高中英语 Unit1 Grammar课件 新人教版选修8.ppt

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1、Unit1AlandofdiversityGrammar—TheNounClauses名词性从句在句子中起名词作用的句子叫名词从句(NounClauses）。名词从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句(SubjectClause)、宾语从句(ObjectClause)、表语从句(PredicativeClause)和同位语从句(AppositiveClauseWhowillwinthematchisstillunknown.Iwanttoknowwhathehast

2、oldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主语从句宾语从句表语从句同位语从句SubjectClause(主语从句)ObjectClause(宾语从句)NounclausePredicativeClause(表语从句)主语从句一个句子在复合句中充当主语叫主语从句。e.g.Thattheearthisroundistrue.Whethershewillcomeornotisstillaquestion.Whatyouaredoingseemsverydifficult.W

3、hentheywillstarthasnotbeendecidedyet.引导主语从句的连词是不能省略的。ThattheearthisroundistrueThat-从句作主语通常用it作先行词，而将that-从句置于句末，例如：Itistruethattheearthisround.It'sapitythatyoushouldhavetoleave.你非走不可真是件憾事。Attention2.表示“是否”意义时，一般用whether而不用if引导主语从句，Whethershewillcomeornotisstillaquestion.但如果有形式主语it引导时，既

4、可用whether，也可用if。e.g.Itisstillaquestionifshewillcomeornot.3.有时可用形式主语it代替主语从句：e.g.Itisstillaquestionwhethershewillcomeornot.Ithasnotbeendecidedyetwhentheywillstart.用it作形式主语的that-从句有以下四种不同的搭配关系：It+be+形容词+that-从句Itisnecessarythat…有必要……Itisimportantthat…重要的是……Itisobviousthat…很明显……b.It+be+-

5、ed分词+that-从句Itisbelievedthat…人们相信……Itisknowntoallthat…从所周知……Ithasbeendecidedthat…已决定……c.It+be+名词+that-从句Itiscommonknowledgethat………是常识Itisasurprisethat…令人惊奇的是……Itisafactthat…事实是……d.It+不及物动词+that-分句Itappearsthat…似乎……Ithappensthat…碰巧……Itoccurredtomethat…我突然想起……1.____youdon’tlikehimisn

6、oneofmybusiness.A.WhatB.WhoC.ThatD.Whether2.____hesaidatthemeetingastonishedeverybodypresent.A.WhatB.ThatC.ThefactD.Thematter练一练！what与that在引导名词性从句时的区别:what引导名词性从句时在从句中充当句子成分,如主语,宾语,表语,表示…的.而that则不然,它在句子中只起连接作用,没有意义.(1)Whatyousaidyesterdayisright.(2)Thattheearthgoesaroundthesuniswell-kno

7、wntoeverybody.3.____leavestheroomlastoughttoturnoffthelights.A.Anyone B.ThepersonC.Whoever D.Who4._____thesportsmeetwillbehelddependsontheweather.A.WheneverB.IfC.WhetherD.That5.___isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It6.Whenandwhyheca