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高考必考语法精讲精练语法专题十:名词性从句名词性从句是比较重要的语法项目。《2017年普通高等学校招生全国统一考试大纲》附录语法项目表中对名词性从句列了四项:主语从句、宾语从句、表语从句和同位语从句。全国卷新课标Ⅰ对名词性从句的考查一般在语
法填空和短文改错中,主要考查从句引导词的用法。2015年高考全国卷Ⅰ没有考查名词性从句。2016年高考全国卷Ⅰ第71题(短文改错)考查了宾语从句的引导词,Myuncleistheownerofarestaurantcl
osetothatIlive.本句中须将that改为where。2017年高考全国卷Ⅰ没有考查了名词性从句。在复合句中起名词作用的从句叫做名词性从句。名词可以充当句子的主语、宾语、表语和同位语,因此,名词性从句包括主语从句,宾语从句,表语从句和同位语从句。①Whatwasmosti
mportanttoherwasherfamily.(主语从句)②Idon’tknowwhatyouwanttosay.(宾语从句)③Thegoodnewsisthatwehavewonthegame.
(表语从句)④Thenewsthatwehavewonthegameistrue.(同位语从句)引导名词性从句的关联词:从属连词that,because疑问代词who,whom,whose,which,what,wheth
er,if疑问副词when,where,why,how,缩合连接词whatever,whoever,whomever,whichever,however,whenever,wherever关联短语asif,asthough注意:连词that在引导名词性从句时无词义,不充当句子成分,只起连接作用,在
主语从句、表语从句和同位语从句中不能省略,在引导宾语从句时,口语或非正式的文体中常被省去;疑问代词、疑问副词、缩合连接词以及关联短语在句中既保留自己的含义又起连接作用,在从句中充当成分。名词性从句一般都用陈述句...的语序,即使从句表达的是疑问含义。例如:①Thepro
blemiswhathehasdonetothelittleboy.②Wealldon’tknowwhenhewillcome.1.主语从句在复合句中作主语的句子叫主语从句主语从句通常由从属连词that,whether和连接代词what,who,wh
ich,whatever,whoever以及连接副词how,when,where,why等词引导。例如:①Thathestoleabikewastrue.②Whathewantstotellusisnotclear.③Whowillwinthematchisstillunknown.④W
heretheEnglisheveningwillbeheldhasnotyetbeenannounced.⑤Whetherhecanpasstheexamdependsonwhetherhestudyhardornot.⑥Whateveryoudoisnoneo
fmybusiness.⑦Whoevercomestoourlibrarywillbewelcome.单个的主语从句作主语时,谓语动词用单数形式。如果是两个或两个以上的主语从句作主语,谓语动词则用复数形式。例如:①Whereandwhenhe
wasbornhasnotbeenfound.②Whenthepersonwasmurderedandwhyhewasmurderedarestillunknown.主语从句比较长的时候,为避免句子头重脚轻,常用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。主句的谓语动词一般用单数形式。常用句型如下:(1)It+be+名词+主语从句。例如:①Itisafactthathehasgoneabroad.②Itisapitythatyoumissedt
hesportsmeetinglastweek.(2)It+be+形容词+主语从句。例如:①Itisobviousthathetoldalie.②Itiscertainthathewillwinthegame.(3)It+be+过去分词+主语从句。例如:①Itissaidthatsh
ewillcometothepartytomorrow.②Ithasnotbeenannouncedwhentheplanearetotakeoff.(4)It+不及物动词+主语从句。例如:①Ithappenedthatthemeetingwascanceledthatday.②Itocc
urredtomethatIhadforgottentobringmywallet.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,常用的句型是:Itisnecessary/important/natur
al/strange/essential,etc.)that…例如:①It’snecessarythatyoushouldstudyhard.②Itisstrangethatheshouldsayth
at.③Itisessentialthatacollegestudentshouldmasteratleastaforeignlanguage.2.宾语从句在复合句中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一样,在句中
