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1、高一英語3名詞性從句講解在句子中起名作用的句子叫名從句(NounClauses〕。名從句的功能相當(dāng)于名,它在復(fù)合句中能擔(dān)任主、、表、同位、介等,因此依照它在句中不同的法功能,名從句又可分稱主從句、從句、表從句和同位從句?!疽弧恳詮木涞慕右詮木涞慕涌煞秩航樱簍hat,whether,if不充當(dāng)從句的任何成分〕接代:what,whatever,who,whoever,whom,whose,which.接副:when,where,how,why不可省略的:1.介后的2.引主從句和同位從句的不可省略。Thatshewaschosenmadeusveryhappy.Weheardthe
2、newsthatourteamhadwon.比:whether與if均“是否”的意思。但在以下情況下,whether不能被if取代:1.whether引主從句并在句首2.引表從句3.whether從句作介4.從句后有“ornot”Whetherhewillcomeisnotclear.大部分接引的主從句都能置于句末,用it充當(dāng)形式主。Itisnotimportantwhowillgo.Itisstillunknownwhichteamwillwinthematch.【二】名性that-從句1〕由從屬that引的從句叫做名性that-從句。That只起接主句和從句的作用,在從句中不擔(dān)任任
3、何成分,本身也沒有。名性that-從句在句中能充當(dāng)主、、表、同位和形容,例如:主:Thatheisstillaliveissheerluck.他活著全靠運氣。:JohnsaidthathewasleavingforLondononWednesday.翰他星期三要到敦去。表:Thefactisthathehasnotbeenseenrecently.事是近來也沒有他。同位:Thefactthathehasnotbeenseenrecentlydisturbseveryoneinhisoffice.近來也沒有他,一事令公室所有的人不安。形容:Iamgladthatyouaresatisfi
4、edwithyourjob.你工作中意我感到特快。2〕That-從句作主通常用it作先行,而將that-從句置于句末,例如:Itisquiteclearthatthewholeprojectisdoomedtofailure.特清晰,整個劃注定要失。It'sapitythatyoushouldhavetoleave.你非走不可真是件憾事。用it作形式主的that-從句有以下四種不同的搭配關(guān)系:a.It+be+形容+that-從句Itisnecessarythat?有必要??Itisimportantthat?重要的是??Itisobviousthat?特明??b.It+be+-ed分+
5、that-從句Itisbelievedthat?人相信??Itisknowntoallthat?從所周知??Ithasbeendecidedthat?已決定??c.It+be+名+that-從句Itiscommonknowledgethat???是常Itisasurprisethat?令人驚奇的是??Itisafactthat?事是??d.It+不及物+that-分句Itappearsthat?大概??Ithappensthat?碰巧??Itoccurredtomethat?我突然想起??【三】名性wh-從句1〕由wh-詞引導(dǎo)的名詞從句叫做名詞性wh-從句。Wh-詞包括who,whom
6、,.whose,whoever,what,whatever,which,whicheverwhere,when,how,why等接副。Wh-從句的法功能除了和等that-連接代詞和從句一外,可充當(dāng)介、和接等,例如:主:Howthebookwillselldependsonitsauthor.售如何取決于作者本人。直截了當(dāng):Inone'sownhomeonecandowhatonelikes.在自己家里能隨心所欲。接:Theclubwillgivewhoeverwinsaprize.俱部將得者。表:MyquestioniswhowilltakeoverpresidentoftheFo
7、undation.我的是將接任基金會主席位。足:Shewillnamehimwhatevershewantsto.她快他起什么名字就取什么名字。同位:Ihavenoideawhenhewillreturn.我不明白他什么候回來。形容:I'mnotsurewhysherefusedtheirinvitation.我尚不能確信她什么原因拒他的邀。介:Thatdependsonwhereweshallgo.那取決于我去哪兒。2〕Wh-從句作主也常用先