名詞性從句在句子中起名詞作用的句子叫名詞從句。名詞從句的功能相當(dāng)于名詞詞組,它在復(fù)合句中能擔(dān)任主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)、介詞賓語(yǔ)等，因此根據(jù)它在句中不同的語(yǔ)法功能，名詞從句又可分別稱為主語(yǔ)從句、賓語(yǔ)從句、表語(yǔ)從句和同位語(yǔ)從句。名詞性that從句由從屬連詞that引導(dǎo)的從句叫做名詞性that從句。That只起連接主句和從句的作用，在從句中不擔(dān)任任何成分，本身也沒(méi)有詞義。名詞性that從句在句中能充當(dāng)主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)和形容詞賓語(yǔ)。例如：主語(yǔ)：Thatheisstillaliveissheerluck.他還活著全靠運(yùn)氣。賓語(yǔ)：JohnsaidthathewasleavingforLondononWednesday.約翰說(shuō)他星期三要到倫敦去。表語(yǔ)：Thefactisthathehasnotbeenseenrecently.事實(shí)是近來(lái)誰(shuí)也沒(méi)有見(jiàn)過(guò)他。同位語(yǔ)：Thefactthathehasnotbeenseenrecentlydisturbseveryoneinhisoffice.近來(lái)誰(shuí)也沒(méi)有見(jiàn)過(guò)他，這一情況令辦公室所有的人不安。形容詞賓語(yǔ)：Iamgladthatyouaresatisfiedwithyourjob.你對(duì)工作滿意我感到很高興。2）That從句作主語(yǔ)通常用it作先行詞，而將that從句置于句末。例如：Itisquiteclearthatthewholeprojectisdoomedtofailure.很明顯，整個(gè)計(jì)劃注定要失敗。It'sapitythatyoushouldhavetoleave.你非走不可真是件憾事。if,whether引導(dǎo)的名詞從句1）yesno型疑問(wèn)從句從屬連詞if,whether引導(dǎo)的名詞從句是由一般疑問(wèn)句或選擇疑問(wèn)轉(zhuǎn)化而來(lái)的，因此也分別被稱為yesno型疑問(wèn)句從句和選擇型疑問(wèn)從句，其功能和wh從句的功能相同。例如：主語(yǔ)：Whethertheplanisfeasibleremainstobeproved.這一計(jì)劃是否可行還有等證實(shí)。賓語(yǔ)：Letusknowwhether/ifyoucanfinishthearticlebeforeFriday.請(qǐng)讓我們知道你是否能在星期五以前把文章寫(xiě)完。表語(yǔ)：Thepointiswhetherweshouldlendhimthemoney.問(wèn)題在于我們是否應(yīng)該借錢(qián)給他。同位語(yǔ)：Theyareinvestigatingthequestionwhetherthemanistrustworthy.他們調(diào)查這個(gè)男人是否值得信賴。形容詞賓語(yǔ)：She'sdoubtfulwhetherweshallbeabletoe.她懷疑我們是否能夠前來(lái)。介詞賓語(yǔ)：Iworryaboutwhetherhecanpassthroughthecrisisofhisillness.我擔(dān)心他是否能度過(guò)疾病的危險(xiǎn)期。2）選擇性疑問(wèn)從句選擇性疑問(wèn)從句由關(guān)聯(lián)詞if/whether…or或whether…ornot構(gòu)成。例如：Pleasetellmewhether/iftheyareSwedishorDanish.請(qǐng)告訴我他們是瑞典人還是丹麥人。Idon'tcarewhetheryouliketheplanornot.我不在乎你是否喜歡該計(jì)劃。練習(xí)一、單項(xiàng)選擇。1.Evidencecameup_____specificspeechsoundsarerecognizedbybabiesasyoungassixmonthsold.A.whichB.whatC.thatD.when2.Ihaven’tdecided_____hoteltostayat.A.whichB.whatC.atwhichD.where3.______surprisesmostofus.A.WolvesareafraidofusB.ThefactthatwolvesafraidmenC.ThefactthatwolvesareafraidofmenD.Wolves’afraidofmen4.Theannouncement______allflightwerecancelledbecauseofbadweathergreatlydistressedthewaitingpassengers.A.thatB.whichC.whyD.ofwhich5.Thequestionis______canbeputintopractice.A.howyouhavelearnedB.howwhatyouhavelearnedC.thatwhyyouhavelearnedD.howthatyouhavelearned6.Ahingejointis_______permitstheforwardsandbackwardmovementofadoor.A.thatB.whatC.thoseD.which7.OnereasonwhyHamletissuchasuccessfulplayisthat_______.A.itappealsdifferentlytopeopleB.differentpeopleareappealedC.itappealstomanydifferentpeopleD.peoplefinditappealingtothemverymuch8.Amoreimportantquestionis______theseideasarewellorillfounded.A.whereB.whenC.howD.whether9.Ithinkitis_____youaredoingtoomuch.A.becauseofB.becauseC.becausethatD.becausefor10.Noonecouldunderstand_______.A.thathewastalkingaboutB.whathewastalkingaboutC.hewastalkingaboutD.whichhewastalking11.Iknewnothingabouthisjourney______hewaslikelytobeawayforthreemonths.A.ifB.inthatC.exceptthatD.which12.Thefact______doctorsremendthatchildrenwithhypertensiondrinkcoffeeissurprising.A.whatB.isthatC.thatD.of13._______isnoreasonfordischargingher.A.BecauseshewasafewminuteslateB.OwingtoafewminutesbeinglateC.ThefactthatshewasafewminuteslateD.Beingafewminuteslate14.Ihavenodoubt______hewillovereallhisdifficulties.A.whetherB.whenC.thatD.if15.Theoldgentlemanneverfailstohelp______isinneedofhishelp.A.whoB.whoeverC.oneD.whomever16.“Isthereanyparticulardessertyouwouldlikehave?”“_____youselectisallrightwithme.”A.WhateverB.WhichC.ThatD.Whichever17._______somemammalscametoliveintheseaisnotknown.A.ThatB.WhatC.HowD.Since18._______ishisowndecision.A.WhenheisleavingB.WhenheleavesC.WhendoesheleaveD.Heleaves19.ThepeopleatthepartywereworriedaboutJanetbecausenoonewasaware________shehadgone.A.ofwhereB.oftheplaceC.theplaceD.theplacewhere20.________isofnoconcerntous.A.ItrainornotB.IfornotitrainsC.WhetheritrainsornotD.Willitrainornot二、用適當(dāng)?shù)倪B接詞填空。(what,that,who,whom,whose,which,how,when,where,whatever,whoever,whomever,whichever,however,whenever,wherever,whether,why,because)1.________hesaidhasnothingtodowiththistask.2.________breaksthelawdeservesafine.3.Take_______muchyouwantwheneveryouwantto.4.Thequestionremains_______weshouldaccepttheirinvitation.5.Freemovieticketswillbesentto_______efirst.6.Sheisindoubt________sheacceptsyouradvice.7.Idon'tdoubt________he'lle.8.Itworriedherabit____herhairwasturninggrey.9.Itisgenerallyconsideredunwisetogiveachild____heorshewants.10.Whytheexplosionoccurredwas________thelaboratoryattendanthadbeencareless.三、中譯英。1.我想知道50年后我們的生活會(huì)是什么樣子的。______________________________________________2.我們贏得了辯論賽,話題是關(guān)于是否應(yīng)該允許克隆人類(lèi)。______________________________________________3.你相信那個(gè)賊去年在北京市偷了好多自行車(chē)嗎？___________________________________________4.我不相信你們班長(zhǎng)明天會(huì)來(lái)。___________________________________________5.我們隊(duì)贏得了比賽，這一消息讓我們很興奮。__________________________________________________四、改錯(cuò)。1.Ifsheesor

notdoesn’tconcernme.2.Whoeverwasresponsiblefortheaccidentisnotyetclear.3.Weneverdoubtwhetherheishonest.4.Youmustgiveitbacktowhomeveristheownerofit.5.Ifeelitaterriblethingwhichmymothershouldhavetotoilsoendlessly.6.Thefactiswhathedidn’tnoticethecaruntiltoolate.7.Thereasonwhyhewaslatewasbecausehedidn’tcatchtheearlybus.8.Yourbrother’shealthisnotwhichitusedtobe.9.Obviouslytherewaslittleprobabilitywhichtheywouldsucceed,buttheydidn’tmind.10.Theproposalhasbeenputforwardwhattheflightshouldbecancelled.