GrammarWhatpartdoestheunderlinedpartserveasineachsentence?

Atreehasfallenacrosstheroad.

Youareastudent.

Tofindyourwaycanbeaproblem.

Smokingisbadforyou.GrammarWhatpartdoesthe1

“Howdoyoudo?”isagreeting.

Whatshesaidisnotyetknown.

Thatweshallbelateiscertain.

Itiscertainthatweshallbelate.

“Howdoyoudo?”isagr2主語從句

（NounClausesastheSubject）

定義：用作主語的從句叫主語從句，它是名詞性從句之一。引導主語從句的連接詞有：連詞that,whether；連接代詞who,what和which；連接副詞when,where,how和why。主語從句

（NounClausesastheSu31.連接詞：1）從屬連詞：that，whether等.that引導主語從句只起引導作用，本身無實際意義，在主語從句中不充當任何成分，但不能省略。

Thatshelefthimcuthimtotheheart.Thathewillcomeiscertain.1.連接詞：1）從屬連詞：that，whether等.Th42)連接代詞who，what，which,whatever,whichever,whoever

Whatseemseasytosomepeopleseemsdifficulttoothers.Whichsidewillwinisnotclear.由whether及其他連詞引導的主語從句放在句首，句后都可。

Whetheritwillpleasethemisnoteasytosay.2)連接代詞who，what，which,whatev53)連接副詞when，where，how，why等。Whyhediditremainsamystery.Whentheywillstartisnotknownyet.Howhebecameagreatscientistisknowntousall.2.位置：主語從句可以前置，也可以后置。用it做形式主語，而把主語從句，在句末，常用下面幾種句型。1）It+be+表語+主語從句表語：（名詞，形容詞，過去分詞）3)連接副詞when，where，how，why等。Wh6補充:一.幾種常見的含主語從句句型1.以it作形式主語，把主語從句后置的常用句型有：

1.It+be+形容詞+that從句Itis/wascertainthat–clauseclearimportantnecessaryprobablepossible補充:1.It+be+形容詞+that從句Itis/7（1）Itiscertainthatshewilldowellinherexam.（2）Itisprobablethathetoldmeeverything.（1）Itiscertainthatshewill82、It+be+名詞詞組+that從句Itis/wasapitythat–clauseshamedutyhouorfact2、It+be+名詞詞組+that從句Itis9(1)Itisapitythatwecan’tgo.(2)Itisnosurprisethatourteamshouldhavewonthegame.(3)ItisanhonorthatIwasinvitedtoattendthemeeting.(1)Itisapitythatwecan’t103、It+be+過去分詞+that從句Itissaidthat–clausereportedthoughthopedbelievedknown3、It+be+過去分詞+that從句It11(1)Itissaidthatheisthebeststudentintheclass.(2)ItisthoughtthatJoedrivesbadly.(1)Itissaidthatheisthe124、It+seem,happen,appear等不及物動詞+that從句。(1)ItseemsthatAliceisnotcomingtothepartyatall.(2)IthappenedthatIwasoutthatday.4、It+seem,happen,appear等不及13注意:1）主語從句在句首時，必須由連接詞引導，不能省略這些連接詞；但是如果用it做形式主語，而把主語從句放在句末時，從屬連詞that可以省略。注意:1）主語從句在句首時，必須由連接詞引導，不能省略這些連14誤：Theyshouldlikeeachotherisnatural.正：Thattheyshouldlikeeachotherisnatural.正：Itisnaturalthattheyshouldlikeeachother.誤：Theyshouldlikeeachother152)如果主語從句放在句首，不能用if引導，但是如果用it做形式主語，而把主語從句放在句末時，也可以用if引導.誤：IfMaryreallyheardhimisreallydoubtful.正：ItwasdoubtfulifMaryreallyheardhim.2)如果主語從句放在句首，不能用if引導，但是如果用it做163.用于Itisimportant/natural/necessary/impossiblethat...句型中,主語從句應使用虛擬語氣,謂語動詞用\“should+動詞原形\”的形式,should有時可以省略。3.用于Itisimportant/natural17Itisnecessarythattheproblem(should)bediscussedatonce.

立刻討論這個問題很有必要。

Itisnecessarythattheprobl184.在It+be+suggested/advised/ordered/requested/insisted/required中,that從句的謂語也應該用\“should+動詞原形\”的形式,should有時可以省略。4.在It+be+suggested/advis19Itissuggestedthatmoremodernscienceandtechnology____textbooks.A.addedtoB.beaddedtoC.isaddedtoD.areaddedtoItissuggestedthatmoremode20主語從句需注意的問題(1)主語從句中用陳述語序WhatsheisafraidofistheirtakinghertoParis.(Whatissheafraidof…Wrong)(2)主語從句后謂語動詞用第三人稱單數(shù)Thattheyhaven’tphonedisstrange.主語從句需注意的問題21It作形式主語和it引導強調(diào)句的比較It作形式主語代替主語從句，主要是為了平衡句子結構，主語從句的連接詞沒有變化。而it引導的強調(diào)句則是對句子某一部分進行強調(diào)，無論強調(diào)的是什么成分，都可用連詞that。被強調(diào)部分指人是也可用who/whom。例如：

