Unit1AlandofdiversityGrammar---NounClauses导学案主备孙方岩审核甘忠清陶兰鲁宏杰Learningaims:1）TomastertheusagesofNounClauses2)TofinishtheexercisesonNounClausesStepIWarmingupWhatisNounClauses?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，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(AppositiveClause)Eg:1.Whowillwinthematchisstillunknown.___________从句。Iwanttoknowwhathehastoldyou._______________从句。Thefactisthatwehavelostthegame._____________从句。Thenewsthatwewonthegameisexciting.______________从句。StepIINounClauses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.Attention：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.你非走不可真是件憾事。2.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：a.It+be+形容词+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……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……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-knowntoeverybody.宾语从句一个句子在复合句中充当宾语就叫宾语从句。e.g.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whether引导，不可用if:a.从句后有ornot时，不可用if:Ido