名词性从句主语+be+表语主语+do+宾语名词名词一一..什么叫“名词性从句”？什么叫“名词性从句”？名词性从句在功能上相当于名词名词性从句在功能上相当于名词主语{Hisjobisimportant.Whathedoesisimportant.表语Thisishisjob.Thisiswhathedoeseveryday.{宾语{Idon’tlikehisjob.Idon’tlikewhathedoeseveryday.同位语{Idon’tknowabouttheman,Mr.White.Idon’tknowaboutthefactthatheisateacher.主语谓语宾语从句主语从句谓语宾语主语谓语同位语从句主语系动词表语从句Weallknowthatheisafamoussinger.Thatheisafamoussingerisknowntousall.Weallknowthefactthatheisafamoussinger.Thefactisthatheisafamoussinger.宾语常见引导词：常见引导词：1）从属连词that只引导，本身无意义，仅起引导作用。（引导宾语从句时可可省，但是如果是并列的多个宾语从句，只能省第一个）2）连接代词who,whom,what,which,whoever,whatever,whichever等，有意义，作成分3）连接副词where,when,how,why等，有意义，在句中作状语4）从属连词if,whether（是否）(if只能引导动词、形容词之后的宾语从句)1.____hesaidhasnothingtodowithyou.2._________we’llstarttomorrowwillbetoldsoon.3.________hedidsuchathingsatisfiedme.4________wecanprotectculturalrelicsneedstobediscussed.whatwhenThatHowthatthat在以下情况下不能省略：在以下情况下不能省略：一、当动词后带有两个并列的宾语从句时，一、当动词后带有两个并列的宾语从句时，引入第二个从句的连词引入第二个从句的连词thatthat不可省略。不可省略。Theteachertoldthestudents(that)theyshouldTheteachertoldthestudents(that)theyshouldhandintheirhomeworkthenextdayandthathandintheirhomeworkthenextdayandthatthehomeworkmustbesignednamesbytheirthehomeworkmustbesignednamesbytheirparents.parents.老师告诉学生他们要在第二天交上老师告诉学生他们要在第二天交上作业，并且作业必须由家长签名。作业，并且作业必须由家长签名。二、当that前面有插入语时，that不宜省略。LittleAlicedidn'tknow,I'msure,thathersisterwasgoingtoAmerica.我确信，小艾丽斯不知道她的姐姐很快就要去美国了。三、当that宾语从句前有it作其形式宾语时，that不可省略。Wethinkitimportantthatcollegestudentsshouldmasteratleastoneforeignlanguage.我们认为大学生至少掌握一门外语是很重要的。注意：当名词性从句已有疑问词引导时，不可再加that。例如：Idon'tunderstandthatwhatyousaidjustnow.(×)Idon'tunderstandwhatyousaidjustnow.(√)whetherwhether与与ifif的辨用的辨用表“表“是否是否”时，在下列情况下用”时，在下列情况下用whetherwhether。。a.a.主语从句主语从句b.b.表语从句表语从句c.c.同位语从句同位语从句e.e.介词后的宾语从句介词后的宾语从句f.f.后接动词不定式后接动词不定式((whethertodowhethertodosth.)sth.)g.whetherornotg.whetherornot连在一起引导宾连在一起引导宾语从句时不用语从句时不用ififPracticetimePracticetimeif/whetherif/whether1.Iaskedher__________she1.Iaskedher__________shehadabike.hadabike.3.We3.We’’reworriedabout________reworriedabout________heissafe.heissafe.4.Idon4.Idon’’tknow___________heistknow___________heiswellornot.wellornot.5.Idon5.Idon’’tknow________ornottknow________ornotheiswell.heiswell.8.Idon8.Idon’’tknow_______togo.tknow_______togo.if/whetherwhetherwhether/ifwhetherwhether同位语从句与定语从句的不同之处1、从句的作用不同：同位语从句用来进一步说明前面名词的内容；定语从句用来修饰、限定前面的名词。e.g.Thenewsthatourteamhaswonthefinalmatchisencouraging.（从句说明“消息”的内容：我们队取得了决赛胜利。）Thenewsthatyoutoldusisreallyencouraging.（从句对“消息”加以限定：是你告诉我们的，而非来自其他渠道。但消息是何内容却不得而知。）2、引导从句的关联词that的功能不同：that引导同位语从句时是一个纯连词，不充当...