It作形式主語和it引導強調(diào)句的比較It作形式主22Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.Itisinthemorningthatthemurdertookplace.ItisJohnthatbrokethewindow.Itisapitythatyoudidn’tg23what與that在引導主語從句時的區(qū)別what引導主語從句時在句時在從句中充當句子成分，如主語．賓語．表語，而that則不然。例如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.What在此引導主語從句,又做said的賓語That只起連接作用,不做成分what與that在引導主語從句時的區(qū)別What在此引241.Whereshallwespendtheholidayisn’tdecided.2.Youhavemadeamistakeisafact.3.Thatiscertainthatwecanwin.4.Nomatterwholeavestheroomlastoughttoturnoffthelights.5.Itisimportantthatastudentlearnsaforeignlanguage.weshallThatyouhaveItisWhoevershouldlearn改錯練習1.Whereshallwespendthehol251._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.4.________we’llgocampingtomorrowdependsontheweather.5.________leavestheroomlastoughttoturnoffthelights.ThatWhatWhetherWhetherWhoever1._____youdon’tlikehimi26

6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.7.Itworriedherabit____herhairwasturninggrey.8.TheForeignMinistersaid,“__isourhopethatthetwosideswillworktowardspeace.”

9.AfterYangLiweisucceededincirclingtheearth,____ourastronautsdesiretodoiswalkinspace.ItthatItwhat6.___isafactthatEngl271_____Fashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect.(00上海）AWhatB.ThatC.ThisD.Which1_____Fashiondiffersfromco282.Itisprettywellunderstood___controlstheflowofcarbondioxideinandouttheatmospheretoday.A.thatB.whenC.whatD.how

2.Itisprettywellunderstoo293.______wewillgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where4._______thattheycanpassthewrittenexamthistime.A.ThatishopedB.ItishopedC.IthopesD.Thathopes3.______wewillgocampingt305.____leavestheroomlastoughttoturnoffthelights.A.Anyone

B.ThepersonC.Whoever

D.Who6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.ItCD5.____leavestheroomla317.___inthenewspaperthatthepriceoffoodwillgoup.A.ItsaysB.ItissaidC.IthassaidD.Heissaid8.Itworriedherabit________herhairwasturninggrey.A.whileB.thatC.ifD.forBB7.___inthenewspapertha329.Thereisnodoubt________.A.thatMr.HansenisingoodhealthB.whetherisMr.HansenhealthyC.ifMr.Hansen'shealthwasreturningD.whetherMr.HanseninhealthA9.Thereisnodoubt____3310.TheForeignMinistersaid,“____ourhopethatthetwosideswillworktowardspeace.”

A.ThisisB.ThereisC.ThatisD.ItisD10.TheForeignMinistersai3411.Itisnecessarythatacollegestudent________atleastaforeignlanguage.

A.mastersB.shouldmasterC.masteredD.willmasterB11.Itisnecessarythata3512._____madetheschoolproudwas______morethan90％ofthestudentshadbeenadmittedtokeyuniversities.What;becauseWhat;thatC.That;whatD.That;because12._____madetheschoolpro36GrammarWhatpartdoestheunderlinedpartserveasineachsentence?

Atreehasfallenacrosstheroad.

Youareastudent.

Tofindyourwaycanbeaproblem.

Smokingisbadforyou.GrammarWhatpartdoesthe37

“Howdoyoudo?”isagreeting.

Whatshesaidisnotyetknown.

Thatweshallbelateiscertain.

Itiscertainthatweshallbelate.

“Howdoyoudo?”isagr38主語從句

（NounClausesastheSubject）

定義：用作主語的從句叫主語從句，它是名詞性從句之一。引導主語從句的連接詞有：連詞that,whether；連接代詞who,what和which；連接副詞when,where,how和why。主語從句

（NounClausesastheSu391.連接詞：1）從屬連詞：that，whether等.that引導主語從句只起引導作用，本身無實際意義，在主語從句中不充當任何成分，但不能省略。

Thatshelefthimcuthimtotheheart.Thathewillcomeiscertain.1.連接詞：1）從屬連詞：that，whether等.Th402)連接代詞who，what，which,whatever,whichever,whoever

Whatseemseasytosomepeopleseemsdifficulttoothers.Whichsidewillwinisnotclear.由whether及其他連詞引導的主語從句放在句首，句后都可。

Whetheritwillpleasethemisnoteasytosay.2)連接代詞who，what，which,whatev413)連接副詞when，where，how，why等。Whyhediditremainsamystery.Whentheywillstartisnotknownyet.Howhebecameagreatscientistisknowntousall.2.位置：主語從句可以前置，也可以后置。用it做形式主語，而把主語從句，在句末，常用下面幾種句型。1）It+be+表語+主語從句表語：（名詞，形容詞，過去分詞）3)連接副詞when，where，how，why等。Wh42補充:一.幾種常見的含主語從句句型1.以it作形式主語，把主語從句后置的常用句型有：

