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当前位置:首页 > 中学教育 > 高中教育 > 名词性从句高三英语课件
名词性从句名词从句的功能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,名词从句又可分为四类。名词性从句表语从句宾语从句主语从句同位语从句引导名词性从句的连接词可分为三类:1.连接词that,whether,if(不充当从句的任何成分)2.连接代词:what,whatever,who,whoever,whom,whose,which.不仅起到连接一个句子的作用,同时也是从句的一个组成部分。3.连接副词:when,where,how,why引导名词性从句不可省略的连词:1.引导主语从句、表语从句和同位语从句的连词不可省略。2.介词后的连词表语从句Thefactisthathehasnotbeenseenrecently.表语从句在复合句中作表语的名词性从句,放在系动词之后,一般结构是“主语+连系动词+表语从句”。可以接表语从句的连系动词有be,look,remain,seem等。常用的还有thereasonisthat…和It/Thatisbecause等结构。例如:1)Thequestioniswhetherwecanmakegoodpreparationsinsuchashorttime.2)Thisiswhywecan’tgetthesupportofthepeople.3)Butthefactremainsthatwearebehindtheotherclasses.4)Thereasonwhyheislateforschoolisthathemissedtheearlybus.宾语从句Iworryaboutwhetherhecanpassthroughthecrisisofhisillness.宾语从句NowIwanttoknowwhatIcando.JohnsaidthathewasleavingforLondononWednesday宾语从句就是在复合句中作宾语的名词性从句,通常放在主句谓语动词(及物动词)或介词之后。1.作动词的宾语(1)由that引导的宾语从句(that通常可以省略),例如:Iheardthatbejoinedthearmy.(2)由what,whether(if)引导的宾语从句,例如:Shedidnotknowwhathadhappened.Iwonderwhetheryoucanchangethisnoteforme.(3)动词+间接宾语+宾语从句。例如:Shetoldmethatshewouldacceptmyinvitation.2.作介词的宾语,例如:Oursuccessdependsuponhowwellwecancooperatewithoneanother.主语从句Howthebookwillselldependsonitsauthor.Thatheisthebeststudentintheclassisobvious主语从句常用it作形式主语放句首因而我们常见到这种句式:It+be+n./adj/-ed从句(that,whether,etc.)例:It'sapitythatyoushouldhavetoleave.ItisgreatthatIhaveateacherlikeyou.It作形式主语和it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引导的强调句则是对句子某一部分进行强调,无论强调的是什么成分,都可用连词that。被强调部分指人是也可用who/whom。例如:Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.Itisinthemorningthatthemurdertookplace.ItisJohnthatbrokethewindow.主语从句不可位于句首的四种情况:(1)Itissaid/reported…结构中的主语从句不可提前。例如:ItissaidthatPresidentJiangwillvisitourschoolnextweek.ThatPresidentJiangwillvisitourschoolnextweekissaid.(2)Ithappens/occurs…结构中的主语从句不可提前。例如:Itoccurredtohimthathefailedintheexamination.Thathefailedintheexaminationoccurredtohim.(3)Itdoesn’tmatterhow/whether…结构中的主语从句不可提前。例如:Itdoesn’tmatterwhetherheiswrongornot.Whetherheiswrongornotdoesn’tmatter.(4)含主语从句的复合句是疑问句时,主语从句不可提前。例如:Isitlikelythatitwillrainintheevening?Isthatwillrainintheeveninglikely?√×√×√×√×what与that在引导主语从句时的区别what引导主语从句时在句时在从句中充当句子成分,如主语、宾语、表语,而that则不然。What引导的主语从句一般不可改为含形式主语的句子。例如:1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.Itisrightwhatyousaidyesterday.Itisaconsolationthatsheisstillalive.×√同位语从句同位语与其前的词或短语表达的是同一事物。如:Thefactthatsheisillshouldbeconsidered.1.同位语从句的功能同位语从句对于名词进一步解释,说明名词的具体内容,一般由that引导,例如:1)Theking’sdecisionthattheprisonerwouldbesetfreesurprisedallthepeople.2)Theorderthatallthesoldiersshouldstaystillisgivenbythegeneral.同位语从句就是在复合句中作名词的同位语的名词性从句。2.同位语在句子中的位置同位语从句有时可以不紧跟在它所说明的名词后面,而是被别的词隔开。例如:HegotthenewsfromMarythatthesportsmeetingwasputoff.同位语从句一般在下列词的后面belief,fact,fear,hope,idea,news,problem,reason,result,possibility等。如:Ihavenoideawhenhewillreturn.不同连词引导的同位语从句引导同位语从句的连词除that外,还可以用how,when,where,why,等。Hecan’tanswerthequestionhowhegotthemoney.1.Itisimportantthat______oureducationinallavailableways.A.wemustdevelopB.weshalldevelopC.wewoulddevelopD.weshoulddevelop2.Itisnecessarythat______bytheendoftheweek.A.wegoteverythingreadyB.wehavegoteverythingreadyC.wegeteverythingreadyD.wemustgeteverythingready3.Itwasnaturalthat_______.A.mypictureswouldsurprisethemB.mypicturessurprisedthemC.mypicturesshouldsurprisethemD.mypictureswouldhavesurprisedthem4.Iwonder_______.A.whetherornotI’llcatchthelastbusB.ifornotI’llcatchthelastbusC.thatI’llcatchthelastbusornotD.thatI’llcatchthelastbus5.Weallthought______apitythatwehadmissedthelesson.A.soB.suchC.itD.that6.Itook______forgrantedthattheywerenotcoming.A.thatB.thisC.itD.so7.Iheard______saidthathehadgreatconcernforhisclassmates.A.andB.thatC.wasD.it8.IwishI______tothefootballmatchlastnight.A.wentB.goC.shouldgoD.hadgone
本文标题:名词性从句高三英语课件
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