可以作谓语动词或介词及非谓语动词的宾语。例如:①Iwanttoknowwhathehastoldyou.②Shealwaysthinksofhowshecanworkwell.③Shewillgivewhoeverneedshelpawarmsupport.1).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:Hehastoldme(that)hewillleaveW
uhanandthathewillgotoShanghaitomorrow.注意:在insist,suggest,advise,decide,demand,desire,require,request,o
rder,command等表示“坚持、建议、决定、要求、命令”(“坚决要命”)等意义的动词后,宾语从句中谓语部分常用虚拟语气,即should+动词原形。例如:①Iinsistthatshe(should
)doherworkalone.②Thecommanderorderedthattroops(should)setoffatonce.但是,如果suggest作“表明、暗示”讲,insist作“坚持说、坚持认为”讲,则其后的宾语从句中用陈述语气。例如:①Thesmileonhisface
suggestedthathehadpassedtheexamination.②Theboyinsistedthathehadnotstolenthemoney.2).用whether或if引导的宾语从句whether
和if均可引导动词后的宾语从句,常可互换。但从句中有ornot时或介词后的宾语从句中只能用whether连接。其它名词性从句,如主语从句、表语从句、同位语从句中表示“是否”只用whether.介词后的
宾语从句一般不用which和if引导,要用whether和what。that也很少引导介词宾语从句,只在except,but,besides等之后才用。例如:①Idon’tcareaboutwhetheryouhavemoneyornot.②E
verythingdependsonwhetherwehaveenoughmoney.③Heseldomloseshistemperexceptthatyoumakeafoolofhim.3).宾语从句中的时态呼应宾语从句的谓语动词时态受主句谓语动
词的影响,如果主句的谓语动词是一般现在时,从句中的谓语动词可以用各种时态。例如:①IknowthathestudiesEnglisheveryday.②IknowthathestudiedEnglishlastterm.③Iknow(that)he
willstudyEnglishnextyear.④WeallknowthathehasstudiedEnglishsince1998.如果主句中的谓语动词用了一般过去时,则从句中的语动只能用过去时的某种形式,如一般过去时,过去进行时,过去将来时等。例如:①Webel
ievedthathehadearnedenoughmoneytobuildahouse.②TheteachertoldusthatTomhadleftusforAmerica.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:Theteachertoldusthatthesunrisesintheeast.4).当主句是I/Wethink(suppose,expect,believe,guess,imagine)时,其后的宾语从句如果是否定形式,常把否定词not从从句中转移到主句中成
为否定的转移。例如:①Wedon’tbelievethathewillwinthegame.②Idon’tthinkhewilldoso.注意:doubt用于肯定结构时,后面用whether/if引导名词性从句;用于否定结构或疑问结构时,后面
用that引导名词性从句。besure用于肯定句或疑问句时,后接that引导的名词性从句;用于否定句时,后接whether/if引导的名词性从句。例如:①Idoubtwhetherhewillcometomorrow.②Thereisnodoubtthat
hewillcometomorrow.③Iamsurethathewillwinthegame.④Iamnotsurewhetherhewillwinthegame.3.表语从句在复合句中作表语的句子叫表语从句。表语从句常放在系动词之后。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,because引导。其基本结构为:主语+系动词+表语从句。例如:①Thefactisthatwehavelostthegame.②Th
at’sjustwhatIwant.③Thisiswhereourproblemlies.④Thatiswhyhedidn’tcometothemeeting.⑤Itlooksasifitisgoingtorain.⑥Thisisbecausehemissedthetrainb
yoneminute.注意:当主语是reason时,表语从句要用that引导而不是because。例如:Thereasonwhyhewaslatewasthathemissedthetrainbyoneminutethismorning.4.同位语从句在复合句中作同
位语的从句叫同位语从句。同位语从句用于解释说明其前面的名词的具体内容。同位语从句一般跟在某些表示抽象概念的名词后,如news,idea,information,fact,hope,thought,belief等,用来说明名词所表示的具体内容,引导同位语从句的连接词通常有
