句常用结构:This/That/Itis/wasbecause····这就是因为…ThatisbecauseIdon’tlikeChinese.2.连接代词:who/whom/whose/what/which/whoever/whatever/whichever/whomeverTomisnolongerwhatheusedtobe.Theproblemiswhoseworkisthebest.3.连接副词:when/where/how/whyThequestionishowhedidit.Thequestioniswherewecanlive.Ihadneitheraraincoatnoranumbrella.That’swhyIgotwetthrough.IV注意1.陈述语序。Thequestioniswhencanhearriveatthehotel.__________________________________2.Thereasonisthathegotuplate.Whyheislateisthathegotuplate.reason做主语,表语从句要用that来引导,而不用because;why引导主语从句做主语时,表语从句用that引导,不用because。3.“Thatisbecause...”指原因或理由,“Thatiswhy...”则指由于各种原因所造成的后果。Iwasangry.Thatwasbecausehedidn’tunderstandme.That’swhyhegotfiredfromthatfirm.4.使用虚拟语气的表语从句在表示建议、劝告、命令、计划含义的名词后的表语从句,谓语动词需用“should+动词原形”表示虚拟语气,should可省略。常见的词有:Mysuggestionisthatwe(should)startearlytomorrow.5.表语从句的复合句中,主句时态和从句时态可以不一致。ThequestioniswhowilltravelwithmetoBeijingtomorrow.Thequestioniswhyhecriedyesterday.1.Thequestioniswhetherweneedmoreicecream.问题是我们是否还需要一些冰淇淋。2.Theproblemwasthatitwastoovaluableforeverydayuse.问题是它作为日常之用太贵重了。3.Itlookedasifitwasgoingtosnow.看起来好像要下雪了。4.That'sbecauseweneverthoughtofit.这是因为我们从未想过此事。5.Itseemsasifhedidn’tknowtheanswer.好像他不知道答案。6.Thequestioniswhichofusshouldgo.问题是我们哪一个应该去。7.Theproblemwaswhocoulddothework.问题是谁能做这项工作。8That'swhatheisworryingabout.那就是他在担心的事。9That'swhatweshoulddo.那是我们应该做的。10.Thatiswhatheisworriedabout.那就是他所担心的。11.Goandgetyourcoat.It'swhereyouleftit.去把雨衣拿来。就在你原来放的地方。12.Ihadneitheraraincoatnoranumbrella.That’swhyIgotwetthrough.我们既没伞也没雨衣,这是我们淋湿的原因。13.Thatishowmiceruinmanystoresofgraineveryyear.那就是老鼠是怎样每年损害大量粮食的。14Theproblemishowwecangetthethingsweneed.问题是我们怎样能弄到我们需要的东西。WhatItoldhimwasthatIwouldfindhimagoodplay.我告诉他的是我会给他找个好剧本。ThatiswhatIwanttotellyou.那就是我想要对你讲的。Thatiswhyshefailedtopasstheexam.那就是她考试不及格的原因。13.那是因为他不了解我。Thatisbecausehedidn’tunderstandme.14.问题是我们是否能依靠他。Theproblemiswhetherwecanrelyonhim.15.那是因为我们那是需要钱。That’sbecausewewereinneedofmoneyatthattime.16.听起来好像有人在敲门。Itsoundsasifsomeoneisknockingatthedoor.17.那就是他出生的地方。Thatiswherehewasborn.18.他看起来好像要哭了。Helooksasifhewasgoingtocry.19.他失败的原因在于她太粗心了。20.Jane不再是四年前的她的。