名詞性從句在句子中起名詞作用句子叫名詞性從句.1賓語從句；2主語從句；3表語從句；4同位語從句第1頁第1頁主語從句在另外一個句子中做主語句子叫主語從句。

Howthebookwillselldependsonitsauthor.

Thatheisthebeststudentintheclassisobvious

第2頁第2頁主語從句慣用it作形式主語放句首因而我們常見到這種句式：It+be+n./adj./-ed從句（that,whether,etc.)例：It'sapitythatyoushouldhavetoleave.=Thatyoushouldhavetoleaveisapity.ItisgreatthatIhaveateacherlikeyou.=ThatIhaveateacherlikeyouisgreat.第3頁第3頁

Ⅲ.主語從句連接詞一、主語從句連詞that(無詞義,不作成份,不能省略);whether(是否),if不能位于句首。Thathewillcomeandhelpusiscertain.Whetherwewillsucceedisstillaquestion.Itisnotknownifhewillcome.注意:已擬定事由that引導(dǎo);沒決定事由whether引導(dǎo).

第4頁第4頁3.連接副詞when,where，why,how,howlong,howoften,howsoon,howfar,howmany/much等.Whenthetestwillbegivenisnotyetdecided.Howmuchwecanspendmustbeagreedon.2.連接代詞what,whatever,who,whoever,whose,which,whichever等.Whatheishasnothingtodowithyou.Whoseticketthisishasnotbeenfoundout.第5頁第5頁特殊句式1.Ihate____

whenpeopletalkwiththeirmouthsfull．（MET98）A.it

B.thatC.theseD.them2.Ifeel____strangethatheshouldbesocareless.A./B.itC.thatD.how3.Itworriedherabit

____herhairwasturninggrey.（MET92）A．whileB.thatC．if

D．for第6頁第6頁第7頁第7頁同位語從句在一個更長句子中作同位語使用句子叫同位語從句。同位語與其前詞或短語表示是同一事物。如：Thefact

thatsheisillshouldbeconsidered.第8頁第8頁Thenews

thatourteamhaswonthematch

istrue.Hisdelayisdueto

thefactthatthecarwentwronghalfway.同位語從句同位語從句普通跟在名詞fact,news,promise,truth,belief,thought,idea,answer,information,doubt,knowledge,hope,law,opinion,plan,suggestion后面,用以闡明或解釋前面名詞.第9頁第9頁TheDifferencesBetweenAppositiveclausesandAttributiveClauses

如何區(qū)別同位語從句與定語從句第10頁第10頁同位語從句與定語從句不同之處1、從句作用不同：同位語從句用來深入說明前面名詞內(nèi)容；定語從句用來修飾、限定前面名詞。e.g.Thenewsthatourteamhaswonthefinalmatchisencouraging.（從句闡明“消息”內(nèi)容：我們隊取得了決賽勝利。）Thenewsthatyoutoldusisreally

encouraging.（從句對“消息”加以限定：是你告訴我們，而非來自其它渠道。但消息是何內(nèi)容卻不得而知。）第11頁第11頁2、引導(dǎo)從句關(guān)聯(lián)詞that功效不同：that引導(dǎo)同位語從句時是一個純連詞，不充當(dāng)任何成份；而引導(dǎo)定語從句that是關(guān)系代詞，既指代先行詞又須在從句中充當(dāng)成份。e.g.1)DadmadeapromisethathewouldbuymeCDplayerifIpassedtheEnglishtest.（that不充當(dāng)任何成份）2)Dadmadeapromisethatexcitedallhischildren.（that指代promise，又在從句中充當(dāng)主語。）第12頁第12頁高一英語語法同時輔導(dǎo)3、that引導(dǎo)同位語從句時是一個純連詞，故不能用which替換；而that引導(dǎo)定語從句時是代詞，常能夠和另一關(guān)系代詞which替換。e.g.ThefactthatheisfromCanadaisnewtome.（that不可換為which）ThefactthatsurprisedmeisthatheisnotChinese.（第一個that可換為which，第二個不行，由于它引導(dǎo)是表語從句。）第13頁第13頁4、引導(dǎo)同位語從句關(guān)聯(lián)詞，除that外，還可以依據(jù)句義使用任何其它疑問代詞或副詞；而定語從句不可用what,how,whether等引導(dǎo)。e.g.IhadnoideaatallwhatIshoulddonext.

Thereisnoproofwhetherhewaskilledbyothers.第14頁第14頁同位語從句定語從句引導(dǎo)詞that只起連接作用不充當(dāng)句子成份引導(dǎo)詞that除了引導(dǎo)句子外還充當(dāng)一定句子成份同位語從句與前面名詞是同位關(guān)系表示這個名詞內(nèi)容定語從句對先行詞起修飾作用，表示“…”。同位語從句that普通不能省而定語從句中關(guān)系代詞that，當(dāng)其在從句中做賓語時，常省略一.同位語從句PK定語從句第15頁第15頁PracticeI.Tellthefunctionoftheclausesinthefollowingsentences說出下列從句功效：A:Appositive（同位語）;B:Attributive（定語）Hisproposalthatwegothereonfootisacceptable.Manyteachersholdtheviewthatteenagersshouldnotspendtoomuchtimeonline.3.Thefirstrequestthathemadewastoaskforfreedom.4.Doyouhaveanyideawherewewillbesent?5.Isthisthecompanywhereyourfatherworks?6.Thisisthereasonthathegaveforhisabsence.7.Hemadeanexcusethathiscarbrokedownon

theway.第16頁第16頁1.Thenews____anotherpowerstationwillbebuiltcheeredallthevillagers.AwhichBthatCwhatDwhatever2Thenews____hetoldusisexciting.Whichofthefollowingiswrong?AwhatB\CwhichDthatExercisesBA第17頁第17頁II.Choosethebestanswer1.Theyexpressedthehope___theywouldcomeovertoChina.A.whichB.thatC.whomD.when2.Thefact___hedidn’tseeTomyesterdayistrue.A.thatB.whichC.whenD.what3.Ihavenoidea____hewillcomeback.A.whereB.whenC.whatD.thatBAB第18頁第18頁4.Thenews_____surprisedeverybodyyesterdaynowprovesto

befalse.A.thatB.whenC.whatD.how5.Oneofthemenheldtheview___thebooksaidwasright.A.whatthatB.thatwhichC.thatwhatD.whichthat6.Wordhascome_____someAmericanguestswillcomeforavisittoourcollegenextweek.A.whatB.whetherC.thatD.whichACC第19頁第19頁what與that在引導(dǎo)主語從句時區(qū)別what引導(dǎo)主語從句時在句時在從句中充當(dāng)句子成份，如主語、賓語、表語，而that則不然。What引導(dǎo)主語從句普通不可改為含形式主語句子。比如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveiscertain.Itisrightwhatyousaidyesterday.Itiscertainthatsheisstillalive.×√第20頁第20頁4._______Ican’tunderstandiswhyhehaschangedhismind.5.___________theearthisroundisknowntousall.歸納：WhatThat連詞_______在從句中不作成份，不含有疑問意義，而_____在從句中作成份，常含有疑問意義。thatwhat第21頁第21頁1）____youdon’tlikehimisnoneofmybusiness.（S92)A.WhatB.WhoC.ThatD.Whether

高考題選萃第22頁第22頁2)____hesaidatthemeetingastonishedeverybodypresent.(93)A.WhatB.ThatC.ThefactD.Thematter3)There’safeelinginme___we’llneverknowwhataUFOis---notever.(s）A.thatB.whichC.ofwhichD.whatAA第23頁第23頁2.Sara