名词性从句复习名词性从句:即指性质相当于名词的从句，它包括主语从句、宾语从句、表语从句和同位语从句。一、引导名词性从句的连接词连接代词：who,whom,whose,what,which,whoever,whatever,whichever连接副词：when,where,how,why,whenever,wherever,however连接词：whether,if“是否”不充当句子的任何成分。that只能起连接主句和从句的作用，不充当从句的任何成分，无词义。二、名词性从句的分类1.主语从句：用作主语的从句叫主语从句。Thatshelikessuchkindoffilmsisveryinteresting.Whetherhewillcomeremainsaquestion.Whatsheisdoingisnoneofyourbusiness.Whoevercomeswillbewelcome.Wherehehasbeenisstillapuzzle.Howeveryoudoitisallrightwithme.2.表语从句：表语从句在句中作表语，它位于主句的系动词之后。Theproblemisthatsmokerscannotgowithoutsmoking.问题是抽烟的人不抽烟就会感到难受。Thequestioniswhetheritisworthdoing.问题是这是否值得做。Chinaisnolongerwhatitusedtobe.中国已不是从前那个样子了。Thisiswherehehasworkedforyears.这就是他多年工作的地方。3.宾语从句：在句中可以作谓语动词或介词或某些形容词的宾语。Theyknowthatthehabitmaykillthem.TheydoubtwhetherornotJackisagoodstudent.Theteacherissatisfiedwithwhatshehassaid.I’mgladthatIcangowithyou.4.同位语从句:同位语从句说明其前面的名词的具体内容。可用于同位语从句的名词有advice,fact,demand,doubt,hope,idea,information,message,news,order,problem,promise,question,request,suggestion,truth,wish,word等。Thenewsthatwewonthegameisexciting.Ihavenoideawhenhewillcomebackhome.Wordcamethatourfootballteamhadwonthematch.三、名词性从句中的注意点主语从句：1.有时用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。常用句型如下。1)Itis+名词+that…(名词:apity/nowonder/apleasure)e.g.Itisapitythatmynewcomputerdoesn’twork.2)Itis+形容词+that…(形容词若是strange,necessary,important,natural…主语从句得用虚拟语气should+v.e.g.It’snecessarythatyoucompletethedesignbeforeNationalDay.3)Itis+过去分词+that…(常用动词:report,say,tell,believe,think…)e.g.It’ssaidthatthesportsmeetwillbeputoff.4)It+不及物动词+that…e.g.ItoccurredtomethatIhadtoldhimthenews.我突然想起来我已经告诉他这个消息了。2.使用主语从句应注意。1)从句作主语，谓语常用单数，但以what开始的主语从句，如后面的表语为复数时，谓语也用复数。e.g.Whathewantstobuyarethreebooksandtwoballpens.Whathewantedtoseewasanendtoallthearmiesoftheworld.2)that从句位于句首时，that绝对不能省略。Thatweareinvitedtotheconcertisgoodnewstous.3.It作形式主语和引导强调句的比较。It作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是强调句子某一部分，无论强调的是什么成分，都可用连词that。被强调部分指人时也可用who/whom。e.g.a)Itisapitythatyoudidn’tgotoseethefilm.你不去看那场电影真可惜。b)Itdoesn’tinterestmewhetheryousucceedornot.我对你成功与否不感兴趣。c)Itisinthemorningthatthemurdertookplace.谋杀案是在早上发生的。（强调句型）d)ItisJohnthatbrokethewindow.是John打碎的窗户。（强调句型）宾语从句：1.连接词that引导的宾语从句，若主句动词后有两个或以上的宾语从句，除第一个that外，其余均不可省。e.g.Iforgot(that)mypaperswasdueonTuesdayandthatmyteacherhadsaidhewouldnotacceptlatepapers.2.在demand,order,suggest,decide,insist,desire,request,command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+动词原形”。e.g.Iinsistthatshe(should)doherworkalone.我坚持要她自己工作。3.注意宾语从句中的时态呼应。1）当主句动词是现在时，从句根据自身的句子情况，而使用不同时态。e.g.HestudiesEnglisheveryday.（从句用一般现在时）e.g.HestudiedEn...
