名词性从句精讲精练

第页共9页1名词性从句相关概念1.名词:表示人或事物的名称的词叫名词。2.名词在句子当中一般可以作什么成分?TheboyisliMing.主语表语Mr.Liang,a24-year-oldboy,teachesusEnglish.主语同位语宾语名词在句中主要作主语、宾语、表语和同位语。名词性从句在功能上相当于名词主语Hisjobisimportant.Whathedoesisimportant.表语Thisishisjob.Thisiswhathedoeseveryday.宾语Idon’tlikehisjob.Idon’tlikewhathedoeseveryday.同位语Idon’tknowabouttheman,Mr.White.Idon’tknowaboutthefactthatheisateacher.名词性从句考点归纳名词性从句高考考查主要内容①引导词的选择与判断；②词序：不倒装（陈述语序）；③时态：注意主，从句时态的呼应重难点：引导词的选择与判断①句式、句子成分分析：②词义分析：that无词义、whether（if）是否…什么是名词性从句?在英语的句子结构中，本来该由名词充当的主语、宾语、表语和同位语，由一个句子来充当,这个句子就叫名词性从句。主语从句(TheSubjectClause)宾语从句(TheObjectClause)表语从句(ThePredicativeClause)同位语从句(TheAppositiveClause)一、主语从句：在句中充当主语的从句叫做主语从句。例：他星期三来这里是肯定的。1.ThathewillcomehereonWednesdayiscertain.注意：从句作主语时，就算是句子意思完整，都要加上从属连词that他星期三是否来这里还不肯定的。2.WhetherhewillcomehereonWednesdayisnotcertain.注意：主语从句表示“是否”只用“whether”而不用“if”3.Whathesaidisnottrue.他所说的是不真实的。（What指。。。。的，代指物或事情）4Wherehehidthemoneyistobefoundout.5Howwecanhelpthetwinswillbediscussedatthemeeting.6Whenthey’llstarttheprojecthasnotbeendecidedyet.第页共9页27Whoevercomesiswelcome.小结一：主语从句中引导词的判断与选择有三种类型：1、that引导的主语从句，是一个完整的句子，在此句中不作任何成分也无实际意义2、whether引导的从句，意义不完整，不确定，需要增添，“是否”（主语从句用whether而不用if）3、特殊疑问词引导的主语从句，意义不完整，且缺主语，宾语，表语表什么事情则用what.①whowhosewhom（谁）whoever（无论谁）（什么）、which（哪一个），whatever（无论什么）whichever（无论哪一个）作主语、宾语、表语等。②疑问副词（连接副词）：when，where，how，why，在名词性从句中作状语分别表示(什么时候),(什么地方),(怎样),(为什么).练习：1._______hesaidistrue.A.WhatB.ThatC.WhichD.Whether2.________the2008OlympicGameswillbeheldinBeijingisnotknownyet.A.WheneverB.IfC.WhetherD.That3._______hesaidatthemeetingastonishedeverybodypresent.AWhatB.ThatC.ThefactD.Thematter4._________wecan'tgetseemsbetterthan_________wehave.AWhat;whatB.What;thatC.That;thatD.That;what5.____hisdreamofgoingtocollegewillcometrueisuncertainA.ThatB.WhetherC.IfD.Evenif6.________we'llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where7.________youdon'tlikehimisnoneofmybusiness.A.WhatB.WhoC.ThatD.Whether8.________causedtheaccidentisstillacompletemystery.A.WhatB.ThatC.HowD.Where9.______makesthisshopdifferentisthatitoffersmorepersonalservices.A.WhatB.WhoC.WhateverD.Whoever10______thebabycouldspeakmadehisparentsveryhappy.A.ThatB.WhatC.WhyD.If小结二：一、主语从句的语序（1）主语从句构成有两种a.That+陈述句Thatlighttravelsinstraightlinesisknowntoall.第页共9页3b.疑问词+句子的剩余成分Howhewassuccessfulisstillapuzzle“It”isusedasemptysubject为避免主语冗长,句子头重脚轻,经常用it作形式主语,主语从句放在后面作真正的主语.1.Itiscertainthathewillsucceed.2.Itisnotknownwhetherhewillgothere.3.Ithasnotbeendecidedyetwhenthey’llstarttheproject.