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1、英语主要从句精讲精练从句的基本构成形式：一、（引导从句的）关联词+陈述句常见的关联词：1、引导多种从句的常见关联词：what,when,where,who,which,why,how,that,as,since,whether,which,whatever,whenever,if,etc.2、引导一种从句（常为状语从句）的常见关联词：until,till,after,before,than,solongas,asfaras,assoonas,themoment,everytime,eachtime,asif,nowthat,evenif(thought),bythetime,in
2、orderthat,as…as,once,incase,immediately,howlong,etc.二、主语从句NOTICE:Whatweneedmostarebooks.主语从句三要素：1、关联词不能省略2、谓语动词用单数3、从句用陈述语序常见引导词:what,when,where，which,who,that，whether,how，whatever,whoeverWhetheritwilldousharmorgoodremainstobeseen.Iswhatyoutoldmereallytrue?Idon’tthinkthatwhateverhappensisrigh
3、t.三、表语从句:1、关联词不能省略2、从句用陈述语序常见引导词:what,when,where,why,whether,how,that,because,which,WhatsurprisedmemostwasthathespokeEnglishsowell.Thequestionishowwhatyou’vesaidcanbeputintopractice.Thereason(why)hedidn’tcomeisthathewasill.It(This,That)isbecauseironcontainsmorecarbonthansteel.四、同位语从句:1、关联词不能省
4、略2、从句用陈述语序从句的名词后接同位语:fact,idea,word，promise,saying，problem,news常见引导词:that,whether,where,how,etc.Thefactsthathesucceededintheexperimentpleasedus.Anideacametoherthatshemightdothatinanotherway.Scientistshavearguedovertheproblemwhetherthereislifeonotherplanets.五、宾语从句1.从句用陈述语序:Freemovieticketswill
5、begiventowhoevercomesfirst.Parentsgenerallybuywhicheverbookstheirchildrenwant.IrealizedthatwhatIsaidwasnotexactlywhatImeanttosay.Ioncereadthat“Thebeautyoflifeisitschanges“andthat“Theartoflifeliesinaconstantreadjustment(适应）tooursurroundings.”Sleep-teachingwillonlyhammerinto(强硬灌输）yourheadwhatyo
6、uhavestudiedalreadywhileyouareawake.2.it可做形式宾语代替宾语从句:Weallthoughtitapitythathedidn’tcome.六、名词性从句的综合问题１、whether与if:If只能引导宾语从句，不能引导主语从句、表语从句、同位语从句Thequestioniswhetheritisworthdoing２、which,what不能引导同位语从句，,what不能引导定语从句。３、whatever,whichever,whoever可以引导名词性从句，“一切，任何，无论”Whoevertelephones,tellthemI’mou
7、t.Whicheverdayyoucome,we’llbepleasedtoseyou.Whateverproblemyouhave,youcanalwayscometomeforhelp.七、What-clause1、what=somethingthat/which（即含“内容”）2、可以引导主语从句、表语从句、宾语从句：WhatmoneyIhavehasbeengiventoyou.3、在从句中担当主语、宾语、表语、定语：Showmewhatyouhavewritten.He
