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1、名词性从句NounClauses在复合句中起名词作用的从句叫作名词性从句。它在复合句中能担任主语，宾语，表语，同位语，介词宾语。根据在句中的语法功能，又可称为主语从句S,宾语从句O，表语从句P和同位语从句A，都相当于名词。S：Hisjobisimportant.Whathedoesisimportant.P:Thisishisjob.Thisiswhathedoeseveryday.O:Idon’tlikehisjob.Idon’tlikewhathedoeseveryday.A:Idon’tknowaboutt
2、heman,Mr.White.Idon’tknowaboutthefactthatheisateacher.判断下列句子分别是什么从句：1.Thatthebabycouldspeakmadehisparentsveryhappy.2.Iwanttoknowwhetheryouwillgoshoppingorstayathome.3.Thisiswhyhewasoftenlateforschool.4.Weallknowthetruththattheearthmovesaroundthesun.5.Itisnotc
3、learwhethershewillattendhiswedding.6.Ihavenoideawhenhewillreturn.7.TheproblemishowIcangetintouchwiththem.8.Iamthinkingaboutwhowillbegiventhejob.考点归纳：一．引导词连词：if，weather（引导一般疑问句）,that（引导陈述句）不做成分，只起连接作用。疑问代词：what,which,whose,whom,who,whatever,whichever,whomever,
4、whoever在从句中当主语或宾语。疑问副词：where,when,why,how,whenever,wherever,however在从句中常做状语。二．语序1.两种构成框架a.That＋陈述句Thatlighttravelsinstraightlinesisknowntoall.b.疑问句＋句子的剩余成分Thisiswhatwearelookingfor.2.疑问词引导的从句要使用陈述句语序Eg:①Howwashesuccessfulisstillapuzzle.Howhewassuccessfulissti
5、llapuzzle.②Canyoutellmewherehelives?Canyoutellmewheredoeshelive?三．名词性从句连接词的连用1.that和whether或if的连用a．当从句时表述一个事实的陈述句时用that引导4Thathegoesthefirstprizeinthecompetitionistrue.Shesensedthatshewasbeingwatchedbyatallmaninadarkcoat.Thetruthisthatthebuseswillnotberunning
6、.Theyaremadatthenewsthattheirteamhaswon.b.当从句时源于一个用yes或no回答的疑问句时用if，whether引导Whetherthebusinesswillstillberunningisnotclear.Myquestioniswhetheryoucanfinishtheworkontime.Iwanttoknow/Iwonder/Iannotclear/Idon’tknow/Imustfindout/itisnotclear,certain,decided…wheth
7、er.※that只在宾语从句中省略。①但用it做形式主语的宾语从句不能省。②并列的宾语从句中的后几个从句的引导词that不能省。2.that和what的选用都可引导所有的名词从句。但是，what除了起连接作用外，还在名词从句中充当成分，可做从句的主，宾或表。而that在名词性从句中不充当任何成分，只起连接作用，也可引导定语从句（what不行）。Eg:a.hewantsisabook.b.hewantstogothereisobvious.c.Theresultishewonthegame.d.Thisiswewa
8、nttoknow.e.Ishetoldustrue?f.Weshouldpayattentiontotheteacherissaying.g.Ihavenodoubthewillcome.h.Ihavenoideahedidthatafternoon.(What,that,that,what,what,that,what)3.if和whether的连用Whether基本通
