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1、★★★★★五星级名校冲刺第一品牌一对一个性化学科优化学案鹰击长空—基础不丢一、概述在复合句中具有名词的性质的作主语、表语、同位语、宾语的从句叫名词性从句。因此，我们把主语从句、表语从句、同位语从句和宾语从句这四种从句统称为名词性从句。ItisafactthatEnglishisbeingacceptedasaninternationallanguage.(主语从句)Thetroubleisthatshehaslosthisaddress.（表语从句）Theyhavenoideaatallwherehehasgone.（同位语从句）Doyourem
2、emberhowhecame?（宾语从句）二、主语从句(subjectclauses)1、概述在复合句中起主语作用的从句叫主语从句。引导主语从句的词有从属连词、关系代词、连接副词等。引导主语从句的关联词有从属连词that、whether，关系代词：who,what,which,whom,whose,whatever,whoever,whomever,whichever；关系副词：when,where,how,why,however,whenever,wherever等。Thatyoudon’tlikehimisnoneofmybusiness.W
3、hathesaidistrue.Whetherthefootballgamewillbeplayeddependsontheweather.2、从属连词that，whether引导的主语从句。从属连词that，whether在主语从句中的作用只是引导主语从句，它们在从句中不担任成分，不能省略。Whethershewillcomeornotisstillaquestion.Thattheywillgoiscertain.Whethershe'scomingornotdoesn'tmattertoomuch.3、it作形式主语引导主语从句。如果主语从
4、句太长，为避免句子结构头重脚轻，我们可用it作形式主语，而把主语从句放在主句谓语部分之后。That引导的主语从句可用it代替，that不可省略。用作it作形式主语的结构：（1）Itis/was+形容词+that从句It’snaturalthat…很自然……It’sobviousthat…显而易见……（2）Itis/was+名词+that从句It’sapitythat…遗憾的是……It’safactthat…事实是……Believeinyourself!★★★★★五星级名校冲刺第一品牌（3）It+不及物动词+that从句Itseemsthat…似乎
5、……Itturnsoutthat…结果……（4）Itis/was+过去分词+that从句It’sreportedthat…据报道……It’sbelievedthat…据认为……Itisapitythatshehasmadesuchamistake.It'sstrangethathedidn'tcomeyesterday.4、由关系代词引导的主语从句。关系代词who,what,which,whom,whose,whatever,whoever,whomever,whichever等，引导主语从句时，它们分别在从句中担任主语、宾语或定语，不能省略。W
6、hoeverleavestheroomlastoughttoturnoffthelights.Whatyouhavedonemightdoharmtootherpeople.Whathesaidatthemeetingastonishedeverybodypresent.Whomadethelongdistancecallisnotimportant.5、关系副词引导的主语从句。连接副词有when,where,why,how,however,whenever,wherever等引导主语从句时，它们在从句中担任状语，不能省略。此类主语从句可以转换为
7、以it作形式主语的句子。Whyhedidn'tcomehereisnotcleartoanyone.Whereshehasgoneisnotknownyet.Whentheywillstarthasnotbeendecidedyet.三、表语从句1、概述用作表语的从句叫作表语从句，它位于主句中的连系动词之后。引导表语从句的词有从属连词that、whether、asthough(if)；关系代词who,what,which,whom,whose,whatever,whoever,whomever,whichever等；关系副词when,where,
8、why,how,however,whenever,wherever等。可以接表语从句的连系动词有be,look,remain,seem等
