高一英语表语从句讲解

名词性从句Complexsentence复合句：由一个主句和一个或一个以上的从句构成的句子。连词连接两其中一个主谓结构是句子的主要部分（主句），另一个或一个以上的主谓结构只在句子中作某个成分如﹙主语、宾语、表语、定语、状语、同位语）。在复合句中起名词作用的从句叫名词性从句（NounClauses）.名词性从句的功能相当于名词词组，它在复合句中能担任主语、宾语、、表语、同位语，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。名词性从句︰名词性从句nounclause主语从句subjectclause宾语从句objectclause表语从句predicativeclause同位语从句appositiveclausePredicativeClauses表语从句1.表语从句的定义Thequestioniswhowilldoit.复合句Thequestionisdifficult.简单句（表）表语从句（表）表语从句的定义：在复合句中作表语的从句叫表语从句。表语从句位于主句的系动词后。表语从句说明主语是什么或者怎么样,对主语进行解释、说明，使主语的内具体化。2.表语从句的构成Thisiswhyhedidit.主语系动词表语从句结构是“主语+系动词+表语从句”。可以接表语从句的系动词有：be，feel,seem,look,sound,taste,smell，appear，remain,keep,staybecome,get,grow,turn,go,prove,turnout等。连接词：that/whether/asif/asthough连接代词：who/whom/whose/which/what连接副词：when/where/why/how/because1.Thequestioniswhetherwecanrelyonhim.2.That’sbecausewewereinneedofmoneyatthattime.3.Helookedasifhewasgoingtocry.4.That’swhyIwaslate.Predictiveclause表语从句1.that引导的表语从句1)that在从句中仅起连接作用，无实际意义，在句中不做任何成分，不能省略。2)在表“建议，劝说，命令”的名词idea,suggestion,request,proposal后面的表语从句中，谓语动词用“should+动词原形”，should可省略1)Myopinionisthatit’sgettingbetterandbetter.2)Mysuggesstionisthatwe(should)startearlytomorrow.whether在表语从句中表,但不充当句子的成分。if引导表语从句.如:1.Whatthedoctorreallydoubtsiswhethermymotherwillrecoverfromtheseriousdiseasesoon.2.Thequestioniswhetheritisworthdoing.“是否”不能引导词的用法（二）what在表语从句中充当______________表示____________________________.1.Thequestioniswhatcausedtheaccident.2.Thatmountainisnolongerwhatitusedtobe.3.Whathetoldyouwaswhathadbeendiscussedatthemeeting.主语、宾语或表语什么，什么样子，或所…的（人或事）引导词的用法（三）who在表语从句中充当______________表示____.1.Theproblemiswhocoulddothework2.Mytroubleiswho(whom)Icanturnto.主语、宾语或表语谁引导词的用法（四）which在引导表语从句时,常充当_____________表示。如：Ireadaboutitinsomebookoranother,butwhatIdon’tknowiswhich(book)itis.定语,表语哪一个,哪一些引导词的用法（五）由asif,asthough引导表语从句，表示好像。句子中的系动词常用be,look,appear,seem，sound等。1.Itlooksasifitwasdoingtorain.2.Theyoungmanwithlonghairlooksasifhewereagirl.引导词的用法（六）当主句的主语为reason,或者是由why引导的从句时,与它们相关的表语从句用_________,而不能由_______引导;because引导表语从句时只能用于________________________句型中.1.ThereasonwhyIwaslatewasthatImissedthetrain.2.Iwaslate.It/That/ThiswasbecauseImissedthetrain.that来引导becauseIt/That/Thisis/wasbecause…引导词的用法（七）当表语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有why,when,where,how等Thisishowhedidit.Thatiswhythebrotherswantedtomakeabet.That’swhywe’vegivenyoutheletter.引导词的用法（八）表语从句引导词注意事项1.that引导表语从句时不能省.2.if不能引导表语从句.3.除that外的所有引导词都有自己的意义。4.除that,whether外的所有引导词都须在从句中充当相应的成分名词主语+be+that引起的表语从句主语名词常常是表示事实，真理的名词，如：fact,truth表示看法，观点、问题、麻烦的名词，如：idea,opinion,belief,view,news,advice,feeling,suggestion,plan,trouble,question,problem,1.Thefactisthatourteamhaswonthegame.2.Thetruthisthatshewastheverypersonwearelookingfor.1.That’s___thePartycalledonustodo.A.whyB.whatC.howD.that2.Thereasonis___heisunabletooperatethemachine.A.becauseB.whyC.thatD.Whether3.Thatis___theyseparated.A.thatB.whatC.whichD.where4.Janeisnolonger___shewasfouryearsago.A.whatB.whichC.thatD.when1.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.what10.Theproblemis_______hehasenoughtime.A.ifB.whetherC./D.that11.Hemadeapromise_______hewouldhelpme.A.whatB.whenC.thatD.which12.Iremember_______thisusedtobeaquietvillage.A.howB.whenC.whereD.what13.Itisgenerallyconsideredunwisetogiveachild_______heorshewants.A.howeverB.whateverC.whicheverD.whereverBCBB从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。1.Itisnotalwayseasyforthepublictosee_____useanewinventioncanbeoftohumanlife.(重庆2011)A.whoseB.whatC.whichD.that2.Hiswritingissoconfusingthatit’sdifficulttomakeout_____itisheistryingtoexpress.(安徽2011)A.thatB.howC.whoD.what3.Theshockingnewsmademerealize_____terribleproblemswewouldface.(北京2011)A.whatB.howC.thatD.why4.I’mafraidhe’smoreofatalkerthanadoer,whichis_____heneverfinishesanything.(山东2011)A.thatB.whenC.whereD.why5.We’veofferedherthejob,butIdon’tknow_____she’llacceptit.(山东2011)A.whereB.whatC.whetherD.which6.Themessageyouintendtoconveythroughwordsmaybetheexactoppositeof_____othersactuallyunderstand.(上海2011)A.whyB.thatC.whichD.what7.Wehaven’tdiscussedyet______wearegoingtoplaceournewfurniture.(2010课标全国卷)A.thatB.whichC.whatD.where8.Beforethesalesstart,Imakealistof______mykidswillneedforthecomingseason.(山东2010)A.whyB.whatC.howD.which9.Cindyshutthedoorheavilyandburstintotears.Nooneintheofficeknew______shewassoangry.(湖南2010)A.whereB.whetherC.thatD.why10.Howmuchoneenjoyshimselftravellingdependslargelyon______hegoeswith,whetherhisfriendsorrelatives.(四川2010)A.whatB.whoC.howD.why11.PartofthereasonCharlesDickenslovedhisownnovel,DavidCopperfield,was______itwasrathercloselymodeledonhisownlife.(北京2010)A.whatB.thatC.whyD.whether12.—IprefershuttingmyselfinandlisteningtomusicalldayonS