主语从句ppt课件

NounClauses Thesubjectclause ByDebby Grammar Whatpartdoestheunderlinedpartserveasineachsentence Atreehasfallenacrosstheroad Youareastudent Tofindyourwaycanbeaproblem Smokingisbadforyou Howdoyoudo isagreeting Whatshesaidisnotyetknown Thatweshallbelateiscertain Itiscertainthatweshallbelate 主语从句 NounClausesastheSubject 定义 用作主语的从句叫主语从句 它是名词性从句之一 引导主语从句的连接词有 连词that whether 连接代词who what和which 连接副词when where how和why 主语从句的连接词 连词that 无词义 不作成分 不能省略 whether 是否 if不能位于句首 Thathewillcomeandhelpusiscertain Whetherwewillsucceedisstillaquestion Itisnotknownifhewillcome 注意 已确定的事由that引导 没决定的事由whether引导 主语从句常用it作形式主语放句首 因而我们常见到这种句式 It be n adj ed从句 that whether etc 例 It sapitythatyoushouldhavetoleave Thatyoushouldhavetoleaveisapity ItisgreatthatIhaveateacherlikeyou ThatIhaveateacherlikeyouisgreat 2 连接代词who what which whatever whichever whoever充当成分 有具体意义 Whatseemseasytosomepeopleseemsdifficulttoothers Whichsidewillwinisnotclear 3 连接副词when where how why等 Whyhediditremainsamystery Whentheywillstartisnotknownyet Howhebecameagreatscientistisknowntousall 2 位置 主语从句可以前置 也可以后置 用it做形式主语 而把主语从句 在句末 常用下面几种句型 1 It be 表语 主语从句表语 名词 形容词 过去分词 Itisafact ashame apity goodnews that Itisstilluncertainwhetherheiscomingornot ItisanhonourthatIwasinvitedtoattendthemeeting Itiscertainthatshewilldowellinherexam ItistruethatItoldhereverything ItissaidthatMr GreenhasarrivedinBeijing ItisreportedthatChinahassentanothermanmadeearthsatelliteintoorbit 2 It 不及物动词 主语从句Itseemed happened doesn tmatter hasturnedout that Ithappensthattheywereabsent ItseemsthatAliceisnotcomingtothepartyatall Itdoesn tmatterwhethershewillcomeornot Itmakesnodifferencewhereweshallhavethemeeting 3 It 及物动词 被动语态 主语从句 IthasbeendecidedthattheexhibitionwillnotopenonSundays 注意 1 主语从句在句首时 必须由连接词引导 不能省略这些连接词 但是如果用it做形式主语 而把主语从句放在句末时 从属连词that可以省略 4 用于Itisimportant natural necessary impossiblethat 句型中 主语从句应使用虚拟语气 谓语动词用 should 动词原形 的形式 should有时可以省略 5 在It be suggested advised ordered requested insisted required中 that从句的谓语也应该用 should 动词原形 的形式 should有时可以省略 3 主语从句需注意的问题 1 主语从句中用陈述语序WhatsheisafraidofistheirtakinghertoParis Whatissheafraidof Wrong 2 主语从句后谓语动词用三人称单数Thattheyhaven tphonedisstrange 3 that引导的主语从句中 that不可被省略Thatpricewillgoupiscertain 4 what与that在引导主语从句时的区别what引导主语从句时在句时在从句中充当句子成分 如主语 宾语 表语 而that则不然 例如 1 Whatyousaidyesterdayisright 2 Thatsheisstillaliveisaconsolation What在此引导主语从句 又做said的宾语 That只起连接作用 不做成分 practice 1 Whereshallwespendtheholidayisn tdecided 2 Youhavemadeamistakeisafact 3 Thatiscertainthatwecanwin 4 Nomatterwholeavestheroomlastoughttoturnoffthelights 5 Itisimportantthatastudentlearnsaforeignlanguage weshall Thatyouhave Itis Whoever shouldlearn 改错练习 Describeyourmotherwithyourpartner Suggestedstructures Whatmymotherlikesis Whatmymotherdoesn tlikeis Whethermymotherwouldfeelhappyis Whymymotherwouldbehappyis Whymymotherfeelsupsadis 1 youdon tlikehimisnoneofmybusiness 2 hesaidatthemeetingastonishedeverybodypresent3 the2000OlympicGameswillbeheldinBeijingisnotknownyet 4 we llgocampingtomorrowdependsontheweather 5 leavestheroomlastoughttoturnoffthelights That What Whether Whether Whoever 6 isafactthatEnglishisbeingacceptedasaninternationallanguage 7 Itworriedherabit herhairwasturninggrey 8 TheForeignMinistersaid isourhopethatthetwosideswillworktowardspeace 9 AfterYangLiweisucceededincirclingtheearth ourastronautsdesiretodoiswalkinspace It that It what 特殊句式 1 Ihate whenpeopletalkwiththeirmouthsfull MET98 A itB thatC theseD them2 Ifeel strangethatheshouldbesocareless A B itC thatD how3 Itworriedherabit herhairwasturninggrey MET92 A whileB thatC ifD for 1 madetheschoolproudwas morethan90 ofthestudentshadbeenadmittedtokeyuniversities A What becauseB What thatC That whatD That because 2 wewillgocampingtomorrowdependsontheweather A IfB WhetherC ThatD Where3 thattheycanpassthewrittenexamthistime A ThatishopedB ItishopedC IthopesD Thathopes 5 leavestheroomlastoughttoturnoffthelights A AnyoneB ThepersonC WhoeverD Who 6 isafactthatEnglishisbeingacceptedasaninternationallanguage A ThereB ThisC ThatD It C D 7 inthenewspaperthatthepriceoffoodwillgoup A ItsaysB ItissaidC IthassaidD Heissaid 8 Itworriedherabit herhairwasturninggrey A whileB thatC ifD for B B 9 Thereisnodoubt A thatMr HansenisingoodhealthB whetherisMr HansenhealthyC ifMr Hansen shealthwasreturningD whetherMr Hanseninhealth A 10 TheForeignMinistersaid ourhopethatthetwosideswillworktowardspeace A ThisisB ThereisC ThatisD Itis D 11 Itisnecessarythatacollegestudent atleastaforeignlanguage A mastersB shouldmasterC masteredD willmaster B 6 It作形式主语和it引导强调句的比较 It作形式主语代替主语从句 主要是为了平衡句子结构 主语从句的连接词没有变化 而it引导的强调句则是对句子某一部分进行强调 无论强调的是什么成分 都可用连词that 被强调部分指人是也可用who whom 例如 Itisapitythatyoudidn tgotoseethefilm Itdoesn tinterestmewhetheryousucceedornot Itisinthemorningthatthemurdertookplace ItisJohnthatbrokethewindow 1 Ireadaboutitinsomebookorother doesitmatter itwas 01北京春季 A whereB whatC howD which 2 AfterYangLiweisucceededincirclingtheearth ourastronautsdesiretodoiswalkinspace 04上海 A whereB whatC thatD how 3 Fashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect 00上海 WhatB ThatC ThisD Which D B B