1.It+be+形容詞+that從句Itis/wascertainthat–clauseclearimportantnecessaryprobablepossible補充:1.It+be+形容詞+that從句Itis/43（1）Itiscertainthatshewilldowellinherexam.（2）Itisprobablethathetoldmeeverything.（1）Itiscertainthatshewill442、It+be+名詞詞組+that從句Itis/wasapitythat–clauseshamedutyhouorfact2、It+be+名詞詞組+that從句Itis45(1)Itisapitythatwecan’tgo.(2)Itisnosurprisethatourteamshouldhavewonthegame.(3)ItisanhonorthatIwasinvitedtoattendthemeeting.(1)Itisapitythatwecan’t463、It+be+過去分詞+that從句Itissaidthat–clausereportedthoughthopedbelievedknown3、It+be+過去分詞+that從句It47(1)Itissaidthatheisthebeststudentintheclass.(2)ItisthoughtthatJoedrivesbadly.(1)Itissaidthatheisthe484、It+seem,happen,appear等不及物動詞+that從句。(1)ItseemsthatAliceisnotcomingtothepartyatall.(2)IthappenedthatIwasoutthatday.4、It+seem,happen,appear等不及49注意:1）主語從句在句首時，必須由連接詞引導，不能省略這些連接詞；但是如果用it做形式主語，而把主語從句放在句末時，從屬連詞that可以省略。注意:1）主語從句在句首時，必須由連接詞引導，不能省略這些連50誤：Theyshouldlikeeachotherisnatural.正：Thattheyshouldlikeeachotherisnatural.正：Itisnaturalthattheyshouldlikeeachother.誤：Theyshouldlikeeachother512)如果主語從句放在句首，不能用if引導，但是如果用it做形式主語，而把主語從句放在句末時，也可以用if引導.誤：IfMaryreallyheardhimisreallydoubtful.正：ItwasdoubtfulifMaryreallyheardhim.2)如果主語從句放在句首，不能用if引導，但是如果用it做523.用于Itisimportant/natural/necessary/impossiblethat...句型中,主語從句應使用虛擬語氣,謂語動詞用\“should+動詞原形\”的形式,should有時可以省略。3.用于Itisimportant/natural53Itisnecessarythattheproblem(should)bediscussedatonce.

立刻討論這個問題很有必要。

Itisnecessarythattheprobl544.在It+be+suggested/advised/ordered/requested/insisted/required中,that從句的謂語也應該用\“should+動詞原形\”的形式,should有時可以省略。4.在It+be+suggested/advis55Itissuggestedthatmoremodernscienceandtechnology____textbooks.A.addedtoB.beaddedtoC.isaddedtoD.areaddedtoItissuggestedthatmoremode56主語從句需注意的問題(1)主語從句中用陳述語序WhatsheisafraidofistheirtakinghertoParis.(Whatissheafraidof…Wrong)(2)主語從句后謂語動詞用第三人稱單數(shù)Thattheyhaven’tphonedisstrange.主語從句需注意的問題57It作形式主語和it引導強調(diào)句的比較It作形式主語代替主語從句，主要是為了平衡句子結構，主語從句的連接詞沒有變化。而it引導的強調(diào)句則是對句子某一部分進行強調(diào)，無論強調(diào)的是什么成分，都可用連詞that。被強調(diào)部分指人是也可用who/whom。例如：

It作形式主語和it引導強調(diào)句的比較It作形式主58Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.Itisinthemorningthatthemurdertookplace.ItisJohnthatbrokethewindow.Itisapitythatyoudidn’tg59what與that在引導主語從句時的區(qū)別what引導主語從句時在句時在從句中充當句子成分，如主語．賓語．表語，而that則不然。例如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.What在此引導主語從句,又做said的賓語That只起連接作用,不做成分what與that在引導主語從句時的區(qū)別What在此引601.Whereshallwespendtheholidayisn’tdecided.2.Youhavemadeamistakeisafact.3.Thatiscertainthatwecanwin.4.Nomatterwholeavestheroomlastoughttoturnoffthelights.5.Itisimportantthatastudentlearnsaforeignlanguage.weshallThatyouhaveItisWhoevershouldlearn改錯練習1.Whereshallwespendthehol611._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.4.________we’llgocampingtomorrowdependsontheweather.5.________leavestheroomlastoughttoturnoffthelights.ThatWhatWhetherWhetherWhoever1._____youdon’tlikehimi62

6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.7.Itworriedherabit____herhairwasturninggrey.8.TheForeignMinistersaid,“__isourhopethatthetwosideswillworktowardspeace.”

9.AfterYangLiweisucceededincirclingtheearth,____ourastronautsdesiretodoiswalkinspace.ItthatItwhat6.___isafactthatEngl631_____Fashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect.(00上海）AWhatB.ThatC.ThisD.Which1_____Fashiondiffersfromco642.Itisprettywellunderstood___controlstheflowofcarbondioxideinandouttheatmospheretoday.A.thatB.whenC.whatD.how

2.Itisprettywellunderstoo653.______wewillgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where4._______thattheycanpassthewrittenexamthistime.A.T