搜索
从句名词性从句形容词性从句（定语从句）副词性从句（状语从句）主语从句表语从句宾语从句同位语从句时间条件目的原因让步结果地点方式NounClauses(名词性从句)SubjectClause(主语从句)AppositiveClause（同位语从句）ObjectClause（宾语从句）PredicativeClause（表语从句）Whowillwinthematchisstillunknown.Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主语从句宾语从句表语从句名词性从句的作用相当于名词，因此主语从句、表语从句、宾语从句和同位语从句分别作主句的主语、表语、宾语和同位语。同位语从句Grammar3.Tofindyourwaycanbeaproblem.2.Smokingisbadforyou.1.Youareastudent.4.“Howdoyoudo?”isagreeting.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itiscertainthatweshallbelate.Subject（主语）AsentenceservedassubjectiscalledSubjectClause.主语从句定义：主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。导主语从句的有连词that，whether，连接代词who，what，which，连接副词when，where，how，why等。1）从属连词：that，whether等.that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.注意:由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it为形式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.这样就构成了下面一些常用句型:1)Itis+n.+从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthatWhetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.whether引导主语从句只起引导作用，本身有实际意义，在主语从句中不充当任何成分，不能省略。.Itwasnotclearwhetherthesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.Real引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.Conclusion:ifIf×2)Itis+adj.+从句It’scertainthat…肯定…Itispossiblethat...很可能……Itisunlikelythat...不可能……Itisobviousthat…很明显…Itisnecessary\important\natural\...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat4)It+be+过去分词+从句Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据信……;人们相信……Itissuggestedthat+(should）do...建议……Itmustbeadmittedthat…必须承认……Itcannotbedeniedthat…不可否认……Itmustbepointedoutthat…需指出的是……*___________________(据报道)20peoplewerekilledintheaccident.*______________________(建议)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat：Theyshouldlikeeachotherisnatural.：Thattheyshouldlikeeachotherisnatural.：Itisnaturalthattheyshouldlikeeachother.：IfMaryreallyheardhimisreallydoubtful.：ItwasdoubtfulifMaryreallyheardhim.TorFquestions2.连接代词who，what，which,whatever,whichever,whoeverWhatmanyscientistsbelieveisthatthecontinuedpresenceofwater…Whowilltakepartinthemeetinghasnotbeendecided.Whoeverbreaksthelawwillbepunished.Whichstudentwillwinthefirstisuncertain.3)连接副词when，where，how，why等。Whytheysuddenlydisappearedstillremainsamystery.Whentheywillsetoffisnotdecided.Wheresheisfromisunknown.Howwewillpaintthehousehasnotbeendecided.Completethesentencesusingwhat,whether,where,when，who,why,howorthat.1.(_____isneededforsuccess)isyourhardwork.3.(wewillgotomorrow)hasn’tbeendecidedyet.2.(theywillarrive)hasbeentoldtotheteacher.WhatWhen/HowWhere/whether4.(______canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.7.(______theearthisasolidball)isknowntousall.WhoWhetherThat6.(____theearthisbecomingwarm)isagoodtopicforresearch.Why主语从句作主语时，谓语动词一般用单数形式。Conclusion:1.用that/whether/if//where/how/when/why/who/what/which/howmuch/etc.来连接主语从句.Summary:SubjectClause3.引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.2.That在主语从句中不能省略.4.有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面.4种句型。5.主语从句作主语时，谓语动词一般用单数形式。注意二：Whoever(无论谁)=anyone/anybodywho（谁）____leavestheroomlastoughttoturnoffthelights.A.AnyoneB.ThepersonC.WhoeverD.Who注意三：“疑问词+ever”引导主、宾、表、状语从句“Nomatter+疑问词”只引导状语从句无论谁违反法律将会受到处罚__________________willbepunished.______________________,hewillbepunishedWhoeverbreakslawsNomatterwhobreakslawsWhoeverbreakslaws主语从句状语从句逗号是状语从句的标志无论…2._______theycansolvethequestionisstillunknown.A.IfB.WhichC.WhetherD.What3._____hesaidatthemeetingastonishedeverybody.A.WhyB.WhatC.ThatD.Who4.____isafactthatEnglishisacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It1._____weneedmorepracticeisquiteobvious.A.WhatB.ThatC.WhenD./Correctornot?*Whenthemeetingwillbeheldhaven’tbeenknownyet.…………………………….beheldhasn’tbeenknownyet.×Payattention:主语从句的谓语用单数形式10thecatdomadeWhatthecatdidmadethebabycry.WhatcryMakeasentence301.Thequestionis________thefilmisworthseeing.2.________weshallattendthemeetinghasn'tbeendecidedyet.用whether\if填空whetherWhether10Translatethesentence*_______________________________(他们很需要帮助)isquiteclear.Thattheyarebadlyinneedofhelp20talkabouttheuseofcellphoneWhattheyaretalkingaboutistheuseofcellphone.Makeasentence30*Ifwewillhaveameetinghasn’tbeendecidedyet.×Correctornot?Whetherwewill………………………….decidedyet.Payattention:放在名词性从句句首，表示“是否”，只能用whether,不能用if10Translatethesentence*Itisknowntous___