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1、Grammar同位语从句appositiveclauseItislikelythatNativeAmericanswerelivinginCaliforniaatleastfifteenthousandyearsago.WhetherJohn will do this experiment remains a question.主语从句Nobodyknewwhetherhecouldpasstheexam.宾语从句主语从句Thatiswhytodayover40%ofCaliforniansspeakSpanishasafirstorsecondlanguage
2、.表语从句Payattentiontowhattheteachersaid介词的宾语从句Thenewsthatourteamhaswonthematchistrue.同位语从句名词性从句主语从句宾语从句表语从句同位语从句名词性从句的连接词连接词：that,whether,if连接代词：what(ever),who(ever),whom,whose,which连接副词：when,where,how,why1.that只起连接主句和从句的作用，在从句中不充当成分，没有词义，在____________从句中经常可省略。that引导_____________从句、___
3、__从句和____________从句时,that不可省略。2.连接副词有词义，在从句中担任成分，作状语。宾语主语表语同位语3.当从句缺少成分时，指物用what引导，指人用who/whom引导。Idon’tknow__________helikes.What/who(一)主语从句：在复合句中作主句的主语。为了避免主语过长，句子头重脚轻,通常用It作形式主语代替主语从句。1.Whathewantstotellusisnotclear.转换为it作形式主语：Itisnotclearwhathewantstotellus.(二)宾语从句：在复合句中作主句的宾语。(三)
4、表语从句：在复合句中作主句的表语。表语从句一般结构是“主语＋连系动词＋表语从句”。接表语从句的连系动词有be,look,remain,seem等。另外，常用的还有Thereasonisthat…、Itisbecause…、Thereasonwhy…isthat…和Itiswhy…等结构。That属于从属连接词，在宾语从句中没有实际意义，只是起引导作用，常可以省略。*Weknew(that)hehadmadeamistake.Thereasonisthat______________________理由是我不相信他Itisbecause______________
5、______那是因为他太蠢了。Thereasonwhy______________________isthat_____________________________你必须学习英语的原因是英语越来越重要了。Itiswhy_________________________这就是我们必须学习英语的原因。Idonotbelievehim.heistoofoolish.youhavetostudyEnglishitbecomemoreandmoreimportant.wehavetolearnEnglish.语法精解(一)1.同位语theAppositive同位语是句
6、子成分的一种,它位于名词、代词后面,说明它们的性质和情况,它可以由名词、代词、名词性短语或从句充当。同位语的表现形式有以下几种：(1)名词Tom,ourmonitor,isahandsomeboy.(2)代词Imyselfwilldotheexperiment.(3)数词Sheistheoldestamongthemsix.(4)名词词组MrSmith,afootballfan,oftenwatchesfootballgamesonTV.(5)从句Hetoldmethenewsthattheplanehadexploded.他告诉我飞机爆炸的消息。Theking
7、’sdecisionthattheprisonerwouldbesetfreesurprisedallthepeople.Weheardthenewsthatourteamhadwon.Theywereworriedoverthefactthatyouweresick.TherewasasuggestionthatBrownshouldbedroppedfromtheteam.同位语从句同位语从句：在复合句中作同位语的从句。同位语从句是对于抽象名词进一步解释，一般由that引导(同位语从句的that通常不能省略）可以跟同位语从句的名词fact,news,doub
8、t,hope,sugge
