名词性从句详细讲解

1、名词性从句详细讲解1 /8 /8名词性从句讲解在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面1.考查名词性从句的语序问题2.考查引导词that与what的区别3.考查it在名词性从句中作形式主语或形式宾语的用法4.考查whether与if的区别5.考查名词性从句中的疑问词+ever引导的名词性从句与nomatter+疑问词引导的状语从句的区别6.考查名词性从句的虚拟语气问题语法要点剖析一、名词性从句主语从句

2、、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。引导名词性从句的连接词可分为三类：连接词：that,whether,if(不充当从句的任何成分)连接代词：what,whatever,who,whoever,whom,whose,which.连接副词：when,where,how,why主语从句作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词弓导。that在句中无词义，只起连接作用；

3、连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如：Whathewantstotellusisnotclear.他要跟我们说什么，还不清楚。Itisknowntoushowhebecameawriter.我们都知道他是如何成为一名作家的。WheretheEnglisheveningwillbeheldhasnotyetbeenannounced.英语晚会将在哪里举行，还没有宣布。有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下：It+be+名词+that从句(2)

4、It+be+形容词+that从句It+be+动词的过去分词+that从句(4)It+不及物动词+that从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气”(should)+do”，常用的句型有：Itisnecessary(important,natural,strange,etc.)thatItisapity(ashame,nowonder,etc.)that.Itissuggested(requested,proposed,desired,etc.)that.宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致

5、一样，在句中可以作谓语动词或介词及非谓语动词的宾语。由连接词that引导的宾语从句由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时，第二个分句前的that不可省。例如：HehastoldmethathewillgotoShanghaitomorrow.他已经告诉我他明天要去上海。Wemustneverthink（that）wearegoodineverythingwhileothersaregoodinnothing.我们决不能认为自己什么都好，别人什么都不好。注意：在demand、order、suggest、decide、ins

6、ist,desire,demand,request,command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+动词原形”。例如：Iinsistthatshe（should）doherworkalone.我坚持要她自己工作。Thecommanderorderedthattroops（should）setoffatonce.司令员命令部队马上出发。用who，whom,which,whose,what,when,where,why,how,whoever,whatever,whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。例如：Iw

7、anttoknowwhathehastoldyou.我想知道他告诉了你什么。Shealwaysthinksofhowshecanworkwell.她总是在想怎样能把工作做好。Shewillgivewhoeverneedshelpawarmsupport.凡需要帮助的人，她都会给予热情的支持。用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether与if在作“是否”的意思讲时在下列情况下一般只能用whether，不用if：a.引导主语从句并在句首时；b.引导表语从句时；c.引导从句作介词宾语时；d.从句后有“ornot”时；e.后接动词不定式时。

8、例如：Whetherthereislifeonthemoonisaninterestingquestion.月球上有没有生命是个有趣的问题。Everythingdependsonwhetherwehaveenoughmoney.一切要看我们是否有足够的钱。注意宾语从句中的时态呼应，当主句动词是现在时，从句根据自身的句子情况，而使用不同时态。例如：hestudiesEnglisheveryday.（从句用一般现在时）hestudiedEnglishlastterm.（从句用一般过去时）Iknow（that）hewillstudyEnglishnextyear.（从句用一般将来时）hehasstu

9、diedEnglishsince1998.（从句用现在完成时）当主句动词是过去时态（could,would除外），从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。例如：TheteachertoldusthatTomhadleftusforAmerica.think,believe,imagine,suppose等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。例如：Wedontthinkyouarehere.我们认为你不在这。Idontbelievehewilldos

10、o.我相信他不会这样做。表语从句在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用asif引导。其基本结构为：主语+系动词+that从句。例如：Thefactisthatwehavelostthegame.事实是我们已经输了这场比赛。Thatiswhyhedidntcometothemeeting.那就是他为什么不到会的原因。Itlooksasifitisgoingtorain.看上去天要下雨了。需要注意的，当主语是reason时，表语从句要用that引导而不是because。例如：Thereasonwhyhewaslatewast

