主語(yǔ)-表語(yǔ)-同位語(yǔ)從句講義-高三英語(yǔ)二輪復(fù)習(xí)

主語(yǔ)從句定義：在句子中作主語(yǔ)的從句叫做主語(yǔ)從句，按照引導(dǎo)詞分為以下幾種:連接詞that:引導(dǎo)的從句一般位于句首，that在從句中不作任何成分，沒(méi)有實(shí)際意義，只有連接作用。Thathewillcometothepartyhasexcitedeveryone.有時(shí)用it作形式主語(yǔ)，把從句后置,常見(jiàn)的結(jié)構(gòu)有：It’s+形容詞(obvious,true,surprising,good,wonderful,possible...)+that從句

Itiscertainthatshewilldowellinherexam.毫無(wú)疑問(wèn)她\t"/1270/18/_blank"考試成績(jī)會(huì)很好。

Itisprobablethathetoldhereverything.很可能他把一切都告訴她了。

It’s+名詞詞組(afact,anhonour,agoodthing,apity,nosurprise...)+that從句

It'sapitythatwecan'tgo.很遺憾我們不能去。

It'sanhonourthatourteamwinthegame.我們贏得這場(chǎng)比賽真榮幸。

It’s+過(guò)去分詞(said,reported,expected,decided,announced...)+that從句

ItissaidthatMr.greenhasarrivedinbeijing.據(jù)說(shuō)格林先生已經(jīng)到了北京。

Itisreportedthatcoralreefsarebeingdestroyed.據(jù)報(bào)道珊瑚礁正遭受破壞。It+seems/happens等不及物動(dòng)詞+that從句。

ItseemsthatAliceisnotcomingtothepartyatall.Alice似乎不來(lái)參加晚會(huì)。

IthappenedthatIwasoutthatday.碰巧我那天外出了。

2、if/whether:表示是否，在從句中不作任何成分，whether引導(dǎo)從句時(shí)可位于句首句末，但是if引導(dǎo)從句時(shí)只能用it作形式主語(yǔ)，從句后置。Whethertheworkcanbefinishedontimeisdoubtful.Itisdoubtfulif/whethertheworkcanbefinishedontime連接代詞&連接副詞連接代詞what/who/which/whose/whatever/whoever/whichever等；連接副詞when/where/why/how等，在從句充當(dāng)一定的成分。Whowilljoinushasnotbeendecided誰(shuí)將加入我們還沒(méi)被決定。Whathelikesmostisplayingcomputergames.他最喜歡的是玩游戲。Whenthenewroadisopenhasnotbeendecided.新道路什么時(shí)候開(kāi)通還沒(méi)決定。Whoeverwantstosuccessshouldworkhard.無(wú)論是誰(shuí)想成功必須努力工作。表語(yǔ)從句定義：在句子中作表語(yǔ)的從句叫做主語(yǔ)從句，按照引導(dǎo)詞分為以下幾種:連接詞1、that在從句中不作任何成分，只有連接作用。Thefactisthathedoesn’treallytry.

ThetroubleisthatIhavelosthisaddress.

