表语从句-新概念语法

Unit3Grammar表语从句一、表语从句的定义：•表语从句放在连系动词之后，充当复合句中的表语。Thequestioniswhowilldoit.系动词表语从句二、表语从句的构成：•（系动词）+引导词+简单句WhatIwanttosayisthatIamtired.引导词表语从句三、引导表语从句的关联词的种类：•1.可接表语从句的连系动词有be（is,am,are,was,were）,look,seem,sound,appear等。Chinaisnolongerwhatsheusedtobe.今日的中国不再是过去的中国了。Thequestionremainswhethertheywillbeabletohelpus.问题还是他们能否帮我们。Atthattime,itseemedasifIcouldn'tthinkoftherightword.当时，我似乎怎么也想不出一个恰当的字眼来。•2.从属连词whether,as,asif/though引导的表语从句Helookedjustashehadlookedtenyearsbefore.他看起来还与十年前一样。Itsoundsasifsomeoneisknockingatthedoor.听起来好像有人在敲门。•3.because,why引导的表语从句That'sbecausehedidn'tunderstandme.那是因为他没有理解我。(That'sbecause...强调原因)That'swhyhegotangrywithme.那正是他对我生气的原因。(That'swhy...强调结果)what引导的主语从句表示结果或名词reason作主语时，后面的表语从句表示原因时要用that引导，不宜用because。ThereasonwhyIwassadwasthathedidn'tunderstandme.我难过的原因是他没有理解我。•4.连接代词who,whom,whose,what,which,whoever,whatever,whichever连接副词where,when,how,why。如：•Theproblemiswhowecangettoreplaceher.问题是我们能找到谁去替换她呢。•Thequestionishowhedidit.问题是他是如何做此事的。•Thatwaswhatshedidthismorningonreachingtheattic.那就是她今晨上了阁楼干的。5.从属连词that。that在表语从句中部充当任何句子成分，也没有任何意义。如：•ThetroubleisthatIhavelosthisaddress.麻烦是我把他的地址丢了。6.使用虚拟语气的表语从句在表示建议、劝告、命令含义的名词后的表语从句，谓语动词需用should+动词原形表示，should可省略。常见的词有：advice,suggestion,order,proposal,plan,idea等。Mysuggestionisthatwe(should)startearlytomorrow.我的建议是我们明天一早就出发。四、应注意的问题：•1.连系动词be，appear，seem，look等之后可以跟表语从句。Itwasbecausehedidn'tpasstheexam.Itseems（that）hewaslateforthetrain.Itappearsthatshewaswrong.Itseemstomethatweshouldanswerforthis.Itappearstoherthathewantstoteachusallhehas.2.引导表语从句的引导词有以下几类。•1）wh-疑问词Myquestioniswholeft.我想问的是谁离开了。WhatIwonderiswhenheleft.我想知道他是何时离开的。That'swhathewants.那是他想要的。Thisiswheretheyoncelived.这就是他们曾经住过的地方。Thatiswhyhedidn'tcomehere.这就是他为何没到这儿来的原因。•2）whetherMyquestioniswhetherheleft（ornot）.我的问题是他是否离开了。注：if不能引导表语从句。•3）thatThefactisthatheleft.事实是他离开了。ThetruthisthatIdidn'tgothere.事实是我没去那儿。•4）because，as，asif，asthoughIt'sjustbecausehedoesn'tknowher.这是仅仅因为他不认识她。Thingsarenotalwaysastheyseemtobe.事物并不总是如其表象。Helooksasifhe'stired.他好像累了。1.Thequestionis________wewillhaveoursportsmeetnextweek.A.thatB.ifC.whenD.whether2．Thereasonwhyhefailedis________hewastoocareless.A.becauseB.thatC.forD.becauseof3.Goandgetyourcoat.It’s________youleftitA.whereB.thereC.therewhereD.wherethere4．Theproblemis_________totaketheplaceofTedA.whocanwegetB.whatwecangetC.whowecangetD.thatwecanget5.WhatIwanttoknowis______helikesthegiftgivenbyus.A.thatB.ifC.whetherD.不填6.Thereasonis_________Imissedthebus.A.thatB.whenC.whyD.what7.Thatis_____wewerelatelasttime.A.thatB.whenC.whyD.what8.Shelooked_________sheweretenyearsyounger.A.thatB.likeC.asD.asthough9.—Ifellsick!--Ithinkitis_______youaredoingtoomuch.A.whyB.whenC.whatD.because10.Thereasonwhyhehasn’tcomeis___________.A.becausehismotherisillB.becauseofhismother’sbeingillC.thathismotherisillD.forhismotherisill11.—Hewasbornhere.--Thatis_______helikestheplacesomuch.A.thatB.whatC.whyD.how12.Thatis______LuXunoncelived.A.whatB.whereC.thatD.whythat/what的区别1．_______yourfatherwantstoknowis________gettingonwithyourstudies.A.What;howareyouB.That；howyouareC.How；thatyouareD.What；howyouare2.Thetroubleis__________weareshortoftools.A.whatB.thatC.howD.whythat3.Americawas__________wasfirstcalled“India”byColumbus.A.whatB.whereC.theplaceD.therewhere