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Grammarandusage---NounClauses名词性从句名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句可分为主语从句、表语从句、宾语从句和同位语从句。1.Whenwewillstartisnotclear.2.Shewon’tbelievethathersonhasbecomeathief.3.Myideaisthatweshoulddoitrightnow.4.Ihadnoideathatyouwereherfriend.主语从句宾语从句表语从句同位语从句I名词性从句的种类主语从句一般有三种结构：1.主语从句+谓语Thatshewillwinthematchiscertain.2.It+be+形容词（名词词组、过去分词）+that从句ItisimportantthatweteensshouldlearnEnglish.Itisgoodnewsthathewillattendthemeetingonbehalfofourschool.Itissaidthatourschoolwillholdasportsmeeting3.It+seem(happen，appear等不及物动词)+that从句ItseemsthatKatyisnotcomingtothisparty.宾语从句的结构主句+连接词(引导词)+宾语从句在句子中起宾语作用的句子叫宾语从句，宾语从句放在及物动词或介词之后作宾语。Idon'tknowwhyheisalwayslateforschool.Weallagreewithwhatyousaidatthemeeting.宾语从句表语从句表语从句位于连系动词后,有时用asif引导。其基本结构为:主语+系动词+that从句。1.be,look,remain,等系动词后均可跟表语从句：Mysuggestionisthatweshouldgoshopping.2.asif也可引导表语从句。Itlooksasifit’sgoingtorain.3.thereasonwhy…isthat…和Itisbecause…等结构。ItwasbecauseIgotuplate.同位语从句同位语从句在句中作同位语，它一般要放在主句中某些名词的后面，说明这些名词的含义。可跟同位语从句的名词主要有：fact,news,promise,reason,idea,hope,word,belief等。Beijing,thecapitalofChina,ismyhometown.Weheardthenewsthatourteamhadwon.Wewerehappytohearthenewsthatwasannouncedbyourboss.定语从句同位语从句同位语短语1.(2008山东)____wasmostimportanttoherwasherfamily.A.itB.thisC.WhatD.as2.(2009北京，31）Atfirsthehatedthenewjobbutdecidedtogivehimselfafewmonthstosee_____itgotanybetter.A.WhenB.howC.whyD.if3.(2006全国I,23）Seetheflagsontopofthebuilding?Thatwas_____wedidthismorning.A.WhenB.whichC.whereD.what4.(2009浙江，12）Isthereanypossibility_____youcouldpickmeupattheairport?---Noproblem.A.WhenB.thatC.whetherD.what主语从句宾语从句表语从句同位语从句☆☆☆☆I.名词性从句的引导词：1.连接词：that、if、whether不作成分无意义2.连接代词：who、whom、whose、what、which3.连接副词：when、where、why、how“是否”作状语作主/宾/表注意:区别if与whether1.Idon’tknow__________I’llbefreetomorrow.2.Idon’tknow_______ornotI’llbefreetomorrow.3.Thequestionis_______thisbookisworthwriting.whether/ifwhetherwhether5.Itdependson_______wewillhaveenoughmoney.6._______theycandoitmatterslittletous.7._____youarenotfreetomorrow,I’llgowithoutyou.whetherWhetherIf请你归纳a.主语从句并在句首b.表语从句c.同位语从句e.介词后的宾语从句f.直接加动词不定式只能用whether（todo）gwhetherornot直接连用时不用if只能使用whether的情况：请你归纳If表-是否-常用于动词后的宾语从句1.____the2000OlympicGameswillbeheldinBeijingisnotknownyet.A.WheneverB.IfC.WhetherD.That2._____we’llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where高考题选萃☆☆that表肯定意义whether表疑问Thereisnodoubt____hewillwinthefirstplace.thatthat与what的区别Whathesaidmakesmehappy.Thatanewteacherwillcomeistrue.that只起连接作用，无意义，在从句中不充当任何成分,且在宾语从句中有时可省（动词后）。what既起连接作用,又在从句中作主语,宾语,表语(且在名词性从句中只有what可作表语）31._______hesaidsomadeusangry._______hesaidatthemeetingmadeusangry.2.Acomputercanonlydo_________youhaveinstructedittodo.（01全国）3.中国不再是过去的样子了。4.Amoderncityhasbeensetupin______wasawastelandtenyearsago.（04天津）A.whatB.whichC.thatD.whereThatWhatChinaisnolonger______itusedtobe.what☆what1.Thathewillsucceediscertain.2.Whetherhewillgothereisnotknown.3.Whathesaidisnottrue.4.Wherehehidthemoneyistobefoundout.5.Whoevercomesiswelcome.请思考？注意点1).主语从句一律用陈述句语序,即主语在前,谓语在后.例:误:Whenwillhecomeisnotknown.2).连接词that在从句中无实际意义,但不能省略.例:误:Hewillnotcometothemeetingthiseveningistrue.正:Whenhewillcomeisnotknown.正:Thathewillnotcometothemeetingthiseveningistrue.除了动词后的宾从3).whoever,whatever,whichever等词可以引导主语从句,但nomatterwho,nomatterwhat等不能.Whoeverbreakstheschoolrulesmustbepunished.试比较：Whoeverbreakstheschoolsrules,hemustbepunished.Nomatterwhobreakstheschoolrules,hemustbepunished.让步状语从句主语从句1.__________wassaidheremustbekeptsecret.2._______weneedismoretime.3._______hastakenawaymybagisunknown.4.__________breaksthelawwillbepunished.WhateverWhatWhoWhoeverAnyonewho1.他犯了那样一个错误真是遗憾。___________________________isapity.2.他来不来不重要。________________________doesn’tmatter.Itdoesn’tmatterwhether…ThathemadesuchamistakeItisapitythat…考点４：it作形式主语(主从),形式宾语（宾从）it作形式主语WhetherhewillcomeornotItisreported/thought/said/predictedthat…Itisclear/necessary/certainthat…Itisapity/ashame/anhonorthat…Itdoesn’tmatterwhether…Itseems/appearsthat…Ithappensthat…Canyouunderstandthem?1.______hewantsisabook.2.______hewantstogothereisobvious.3.Theresultis______wewonthegame.4.Thisis_____wewanttoknow.5.Is_____hetoldustrue?6.Weshouldpayattentionto______theteacherissaying.7.Ihavenodoubt_____hewillcome.8.Ihavenoidea_____hedidthatafternoon.WhatThatthatwhatwhatwhatthatwhat1)（2008浙江)____wanttostayinahotelhastopaytheirownway.A).anyoneB).theoneC).whoeverD).who2)____hesaidatthemeetingastonishedeverybodypresent.(93)A).whatB).thatC).thefactD).thematter3)（2006浙江）____isourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.A).AsB).ThatC).thisD).It挑战高考1.Iwondered_______youweresoangry.2.Italldependson_______theywillsupportus.3.Ican’timagine_______madehimactlikethat.4.I’mdelighted_______Ihavepassedtheexam.5.Ifinditnecessary_______weshoulddothehomework.用适当的连接词填空whywhetherwhatthatthat请思考？二.宾语从句1.宾语从句的引导词:宾语从句的连接词与引导主语从句的连接词相同.2.注意点1)宾语从句一律用陈述句的语序.2)引导宾语从句的连词that也无实际意义,多数情况下可以省略.3)whether和if都可以引导宾语从句但:(1)当whether后紧跟ornot时,不用if例:Idon’tknow_______Iwillstayornot.(2)介词后面的宾语从句不能用if例:Iworryabout__________Ihurtherfeeling.whetherwhether4)that在宾语