that,whether和连接副词when,where,why,how;连接代词who,what,whose,which也可以引导同位语从句。例如:①Thenewsthathewonthefirstplacewastrue.②It
isaquestionhowhedidit.③Theproblemwhetherweshouldcontinuetodotheexperimenthasbeensolved.④Wehaven’tsettledthequestionwherewearegoingtospendou
rsummervacation.⑤Ihavenoideawhenshewillbeback.⑥Thequestionwhoshoulddotheworkrequiresconsideration.同位语从句一般紧跟在被解释的名词之后,但有时候也可以分开,将从
句放在句末。例如:①Thesuggestioncamefromthechairmanthatthenewruleshouldbeadopted.②WordcamethatMr.Presidentwouldcomeandinspectourschool.5.同位语从句与定语从句的区别(
1)定语从句修饰限定先行词,它与先行词是修饰关系;同位语从句解释说明先行词的具体内容,它与先行词是同位关系。①TheplanethathasjusttakenoffisforParis.(定语从句)②Thef
actthathehasdiedisquiteclear.(同位语从句)(2)定语从句由关系代词或关系副词引导,关系词在从句中担当相应的句子成分................,关系代词在从句中作宾语时经常可省略。同位语从句主要由连词that引导,在从句中不充当句子成
分;where,when,how,who,whether,what等连词也可以引导同位语从句,这些连词则在从句中担当成分。①Thenewsthathetoldmeistrue.(定语从句)②Thenewstha
thehasjustdiedistrue.(同位语从句)③Theproblemthatwe’refacingnowishowwecancollectsomuchmoney.(定语从句)④Theproblemhowwecanco
llectsomuchmoneyishardtosolve.(同位语从句)⑤Thequestionthatheraisedpuzzledallofus.(定语从句)⑥Thequestionwhetherheissuretowinthegameishard
toanswer.(同位语从句)(3)同位语从句与先行词一般可以用be动词发展成一个完整的句子,而定语从句则不能。如:①Theideathatwecanasktheteacherforadviceiswon
derful.(同位语从句)→Theideaisthatwecanasktheteacherforadvice.②Thefactthattheearthmovesaroundthesunisknowntoall.(同位语从句)→Thefactis
thattheearthmovesaroundthesun.③Payattentiontotheproblemhowwecanprotectthewildanimals.(同位语从句)→Theproblemishowwe
canprotectthewildanimals.高考英语短文改错及语法填空分析与训练·名词性从句考点规律分析:名词性从句短文改错改错考点主要涉及从句引导词的误用、缺失以及多余。语法填空主要涉及从句引导词的选择。名词性从句单句改
错之真题训练:1.…butitdidn’tmatterthatIwouldwinornot.(全国卷)2..(2016·全国卷Ⅰ)MyuncleistheownerofarestaurantclosetothatIlive3.(2016·全国Ⅱ)T
hesummerholidayiscoming.MyclassmatesandIaretalkingabouthowtododuringtheholiday.4.Besides,Ihavefewfriends,Idon’tknowthattheydon’tliketotalkwit
hme.(全国卷)名词性从句单句改错之提升训练:1.It’suncertainthattheexperimentisworthdoing.2.Thatishardistodogoodallone'slifeandneverdoanythingbad.3.Whatt
heboydidn'ttakemedicinemadehismotherangry.4.Whathereallymeansiswhathedisagreeswithus.5.Ifwecanfinishtranslatingthebookdepends
onthetime.6.ThatisthatLuXunoncelived.7.Thefactwhichshehadnotsaidanythingsurprisedallofus.8.Thereisnodoubtwhetherhewillcometomorrow.9.Thereasonwhyhewa
slatewasbecausehemissedthetrainbyoneminutethismorning.10.Thathewantstotellusisnotclear.名词性从句单句语法填空之真题训练:1.(2016·全国Ⅰ,阅读B)Wenowrealize________impo
rtantfamilyisandhowimportanttobenearthem,especiallywhenyou’reraisingchildren.2.(2016·全国Ⅱ,阅读B)Membersl
