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1、陕西省榆林育才中学高中英语Unit1Alandofdiversity语法导学案新人教版选修8学习目标:掌握名词性从句的用法学习重点:重点词汇的基本用法及阅读能力学习难点:重点单词的拓展用法【自主学习】StepI.WhatisNounClauses?在句子中起__________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________、_________、_________、_________、___________等,因此根据它在句中不同的语法功能
2、,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句1.Whowillwinthematchisstillunknown.___________从句。Iwanttoknowwhathehastoldyou._______________从句。Thefactisthatwehavelostthegame._____________从句。Thenewsthatwewonthegameisexciting.______________从句。StepII名词性从句主语从句:一个句子在复合句中充当主语叫
3、主语从句。e.g.Thattheearthisroundistrue.Whethershewillcomeornotisstillaquestion.注意:1.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.2.表示“是否”意义时,一般用whether而不用if引导主语从句,
4、Whethershewillcomeornotisstillaquestion.但如果有形式主语it引导时,既可用whether,也可用if。e.g.Itisstillaquestionifshewillcomeornot.3.有时可用形式主语it代替主语从句: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:a.It+be+形容词+
5、that-从句Itisnecessarythat… 有必要……Itisimportantthat…重要的是……Itisobviousthat… 很明显……b.It+be+-ed分词+that-从句Itisbelievedthat…人们相信……Itisknowntoallthat… 众所周知……Ithasbeendecidedthat…已决定……c.It+be+名词+that-从句Itiscommonknowledgethat………是常识Itisasurprisethat…令人惊奇的是……Itisafac
6、tthat… 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……e.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-kn
7、owntoeverybody.宾语从句:一个句子在复合句中充当宾语就叫宾语从句。Doyouknowwhereheis?I’mglad(that)youhavepassedtheexam.Idon’tknowwhether(if)youarewillingtohelpme.I’msorryforwhatIhavesaid.特别提示1.由连接词that引导宾语从句时,that在句中不担任任何成分,在口语或非正式的文体中常被省去,但如从句是并列句时,第二个分句前的that不可省。2.下列宾语从句必须用whet
8、her引导,不可用if:a. 从句后有or not 时,不可用if:Idon’tknowwhetherhewillcomeornot.b. 介词宾语通常用whether引导:Itdependsonwhetherheiscomingornot.c.后接动词不定式时。Canyoutellmewhethertogoortostay?3.用who,whom,which,whose,what,when,where,why,how,whoever,