11、hathemissedthetrainbyoneminutethismorning同位语从句同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导，可用于同位语从句的名词有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。例如：Thenewsthatwewonthegameisexciting.我们赢得这场比赛的消息令人激动。Ihavenoideawhenhewillcomebac

12、khome.我不知道他什么时候回来。ThethoughtcametohimthatMaryhadprobablyfallenill.他想到可能玛丽生病了。同位语从句和定语从句的区别：that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略；that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。试比较下面两个例句:Ihadnoideathatyouwerehere.（that引导同位语从句，不能省略）Haveyougottheidea（that）thisbookgivesyouoflifeinancientGreece?（that弓|导定语从句

13、，作宾语，可以省略）名词性从句专项练习100题Hissuccesswasbecauseofhehadbeenworkinghard.A.thatB.thefactwhichC.thefactthatD.thefact“IsMaryfromNewYorkCity”“Idontknow.”A.fromwhatcitydoesshecomefromB.fromwhatcityshecomeC.whatcitydoesshecomefromD.whatcityshecomesfrommakesmistakesmustcorrectthem.D.WhateverD.thatIgotD.forD.heha

14、sdonesoA.WhatB.ThatC.WhoeverThereasonwhyIdidntgotoShanghaiwasanewjob.A.becauseIgotB.becauseofgettingC.IgotItworriedherabitherhairwasturninggrey.TOC o 1-5 h zA.whileB.thatC.ifHenrykilledthedog.Illaskhimwhy.A.didhedothatB.hedidthatC.hedidHaveyouseenHenrylatelyMybosswantstoknow.A.howheisgettingalongB.h

15、owishegettingalongItisgenerallyconsideredunwisetogiveA.howeverB.whateverHeaskedmewithme.achildheorshewants.C.whicheverD.wheneverA.whatisthetroubleC.whatwasthematter10.Iamsurehesaidistrue.B.whatwrongwasD.whattroubleitisA.thatB.aboutthat11.WhenandwhyhecamehereA.isnotknownB.arenotknown12.Iwonderhowmuch

16、.C.ofthatyet.C.hasnotknownD.thatwhatD.havenotbeeA.doesthewatchcostB.didthewatchcostC.thewatchcostedD.thewatchcosts13.Maryissomeonemightrecognizeher.A.afraidofB.afraidaboutC.afraidthatD.afraidforC.whatheisgettingalongD.whatishegettingalongisnoreasonfordismissingher.A.BecauseshewasafewminuteslateB.Owi

17、ngtoafewminuteslateC.ThefactthatshewasafewminuteslateD.Beingafewminuteslate15.Theycametotheconclusionbyacomputer.A.thatnotallthingscanbedoneB.becauseofnotallthingsbedoneC.beingnotallthingscanbedoneD.becausenotallthingscanbedoneWhytheexplosionoccurredwasthelaboratoryattendanthadbeencareless.A.forB.be

18、causeC.sinceD.thatIdontdoubthellcome.A.thatB.ifC.whatD.whether“Whydidyougotothewrongclass,Mr.Wang”“Well,IforgetIwassupposedtogoto.”A.whichtheroomB.whichroomC.whatwastheroomD.whatroomwasit19.Outputisnowsixtimesitwasbeforeliberation.A.thatB.whichC.whatD.ofwhichMary:Helenisamerewasherwoman,yetshesnowbu

19、yingabighouse.Carol:Yes.Becauseshesalwayssaved.A.whatlittlesheearnsB.howlittlesheearnsC.forlittlesheearnsD.withlittlesheearnssurprisedmemostwassuchalittleboyofsevencouldplaytheviolinsowell.A.That.whatB.What.thatC.That.whichD.What.whichWegavehimhelpwecould.D.thisA.whichB.whatC.thatSheispleasedwithwha

