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1、名词性从句名词性从句包括主语从句、宾语从句、表语从句和同谓语从句。一、连接词连接代词：that,what,who，which,whom，whose,whatever,whoever,whichever等连接副词：whether,how,why,when,where,wherever等二、连接代词（除that外）和连接副词在名词性从句中都有词义，它们除了引导名词性从句外，还在从句中充当成分，即做主语、宾语、表语、定语和状语。Whowillgothereisnotimportant.Whereshe
2、hasgonehasn’tbeenknownyet.Idon’tknowwhatIshoulddo.Heaskedwhosedictionaryitwas.Pleasetellmewhenweshalldiscussourworkplan.Ihavenoideahowsoontheyarecoming.要注意以下几点问题：1、连接代词‘that’的用法：在名词性从句中that9无词义，在从句中不充当任何句子成分，只起连接从句的作用，在宾语从句中，that在口语中可以省略。但在引导主语从句时不能省
3、略。Thathewaschosenmadeusveryhappy.Weheardthenewsthatourteamhadwon.Thetruthisthatheisthebestinhisclass.Hesaid(that)hewouldseemethenextweek.2、引导宾语从句的that可省略，但及物动词后有两个宾语时，可省略第一个that,不省略第二个that；如有形式宾语时，连接真正宾语的that不能省略。Theymadeitarulethattheygotupatsixever
4、yday.3、由连词that引导的名词从句很少做介词的宾语，只在except,but,besides介词后看到，其他一些介词的宾语从句如果由连词that引导，需用it作形式宾语。Thegirlhasnotchangedatallexceptthatsheisnolongersotalkative.Youmaydependonitthattheywillsupportyou.4、whether/if的用法9常用whether而不宜用if的情况：l引导主语从句，置于句首l引导表语从句l介词后的宾语从
5、句l与ornot连用l引导同位语从句l动词不定式前注意：doubt“怀疑”接宾语从句时，主句为肯定句用whether或if，主句为否定句或疑问句用that。Idoubtwhetheritistrueornot.Idoubtifitistrue.Idon’tdoubtthatwhathesaidiscorrect.Doyoudoubtthatwhathesaidiscorrect?三、使用名词性从句应注意的几个问题：1）名词性从句的语序必须是陈述句语序Idon’tknowwhichteamwill
6、winthematch.Thatiswhyhecamehere.Whoeverwillgoisnotimportant.92)主语从句、宾语从句如果太长，句子常显得笨重，因此，可把他们移到句子后面，前面用it作形式主语或宾语。Hetookitforgrantedthatwhathehaddonewasright.常用it作形式主语的句型lItbe+形容词（true,possible,probable…..）+that从句lItbe+名词词组（nowonder,apity,anhonor,nosu
7、rprise,asecret…..）that从句lItbe+过去分词（said,reported,thought,believed,notdecided,well-known…….）+that从句lItseems/happens/appears等不及物动词+that从句lItdoesn’tmatter/makesnodifference…..+连接代词或连接副词引导的从句l当that引导的主语从句出现在疑问句中时，用it作形式主语。Whomdiditsurprisethatthenaughtyb
8、oystudiedhardlater?93)what在名词性从句中有两种意思：“什么”或“所……的……”，前者已经失去了疑问词的含义。Idon’tknowwhattheyaredoing.Whatshesaidistrue.Whataretobediscussedatthemeetingwillbeannouncedtomorrow.Theproblemiswhatweshoulddonext.Letusseewhatwemeanby“matter”.Idon’tknowwhatbooksyou