eavebooksonparkbenchesandbuses,intrainstationsandcoffeeshops.________findstheirbookwillgotothesiteandrecordwheretheyfo
undit.3.(2016·全国Ⅱ,阅读D)Thejourneywasintendedtoachievemorethan________CaptainRobertFalconScotthaddone.4.(2016·北京,29)Themostpleasantthingoftherainy
seasonis________onecanbeentirelydust.5.(2016·四川,七选五)Scientistsarestillnotexactlysure________genesinfluenceaging,buttheybel
ievethattheydo.6.(2016·江苏,21)Itisoftenthecase________anythingispossibleforthosewhohangontohope.7.(20
15·湖南,26)Youhavetoknow________you'regoingifyouaretoplanthebestwayofgettingthere.8.(2015·北京,33)Itrulybelieve________beautyc
omesfromwithin.9.(2015·重庆,8)Wemustfindout________Karliscoming,sowecanbookaroomforhim.10.(2015·四川,8)Theexhibitiontellsus________weshoulddoso
methingtostopairpollution.11.(2015·安徽,25)Ashipinharborissafe,butthat'snot________shipsarebuiltfor.12.(2014·大纲全国,24)Exactly________thepotatowasintr
oducedintoEuropeisuncertain,butitwasprobablyaround1565.学习札记:参考答案及解析名词性从句单句改错之真题训练:1.that改为whether,whether与ornot搭配,表示“是否”2.that-wher
e考查从句连词。该句是宾语从句,意为“靠近我住的地方”,that改为where。3.how→what考查疑问词的用法。我和同学们正在谈论假期里做什么。固定表达whattodo,如何用how结构为howtodosth。4.that改为why,why引导宾语从句,表示原因名
词性从句单句改错之提升训练:1.that改为whether考查宾语从句引导词,whether表示“是否”2.That改为What,表示“......的事情”,引导主语从句3.What改为that,引导主语从句,不翻译,无
实际意义.4.第二个what改为that,引导表语从句5.If改为whether,表示“是否”,引导主语从句6.第二个that改为where,引导表语从句,其中where作从句的地点状语。7.which改为that,引导同位语从句。8.w
hether改为that,Thereisnodoubtthat......意为“毫无疑问”,用that引导同位语从句。9.because改为that,that引导表语从句。Thereasonwhy...Is/wasthat...为固定句式,意为
“......的原因是......”10.That改为What,引导主语从句,表示“......的事情”名词性从句单句语法填空之真题训练:1.how[考查宾语从句的连接词。根据后面的howimportant
可以看出此处也是填how。]2.whoever[考查名词性主句中的主语从句。句意:无论是谁发现了他们的书,都去那儿,并记录下他们是在哪儿发现的书。]3.what[考查名词性从句,引导词在从句中做haddone的宾语,故用what。]4.that[考查名词性从
句。句意:雨季最令人愉快的事情是人可以完全免于尘埃。分析句子结构可知is后的表语从句中不缺少成分,且句意完整,故选D]5.how[句意:科学家仍然不确定基因是如何影响人的年龄的,但是他们相信会影响。用how最为贴切。]6.that[考查主语从句的引导词。句意:通常情况下,对于那些
坚持希望的人来说,一切皆有可能。本句中的it为形式主语,真正的主语为后面的名词性从句,从句结构完整,不缺成分也不缺意义,故要用that引导。]7.where[句意:如果你要计划到达某地的最佳路线,你必
须首先知道你想要去哪?where引导宾语从句,在从句中用作地点状语。]8.that[句意:我真的相信美来自人的内心。宾语从句意思完整只缺连接词,故用that。]9.when[句意:我们必须知道他什么时候来,以便我们能给他预定房间。根据后面
的sowecanbookaroomforhim可知这里指时间,故用when引导。]10.why[考查宾语从句。句意:这个展览告诉了我们,我们为什么要阻止空气污染。宾语从句缺少状语,根据意义为why。]1
1.what[句意:船停放在海港里是很安全的,但这并非建造船的目的。该题考查表语从句。isn't后跟从句作表语,表语从句中的for后缺少宾语,用what引导,what与for连用,表示目的。What在句中既作连接词又作从句的中for的宾语。]12.when[考查名词性从句。句意:马
铃薯被引入欧洲的确切时间是不确定的,但是大约是在1565年。根据句意when引导一个主语从句,且在从句中作时间状语。故填when。]