(完整版)高中名词性从句讲解与练习

名词性从句名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。（一）引导名词性从句的连接词1、连接代词： who,whose,whom,what,which。有词义，在从句中担任成分，如主语、表语、宾语、或定语等。2、连接副词：when,where,why,how。有词义，在从句中担任成分，作状语。3、连接词： that,whether,if,asif。that无词义，在从句中不担任成分， 有时可省略；if（whether）,asif虽有词义，但在从句中不担任成分。注意：连接代词与连接副词在句中不再是疑问句， 因而从句中谓语不用疑问式。 连接代词与连接副词在从句充当句子成分，连接词 whether和if（是否），asif（好象）在从句中不充当句子成分，只起连接作用。根据句义，如果连接代词与连接副词， whether、if和asif都用不上时，才用 that作连接词（ that本身无任何含义） 。（二）主语从句1、主语从句在复合句作主语。e.g.Whowillgoisnotimportant.2、用 it作形式主语，主语从句放在句末。e.g.Itdoesn’tmattersomuchwhetheryouwillcomeornot.3、that引导主语从句时，不能省略。e.g.Thathesuddenlyfellilllastweekmadeussurprised.（三）表语从句1、表语从句在复合句中作表语，位于系动词之后。e.g.Thequestionwaswhocouldgothere.2、引导表语从句的连接词 that有时可省去。e.g.Myideais（that）wecangetmorecomradestohelpinthework.（四）宾语从句1、宾语从句在复合句中作宾语。引导宾语从句的连词 that一般可省略。e.g.Ihope（that）everythingisallright.2、介词之后的宾语从句，不可用 which或if连接，要分别用 what或 whether。e.g.I’minterestedinwhetheryou’vefinishedthework..I’minterestedinwhatyou’vesaid.3、whether与if都可以引导宾语从句，常可互换。但下面情况不能互换。①宾语从句是否定句时，只用if,不用whetheroe.g.Iwonderifitdoesn ’train.②用if会引起误解，就要用 whether。e.g.Pleaseletmeknowwhetheryouwanttogo.（此句如果把 whether改成if，容易当成条件句理解）③宾语从句中的whether与ornot直接连用，就不能换成 if;不直接连用，可换。e.g.Idon’tknowwhetherornotthereportistrue.Idon’tknowwhether/ifthereportistrueornot.④介词后的宾语从句要用 whether引导。whether可与不定式连用。 whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成 if。但引导条件从句时，只能用if,而不能用whether.e.g.Itdependsonwhetherwehaveenoughtime.

Theydon’tknowwhethertogothere.Pleasecometoseemeifyouhavetime.（五）同位语从句news,fact,idea,suggestion,同位语从句在句中作某一名词的同位语，一般位于该名词（如：news,fact,idea,suggestion,promise等）之后，说明该名词的具体内容。e.g.Ihavenoideawhenhewillbeback.Thefactthathehadnotsaidanythingsurprisedeverybody.练习：名词性从句一、判断下列各句哪句含有名词性从句，并指出是什么从句：Chinaisnolongerwhatitusedtobe.Thetruththattheearthturnaroundthesunisknowntoall.Itwassnowingwhenhearrivedatthestation.Howhepersuadedthemanagertochangetheplanisinterestingtousall.Thenewsthattheyhadwonthegamesoonspreadoverthewholeschool.Thenewsthatyoutoldmeyesterdaywasreallydisappointing.ThatiswhereLuXunusedtolive.Hespokeasifheunderstoodwhathewastalkingabout.DoyouremembertheteacherwhotaughtusEnglishatmiddleschool?Iwonderwhysherefusedmyinvitation.二、用适当的连词填空：Ican’tdecide dictionaryIshouldbuy.That’s herefusedmyinvitation.Iamveryinterestedin hehasimprovedhispronunciationinsuchashorttime. weneedismoretime.Thefact shehadnotsaidanythingatthemeetingsurprisedeverybody. and theywillmeethasnotbeendecidedyet.Pleasetellme youarewaitingfor.Isthat youarelookingfor?Wouldyoupleasetellme thenearestpostofficeis?1.Doyousee_ Imean?A.that1.Doyousee_ Imean?A.thatB./2.Tellme isonyourmind.A.thatB.what3.Wemuststickto_____wehaveA.whatB.that三、选择填空：C.how D.whatwhich D.whyagreedon.Letmesee .A.thatcanIrepairtheradioC.IcanrepairtheradioLetmesee .A.thatcanIrepairtheradioC.IcanrepairtheradioKeepinmind .A.thattheteachersaidC.thatdidtheteachersayB.whether-IcanrepairtheradiowhethercanIrepairtheradioB.whatdidtheteachersayD.whattheteachersaid

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