英语名词性从句知识归纳

完满版本英语名词优选性从句学习知识归纳完满版本英语名词优选性从句学习知识归纳完满版本英语名词优选性从句学习知识归纳名词性从句知识归纳名词性从句是指在句子中相当于名词的从句，主要包括主语从句、宾语从句、表语从句和同位语从句。名词性从句不是修饰性从句，而是复合句中的骨干。e.g.Thattheboyfailedagainintheexamdisappointedhismother.（主语从句）Iknowthatheiswritinghiscompositioninhisroom.（宾语从句）Thequestionishowwecanfinishitontime.（表语从句）ThefactthatsomeChinesearestillpoorisreallyagreatproblem.（同位语从句）名词性从句的连接词：从句有连接词的作用可否可否可否充当充当从句无疑问可否有含义引导可省从句中的中的哪一种含义从句略成分成分that无无是一般否无能够Iif（只用于宾语从句有“可否”是否否无中）,whetherasif/asthough“忧如”because（只用于表语无是否否无连“因为”从句中）接what,who,whom,词“什么，谁，哪个，主语，宾which,whose,II有谁的”，“任何事，任是否是语，表语，whatever,whoever,何人，任意哪个”定语whomever,whicheverwhen,where,why,“什么时候，地点，为什么，怎样”，“无IIIhow,whenever,有是否是状语论什么时候，无论wherever哪里”一、宾语从句---及物动词、介词、部分形容词（certain,sure,glad,afraid,frightened,happy,pleased,sad,sorry,surprised,upset,satisfied等）后e.g.Ibelieve(that)heishonest.(that不充当从句内的任何成分，一般情况可省略)I’mgladthatyouaresatisfiedwithyourjob.(that不充当从句内的任何成分)Hedoesn’tcareif/whetheritisn’tafineday(if/whether.不充当从句内的任何成分)Pleasetellmewhatyouwant.(what充当从句内的宾语)Shealwaysthinksofhowshecanworkwell.(how充当从句内的状语)Idon’tbelievewhateverhesaid.(whatever充当从句内的宾语，意为“任何事”)I’lltakewhoeverwantstogo.(whoever从当从句内的主语，意为“任何人”)【宾语从句要点拓展】1.that引导宾语从句时一般能够省略，若由and或or连接两个宾语从句时，第一个从句中的that能够省略，而第二个分句前的that不能省略。e.g.Hetoldme(that)theycouldnotdecidewhattodoandthattheyaskedmyadvice.2.whether和if引导宾语从句一般能够互换使用，但以下情况只能使用whether(1)whether可与ornot连用e.g.Iwanttoknowwhetherhewillseethefilmornot.1(2)介从句要用whethere.g.Idon’tcareaboutwhetheryouhavemoneyornot.(3)that引的从句只能放于in,except,besides和but四个介后e.g.TheSwedestoodstill,exceptthathislipsmovedslightly.3.移否定---当主句是I/Wethink(believe,consider,expect,suppose,guess,imagine)，以后的从句若是可否定形式，常把从句中的否定not移到主句中。e.g.Idon’tsuppose(that)itishisfault,isit?---从句的常碰到主句影响，若主句是在或将来，从句可用任何所需要的；若主句是去，从句一般用去的某种形式，如：一般去，去行，去将来等；当从句表示的是客真理，科学原理，自然象，从句仍用一般在。e.g.Iknow(that)hedidn’ttellyouwhathewouldcomethen.Webelievedthathehadearnedenoughmoneytobuildahouse.TheteachertoldusthatTomhadleftusforAmerica.Theteachertoldusthatthesunrisesintheeast.5.一种特别型的从句---在种句子里doyouthink等意插入，但主句，因此余下部分用述序Wh-+doyouthink/believe/consider/suppose/guess/suggest/feel/say+余下部分?e.g.Wheredoyouguessourartfestivalistobeheld?Whodoyouthinkthepublicmightchooseastheirfavoritesingerthisyear?二、主从句---位于句首，常用it做形式主e.g.Thathewillcomeandhelpyouiscertain.(that不充当从句内的任何成分，不能省略)Whetherthereislifeonthemoonisaninterestingquestion.(whether不充当从句内的任何成分，不能够用if)Whathewantstotellusisnotclear.(what充当从句内的)Whowillwinthematchisstillunknown.(who充当从句内的主)WheretheEnglisheveningwillbeheldhasnotyetbeenannounced.(where充当从句内的状)Whateverhesaidwasright.(whatever充当从句内的)Itisknowntoushowhebecameawriter.(it形式主，代替how引的主从句)【主从句要点拓展】1.it做形式主的构(1)It’sapity/ashame/anhonor/afact/nowonder/commonsense/goodnewsthat⋯憾的是（荣耀的是、事是、怪是、常是，好信息是⋯⋯）e.g.Itisapitythatyoudidnt’attendthelectureyesterday.(2)It’clear/sright/true/certain/necessary/(un)likely/important/(im)possible/obvious/remarkablethat⋯⋯⋯很清楚（正确，必要，重要，可能，得注意等)e.g.Itislikelythattherewillbeasnowstormtomorrow.(3)Itiswell-known/reported/recorded/estimated/said/believedthat⋯众所周知（据道，据，据估，据，据人相信)⋯e.g.Itissaidthathisfatherlefthimnothing.(4)Itturnsout/seems/appears/happens/matters⋯)that⋯果是⋯⋯（忧如是,碰巧是,重要的是⋯⋯）2e.g.Ithappened(tome)thatIhadbeenawaywhenhecalled.2.it做形式主与itis(was)⋯that⋯句式的区分e.g.Itisapitythatyoudidn’tgotoseethefilm.Itisinthemorningthatthemurdertookplace.