在实际应用中，常用it作形式主语，而将真正的主语的that从句后置，如以下四种不同的结构：It+be+形容词＋that从句Itisnecessarythat…有必要…Itisimportantthat….重要的是…Itisobviousthat……很明显……注意：从句语气要用虚拟语气Eg.Itisnecessarythatanewplanshouldbedesignedatonce.It+be+-ed分词＋that从句Itisbelievedthat…人们相信…Itisknowntous/allthat….众所周知…Ithasbeendecidedthat……已经决定……Eg.It’sreportedthatnoonewaskilledintheearthquake.It+be+名词＋that从句Itiscommonknowledgethat……是常识Itisasurprisethat….令人惊奇的是…Itisafactthat……事实是……(1)Itisapitythatwecan’tgo.(2)Itisnosurprisethatourteamshouldhavewonthegame.It+不及物动词＋that从句Itappearsthat…似乎…Ithappensthat….碰巧…Itoccurredtomethat……我突然想起……Practicetime1.Itworriedherabit_______herhairwasturninggray.A.whileB.thatC.ifD.for2.Itisgenerallyconsideredunwisetogiveachild________heorshewants.A.howeverB.whateverC.whicheverD.whenever3.Itremainsaquestion____wecangetsomuchmoneyinsuchashorttime.A。howB.thatC.whenD.what4.Itisknowntous___wherethereispollution,thereisharm.第页共9页4A.whichB.whereC.whatD.that5.Itissuggestedthatwe________totheparklater.A.willgoB.wentC.goD.hasgone6.Itremainsaquestion____wecangetsomuchmoneyinsuchashorttime.A.howB.thatC.whenD.what二、表语从句:在句中充当表语的从句(即放在be等系动词后面)叫做表语从句。一般结构是“主语＋连系动词＋表语从句”。可以接表语从句的连系动词有be,look,remain,seem等。引导表语从句的that不可省略。另外，常用的还有thereasonisthat…和Itisbecause等结构。例如：问题是它是否值得做。Thequestioniswhetheritisworth注意：表语从句表示“是否”只用“whether”而不用“if”That'swhatweshoulddo.That'sWhyIwanttoseeyou.ItwasbecauseIgotuplate.Ilooksasifitisgoingtorain.Thequestioniswhocancompletethedifficulttask.问题是谁能完成这项艰难的任务。Theproblemishowwecangetthereontime.问题是我们怎样按时到达那儿。试区分以下句子Isthismuseumwhatyouvisited?(表从)Isthisthemuseumthatyouvisited?(定从)Isthismuseumtheonethatyouvisited?(定从)注意：这种句子考试时一定要记住这句话：名词前（尤其是单数可数名词前）一定要有限定词。然后把句子变换成陈述句，接着判断句子是属于哪种从句再完成。practice1.Thequestionis____thefilmisworthseeing.A.ifB.whatC.whetherD.how2.Thereason____Ihavetogois____mymotherisillinbed.A.why;whyB.why;becauseC.why;thatD.that;because3.___Ican’tunderstandis___shewantstochangehermind.A.What;whyB.Which;howC.That;whyD.What;because4.Ihadneitheraraincoatnoranumbrella.That’s______Igotwellallthrough.A.howB.becauseC.whyD.that第页共9页55.Heisabsenttoday.That’s______heisill.A.whenB.becauseC.whyD.that6-----Areyoustillthinkingaboutyesterday'sgame?-----oh,that's_______A、whatmakesmefeelexcitedB、whateverIfeelexcitedaboutC、howIfeelaboutitD、whenIfeelexcited7．WhynottryyourluckdowntownBob？That’s______thebestjobsare。A、whereB、whatC、whenD、why8.Seetheflagsontopofthebuilding?Thatwas______wedidthismorning.A、whenB.whichC.whereD.what9.Theproblemis_______hehasenoughtime.A.ifB.whetherC./D.that10.Goandgetyourcoat.It's_______youlef