whether是否（if不能引導(dǎo)表語(yǔ)從句）Thequestioniswhetherthefilmisworthseeing.asif/asthough好像，仿佛Itlooksasifitisgoingtorain.because因?yàn)镮amsleepy,anditisbecauseIstayeduplatelastnight.連接代詞&連接副詞連接代詞what/who/whom/which/whose/whatever/whoever/whichever等；連接副詞when/where/why/how等，在從句充當(dāng)一定的成分。ThisiswhatIaminterestedin.Thedoubtiswhohastakenawaythedocument.Thatwaswherewecampedlasttime.Thequestionishowwecandotheworkbetter.注意點(diǎn)：1、當(dāng)主句主語(yǔ)為reason時(shí)，表語(yǔ)從句引導(dǎo)詞需要用that，而不是why/because.Thereasonfortheaccidentisthatthedriverwasdrunk.事故的原因是司機(jī)酒駕。當(dāng)主句主語(yǔ)是advice/suggestion/request/order等表示命令建議的名詞時(shí)，從句的謂語(yǔ)常用：(should)+動(dòng)詞原形形式。Myadviceisthatwe(should)haveadiscussionaboutthismatter.同位語(yǔ)從句定義：同位語(yǔ)從句時(shí)用以解釋、說(shuō)明某一名詞的內(nèi)容的從句，在句子的作用等同于前面的名詞?？梢愿徽Z(yǔ)從句的名詞通常有news，idea，fact，promise，question，doubt，advice，hope，message，suggestion，words，possibility,decision等。連接詞that連接作用，沒(méi)有實(shí)際意義Thefactthatsomecountriesarestillsufferingpovertyisreallyabigproblem.whether“是否”（if不能引導(dǎo)同位語(yǔ)從句）Thereissomedoubtwhetherhewillcome.連接代詞&連接副詞連接代詞what/who/whom等（which不能引導(dǎo)同位語(yǔ)從句），在從句中充當(dāng)一定成分。Ihavenoideawhatsizeshoesshewears.Thequestionwhowilltakehisplaceisstillnotclear.連接副詞when/where/how/why等，在從句中充當(dāng)一定成分。Wehaven’tyetsettledthequestionwherewearegoingtospendourvacation.Thequestionwhymanypeoplechoosetoliveinthecountrysideisunderdiscussion.判斷技巧判斷從句所在位置：主語(yǔ)從句位于句首或者it作形式主語(yǔ)的句末；表語(yǔ)從句位于系動(dòng)詞后面；同位語(yǔ)位于常見(jiàn)的名詞后面（news、idea等，起到解釋說(shuō)明作用）。判斷從句缺少的成分以及句子的意思：缺少主語(yǔ)、賓語(yǔ)、表語(yǔ)、定語(yǔ)，考慮連接代詞；缺少狀語(yǔ)，考慮連接副詞；不缺少成分，考慮that/if/whether。習(xí)題_______youcomeornotwillnotmakeanydifference.WhetherB.ThatC.IfItissaid_______Mikewillcometomorrow.whetherB.thatC.whyItissurprising______myparentsgavemesuchagoodgift.thatB.whenC.if______willwinfirstprizeisuncertain.ThatB.WhoC.Where______wewillvisitShanghaimakesmeveryhappy.ThatB.WhetherC.When______causedtheaccidentremainsunknown.WhereB.WhenC.What______thishappenedisnotcleartoanyoneWhoB.HowC.What______dinosaursdiedoutremainsapuzzle.WhoB.WhatC.WhyThereasonwhyhefailedis______hewastoocareless.thatB.becauseC.whenIwaslateforclassthismorning.Thatis____mybikebrokedownonthewaytoschool.thatB.becauseC.whyThetroubleis_____Ihavelosthisaddress.thatB.whenC.whoThequestionis_____wegetthere,7:00or7:30.whetherB.whenC.whoItsounds_____youarefromthesouthoftheUS.asifB.whenC.who_____wantstobeamemberoftheteammustobeytherules.WheneverB.WhoeverC.WhatGrandmapointedtothehospitalandsaid,“Thatis_____Iwasborn.”whereB.whenC.becauseThefact_____sheworkshardiswellknowntous.thatB.howC.whetherHekepthispromise____hewouldalwaysdoanythingtomakesureofherhappinessthatB.whenC.whether18、Ihavesmalldoubt______heissuitableforthejob.A.thatB.whoC.whether19、Ihavenoidea______heisdoingnow.A.thatB.whatC.when補(bǔ)充合適的引導(dǎo)詞。Heexcitedlypulledhardatit,and__________hesawmadehimshout,“Wow!Abig,shinygoldchain!”whatExpertssaythat__________isneedediscontinuousattentionandmaintenance.whatProblemis__________istoblame,parents,studentsorothermembersofsociety.whoTheidea__________humansownadeepbiologicalneedtoconnectwithnaturehasbeencalled“Biophilia”thatThemostpleasantthingoftherainyseasonis

________onecanbeentirelyfreefromdust.thatThemanagerputforwardasuggestion_______weshouldhaveanassistant.Thereistoomuchworktodo.that

________weunderstandthingshasalottodowithwhatwefeel.HowExactly______thepotatowasintroducedintoEuropeisuncertain,butitwasprobablyaround1565.whenItisoftenthecase_______anythingispossibleforthosewhohang