20、tyouhavegivenhimandyouhavetoldhim.A.thatB.whichC.allwhatD.allthatB.whenisthesportsmeetgoingtobeheldD.whenthesportsmeetistotakeplaceB.howbigshoeshewearsD.whatnumbershoesarehisExcusemewouldyoupleasetellmeA.whenthesportsmeetistakenplaceC.whenisthesportsmeettobegin25.DoyouhappentoknowA.whatsizeshoeshewe

21、arsC.whatisthesizeofhisshoesThisbookwillshowyoucanbeusedinothercontexts.A.howyouhaveobservedB.howwhatyouhaveobservedC.thatyouhaveobservedD.howthatyouhaveobservedWheredoyouthinkA.hashegoneB.hashebeenC.hesgoneD.washeDoyouknowhowmanypopulationsthereareintheworldhowmuchpopulationthereisintheworldhowmany

22、thepopulationoftheworldiswhatthepopulationoftheworldisWouldyougoandseeoutsideA.whattotakeplaceB.whatTomhashappenedC.whatishappeningD.whatthematterhadbeenThesubjectofWhatisinterestingisthatIdonotevenknowhim.isA.whatB.interestingIthinkheisCharles.A.WhodoyouthinkheisC.WhomdoyouthinkheisWhatisinterestin

23、gD.IB.DoyouthinkwhoheisDoyouthinkwhoheisA.theylivedB.theylivedindidtheylivedidtheyliveinThelittleboyatehismothergavehim.A.thatB.whichC.whateverD.nomatterwhatThecityisnolonger.A.whatitisB.thatitusedtobeC.whichitwasD.whatitusedtobeMyparentsusedtheyhadtogetanewcarforme.A.whichB.thatC.whatD.allwhatwegos

24、wimmingeverydayusalotofgood.A.If.doB.That.doC.If.doesD.That.doeswastheideathewifethoughtofA.What.thatB.That.whatC.How.whydidhetellhiswifehewishedtodoA.That.whatB.What.thatC.WherewhichD.Why.howD.WhichwhereOneofthemenheldtheviewthebooksaidwasright.whatthatthatwhatthatwhichwhichthatHedidntknowwhichroom

25、Ihavenoideaornothehasfinishedthework.A.ifB.thatC.whetherD.which“Doyouknow“Hisfatherisadoctor.”B.whoishisfatherD.whohisfatherisA.whatishisfatherC.whathisfatherisIsthiswemeteachothertwoyearsagoD.placewhichD.isthoughtthatA.placeB.placeinwhichC.whereItBobdrivesbadly.A.thinksthatB.isthoughtwhatC.thoughtt

26、hatWeallknowthetruththereareair,waterandsunlighttherearelivingthings.D.thatwhereverA.whereB.whereverC.thatTheydiscussedtheycouldsettletheproblemwithoutothershelp.A.ifB.thatSheasked.A.whatIwasdoingwhensherangmeupC.whensherangmeupwhatIwasdoing47.MayIborrowtheringYoucantakeyoulike.nomatterwhatB.whichHe

27、saidthathewasfondofwhatbeautifulisC.beautifuliswhatC.whatD.whetherwhatwasIdoingwhensherangmeupD.whendidsheringmeupwhatIwasdoingD.thatwhatisbeautifulD.whatitisbeautifulC.whichever1名词性从句详细讲解1 /8 /8Heinsistedthatheingoodhealthandtoworkthere.A.was,besentB.is,issentC.be,wassentD.be,sendDoyouknowheexpects

28、willgiveusatalkA.whoB.whomC.thatD.whoseItsuncertaintheexperimentisworthdoing.A.ifB.thatC.whetherD.howTheywouldhavefixedthetelephoneyesterdayitwasaholiday.A.exceptB.exceptforC.exceptthatD.butforistodogoodalloneslifeandneverdoanythingbad.A.WhicheverishardB.NomatterwhatishardC.WhatishardD.Allwhatishard

