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1、名詞性從句NounClauses在英語(yǔ)的句子結(jié)構(gòu)中，本來(lái)該由名詞充當(dāng)?shù)闹髡Z(yǔ)、賓語(yǔ)、表語(yǔ)和同位語(yǔ)，由一個(gè)句子來(lái)充當(dāng),這個(gè)句子就叫名詞性從句。什么是名詞性從句?名詞性從句主語(yǔ)從句(TheSubjectClause)賓語(yǔ)從句(TheObjectClause)表語(yǔ)從句(ThePredicativeClause)同位語(yǔ)從句(TheAppositiveClause)1.Whenwewillstartisnotclear.2.MrsBlackwon’tbelievethathersonhasbecomeathief.3.Myideaisthatweshoulddoitrightnow.4.Ihadno
2、ideathatyouwereherfriend.主語(yǔ)從句賓語(yǔ)從句表語(yǔ)從句同位語(yǔ)從句I名詞性從句的種類主語(yǔ)從句在復(fù)合句中作主句的主語(yǔ).引導(dǎo)詞有連詞that(that不可省略),whether;連接代詞有who,what,which;連接副詞when,where,how,why等.如:1).連接詞:that,whetherHeisafamoussinger.Itisknowntous.1.Thatheisafamoussingerisknowntous.(Itisknowntousthatheisafamoussinger.)WillwevisittheGreatWalltomorrow?
3、Ithasnotbeendecided.WhetherwewillvisittheGreatWallhasnotbeendecided.IthasnotbeendecidedwhetherwewillvisittheGreatWall.2).連接代詞:who,whom,whose,what,which,whoever,whatever,whicheverWhosebagisit?Itcan`tbetold.Whosebagitiscan`tbetold.Itcan`tbetoldwhosebagitis.Whatdoesheneed?Itismoney.Whatheneedsismone
4、y.無(wú)論你剛才說(shuō)什么都是對(duì)的.Whateveryousaidisallright.3).連接副詞:when,where,why,how,howmany,howmuch,howlong,howsoon,howoftenWhenwillwestarttomorrow?Itwillbetoldsoon.Whenwewillstarttomorrowwillbetoldsoon.我們將怎樣制定計(jì)劃已經(jīng)被老師解釋清楚了.Howwewillmaketheplanhasbeenexplainedclearlybytheteacher.為什么他來(lái)這里還是不被人所知道.Whyhecomeshereisno
5、tknown.1.為什么有時(shí)侯用that,whether,有時(shí)侯用連接代詞,或著有時(shí)候用連接副詞?2.它的語(yǔ)序有沒(méi)有變化?2.總結(jié):1).主語(yǔ)從句一律用陳述句語(yǔ)序,即主語(yǔ)在前,謂語(yǔ)在后.2).連接詞that在從句中無(wú)實(shí)際意義,起引導(dǎo)作用,不作任何成分,但不能省略.Whenwillhecomeisnotknown.錯(cuò)誤Whenhewillcomeisnotknown.Hewillnotcometothemeetingthiseveningistrue.錯(cuò)誤Thathewillnotcometothemeetingthiseveningistrue.但是whatisthematter和wha
6、tiswrong不可改變語(yǔ)序3).whether可以引導(dǎo)主語(yǔ)從句解釋為”是否”,但if不能.4).whoever,whatever,whichever等詞可以引導(dǎo)主語(yǔ)從句,但nomatterwho,nomatterwhat等不能,它們只能引導(dǎo)讓步狀語(yǔ)從句.5).為避免主語(yǔ)冗長(zhǎng),句子頭重腳輕,經(jīng)常用it作形式主語(yǔ),主語(yǔ)從句放在后面作真正的主語(yǔ).例:Itiswellknown/reported/thought/said/…that…Itisclear/necessary/certain/true/doubtful/…that…Itisapity/ashame/anhonour/…that…I
7、tdoesn’tmatterwhether…/Itseemsthat…Ithappensthat…單個(gè)的主語(yǔ)從句作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞用單數(shù)形式。如果是兩個(gè)或兩個(gè)以上的主語(yǔ)從句作主語(yǔ)，謂語(yǔ)動(dòng)詞則用復(fù)數(shù)形式。Whereandwhenhewasbornhasnotbeenfound.Whenthepersonwasmurderedandwhyhewasmurderedarestillunknown.注意:在主語(yǔ)從句中用來(lái)表示驚奇、不相信、惋