解方法：将itis/was⋯that去掉，看余下部分可否完满，若完满即句式；反之it作形式主。三、表从句---系后（常系：be,look,remain,seem,appear等）e.g.Theproblemisthattheycan’tgethereearlyenough.Thequestioniswhetherwecanreducethecostoftheproduct.Itlooksasifit’sgoingtorain.Thequestioniswho(whichofyou)willbethenextspeaker.Whathewantstogetiswhateveryouhave.Thisiswhereourproblemlies.Thatiswhyhedidn’tcometothemeeting.四、同位从句---抽象名后（从句抽象名行充明或解明抽象名的内容）e.g.Thenewsthathehadlandedonthemoonspreadallovertheworld.ThethoughtcametohimthatMaryhadprobablyfallenill.Hemustanswerthequestionwhetherheagreestoitornot.Ihavenoideawhenhewillcomebackhome.3名词性从句高考趋势与察看要点一、序---名性从句内部一律使用述序注意以下句子：e.g.Idon’tknowhatisthematterwithhim.Ihavenoideawhatwasthematterwithhim.Couldyoutelluswhatwaswrong/thetroublewithhimyesterday?二、从句中的虚气1.主从句：(1)Itisimportant/natural/necessary/essential/strange/that⋯(should)do⋯(2)Itissuggested/advised/demanded/ordered/requestedthat⋯(should)do⋯e.g.Itisimportantthateverystudent(should)learnaforeignlanguage.Itissuggestedthatstudents(should)checktheiranswersbeforehandinginthepaper.2.从句：在表示“命令、要求、建、决定”等意的后的从句常用“（should）+do”【insist（持），order,urge,command（命令），require,request,demand（要求），advise,suggest,propose,recommend（建）】e.g.Thecommanderorderedthattroops(should)setoffatonce.Thedoctorsuggestedthathe(should)giveupsmoking.表从句：当主句的主order,command,requirement,request,demand,advice,suggestion,proposal,recommendation等名，表从句的用“(should)do”的形式。e.g.Myadviceisthatyou(should)takemorephysicalexercise.4.同位从句：用于解order,command,requirement,request,demand,advice,suggestion,proposal,recommendation等名的同位从句中常用“(should)do”构e.g.Englishteachersgiveadvicethatwe(should)makegooduseofeverychancetospeakEnglish.三、接的doubt---doubt用于必然构，后边用whether引名性从句；用于否定构或疑构，后边用that引名性从句。e.g.Idoubtwhetherhetoldthetruth.Idon’tdoubtthathetoldthetruth.Thedoctor’sdoubtiswhethermymotherwillrecoverfromthediseasesoon．IhavenodoubtthatTomisatalentedactor.2.sure---besure用于必然句或疑句，后接that引的名性从句；用于否定句，后接whether引的名性从句。e.g.I’msurethatI’vefoundtheanswertothisquestion.Areyousurethatyou’vefoundtheanswertothisquestion.I’mnotsurewhetherI’vefoundtheanswertothisquestion.3.主是reason，表要用that引而不是because：e.g.Thereasonwhyhewaslatewasthathemissedthetrainbyoneminutethismorning.4.what和that---that在从句中不充当成分，不含疑意，而what在从句中充当主、或表，且含有疑意。4e.g.ThatTomfelloffhischairbyaccidentgottheclassmateslaughing.WhatTomlearnedinuniversityhelpshimalotinhisjob.=AllthatTomlearnedinuniversityhelpshimalotinhisjob.接wh-和wh-ever---前者表示一个特指看法，引的名性从句含有疑意；后者表示一个泛指看法，意“任何⋯⋯”，引的名性从句不含有疑意，相当于名后加一个定从句。e.g.Itwasamatterofwhowouldtaketheposition.Sarahhopestobecomeafriendofwhoeversharesherinterests.(=anyonewhosharesherinterests.)Theywilldowhateverhewantsthemtodo.(=anythingthathewantsthemtodo)6.This/Thatiswhy⋯和This/Thatisbecause⋯e.g.ThereasonwhyIcamelateisthatmycarbrokedownonthehalfway.Hecamelate.That’becausehiscarbrokedown.→Hiscarbrokedownonthehalfway.That’whyshecamelate.几个特别句型之的ItisknowntoallthatChinahasjoinedtheWTO.（主从句，it做形式主）Asisknowntoall,ChinahasjoinedtheWTO.（as引的非限制性定从句）WhatisknowntoallisthatChinahasjoinedtheWTO.（主从句和表从句）四、it的it做形式主（注意与句式的辨）e.g.ItwasmyfaultthatIhadhimplayfootballallafternoon.Itisimportantthatweshouldgototheschooltotalkwiththeteacher.2.it做形式---V+it+adj./n.+todo/从(V能够make,find,feel,think,believe,consider,guess,suppose等)e.g