29、theboydidnttakemedicinemadehismotherangry.A.ThatB.WhatC.HowD.WhichAsthedaywasfine,Imadethesuggestionforawalkinthepark.A.wegoB.wewillgoC.shouldwegoD.thatwegowecantgetseemsbetterthanwehave.A.What,whatB.What,thatC.That,thatD.That,whatyoudontlikehimisnoneofmybusiness.A.WhatB.WhoC.ThatD.WhetherYoucantima

30、ginewhentheyreceivedtheseniceChristmaspresents.A.howtheywereexcitedB.howexcitedtheywereC.howexcitedweretheyD.theywerehowexcited59.wellgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where60.hereallymeansishedisagreeswithus.A.WhatthatB.ThatwhatC.WhythatD.Ifwhat61.isgoingtodothejobwillbedeci

31、dedbythePartycommittee.A.ThatB.WhyC.HowD.Who62._wellfinishtranslatingthebookdependsonthetime.A.WhenB.WhyC.WhatD.That63._thehousewillbebuiltwillbediscussedattomorrowsmeeting.A.IfB.WhereC.ThatD.What64._hewontgothereiscleartoallofus.A.HowB.WhatC.WhyD.This65._youcomeornotisuptoyou.A.WhatB.IfC.WhyD.Wheth

32、er66._makesmistakesmustcorrectthem.A.WhoB.AnyoneC.WhoeverD.Anybody67._teamwillwinthematchisamatterofpublicconcern.A.WhichB.ThatC.IfD.How.Threedayslater,wordcameourcountryhadsentupanotherman-madesatellite.A.whichB.whenC.thatD.where.Theproblemiswillgotothemeeting.A.whyB.whenC.whatD.who70.Itlooksitwere

33、goingtorain.A.evenifB.asifC.eventhoughD.like71.Thatis_helikestheplacesomuch.A.thatB.whatC.whyD.how72.ThatisLuXunoncelived.A.whatB.whereC.thatD.why73.Wethought_strangethatTomdidnotcomeyesterday.A.thatB.itC.thisD.what.Thefactshehadnotsaidanythingsurprisedallofus.A.whichB.whatC.thatD.how.WhatImconsider

34、ingnowthemoneyweneed.A.isB.areC.wereD.was.CanyoutellmeA.whoisthatgentlemanB.thatgentlemaniswhoC.whothatgentlemanisD.whomisthatgentlemanleavestheroomlastoughttoturnoffthelights.A.AnyoneB.ThepersonC.WhoeverD.WhoItiswellknownapersoneatscauseschangesinthebody.A.thatwhat,when,andhowB.thatC.whatD.howTheen

35、ergyismakesthecellsabletodotheirwork.A.thatB.whichC.whatD.suchJackwassoontoldhedidwasnotnecessary.A.whyB.thatC.howD.whywhatWeshouldthinkcarefullyaboutMr.Needhamsaidatthemeeting.A.thatB.whatC.whichD.XCanyoupointouttworadiosarethebestA.whichB.whatC.thatD.whetherYouwilleasilyknowvideorecorders（录相机）aret

36、hesame.A.whatthoseB.thatofthoseC.thatallofD.whichofthoseyouhaveseenthingslikethesebeforedoesntmatter.A.IfB.WhetherC.WhatD.WhenIaskedherinEnglishshewas,andshetoldmeshewasanactress.A.who.thatB.who.XC.what.XD.how.thatShetookitforgrantedIdbebackhomeanhourago.A.thatB.whetherC.ifD.whenWethinkitpossiblethe

37、localgovernmentwillbeabletosolvethehousingproblem.A.forB.thatC.whenD.howNowthereisadangerthegroundmayfallin（沉下）undertheheavytraffic.A.whetherB.ifC.XD.thatAtthattimeIhadnoideaIcouldhandittohimwithoutbeingseen.A.ifB.howC.whichD.thathowLastSundayhepromisedtoday,buthehasntappearedyet.thathewouldcomethathewillcomeC.hewillcometoseemeD.whetherhewouldcomeLastSundayhemadeapromisehewasfreehewouldtakemetoQingdao.A.ifB.thatC.thatifD.whetherDoyou