主语从句公开课课件.ppt

,名词性从句主语从句,Revision,3.什么叫名词性从句？,在复合句中起名词作用的句子叫名词性从句.,2.名词在句子当中一般可以作什么成分?,名词在句中主要作主语、宾语、表语和同位语。,4.因此根据它在句中不同的语法功能，名词从句又可分别称为_、_、_和_。,主语从句,宾语从句,表语从句,同位语从句,Chosethebestanswer:Wedontknow_theydidit.A.howB.whoC.whatD.which2.Thisis_Iwanttotellyou.A.whereB.whatC.howD.which,解题步骤：判断从句类型。先找出主句谓语，位于实义动词后的是_，位于系动词后的是_，位于谓语动词前的是_。分析从句的成分。若不缺少任何成分，则选_或_;若缺少_语，则选用关系代词whatwhowhomwhichwhosewhateverwhoeverwhichever;若作_语，则选关系副词whenwherewhywho.关系词的确定还需根据意思来定。,宾语从句,表语从句,主语从句,that,whether,主、宾、表、定,状,SubjectClauses主语从句,各种各样的主语,1）Atreehasfallenacrosstheroad.2）Youareastudent.3）Toliveistolearn,tolearnistobetterlive.4）Smokingisbadforyou.5)Itiscertainwhetherwewillsucceed.6）Thatsheisabletocomemakesushappy.,名词,代词,不定式,动名词,形式主语,主语从句,一、定义,在主从复合句中，充当主语的从句叫主语从句。,e.g.Whathedidintheearthquakemovedeverybody.,主语从句,谓语,宾语,ThatChinawillbecomemorepowerfuliscertain.,主语从句,谓语,表语,二、引导主语从句三大连接词：,1、从属连词：that,whether,that无词义,在从句中不作成分，但不能省略,whether意为“是否”，在从句中不作成分，可放在句首或句末，但不可省略,e.g.shegotthefirstprizemadeherparentsveryhappy.,shewillcomeornotisstillaquestion.,无义,是否,That,Whether,练一练,1、_wegotherebytrainorbyairisnotclear.2、_shelefthimmadehimverysad.,Whether,That,2、连接代词：,不可省略,谁,不论谁,什么什么事,无论什么,哪一个,无论哪一个,谁的,主语宾语表语,定语,e.g.Whateveryoudoshoulddonoharmtoothers.无论你做什么都不应该伤害别人。Whowilltakehisplaceisnotimportant.谁将代替他并不重要。,练一练,1、_willhostthemeetinghasntbeendecided.2、_carrunsfastershouldbetested.3、_comestoourschooliswelcome.4、_sidewillwinisnotclear.,Who,Whose,Whoever,Which,3、连接副词：,不可省略,什么时候,在哪里,为什么,怎么样，如何,时间状语,地点状语,原因状语,方式状语,练一练,1、_hedidntcomeyesterdayisunknown.2、_wewillsetupthefactoryshouldbediscussed.3、_thishappenedisnotclear.,Why,When/Where,How/Why,三、用it作形式主语的主语从句,常用句型如下：It+be+名词+that从句It+be+形容词+that从句It+be+过去分词+that从句It+不及物动词+that从句It+及物动词+宾语+that从句,注解：一般来说主语从句都是放在,但有时为了使句子,避免”头重脚轻”,常用作，从而把主语从句放在,句首,保持平衡,it,形式主语,后面,1)Itis+n.+thatItisapity/shamethat.ItisasurprisethatItisafactthatItiscommonknowledgethat*_(很可惜)welostthematch.*_(这是事实)hecheatedintheexam.,Itisapitythat,Itisafactthat,可惜的是,令人吃惊的是,事实是,是常识,2)Itis+adj.+thatItscertainthatItispossible/likelythat.Itisobvious/clearthatItistruethat*_(很可能)shewillcomebacktomorrow.*_(很明显)heisanEnglish.,Itispossiblethat,Itisobviousthat,肯定,很可能,很明显,的确,2019/12/13,17,可编辑,3)It+be+过去分词+从句Itissaidthat.Itisknowntoallthat.Itisreportedthat.Itisbelievedthat.Itissuggestedthat+(should）do.*_(据报道)20peoplewerekilledintheaccident.*_(建议)weshouldeatmorevegetableanddomoreexercise.,Itisreportedthat,Itissuggestedthat,据说,众所周知,据报道,据相信;人们相信,建议,4)It+不及物动词+thatIthappenedthat.ItoccurredtomethatItappears/seemsthatItturnedoutthat*_(刚好)Iwasoutyesterday.*_(我突然想起)Iforgottosenttheletter.,Ithappenedthat,Itoccurredtomethat,碰巧,我突然想起,似乎，好像,原来,5)It+及物动词宾语+that从句,ItworriedherthatItshockedmethat.,*_(让我吃惊的是)shetreatedintheexam.,Itsurprisedmethat,让她担心的是,让我震惊的是,1、Thatwecantgotoseethemovieontheweekendisapity.2、Thathismemorywasbecomingworseworriedhimalot.,Itisapitythatwecantgotoseethemovieontheweekend.,Itworriedhimalotthathismemorywasbecomingworse.,用it作形式主语来改写下面的句子,改错,1、Thatiswidelybelievedthatsmokingcancausecancer.2、Itissuggestedthatwewillholdameetingnextweek.,It（作形式主语）,解析：过去分词如果是suggested,ordered,requested等表示建议，命令，请求等的词时，主语从句应用虚拟语气，即“(should)+动词原形”,(should)hold,四、主语从句中应注意的问题,1、从句的语序要用陈述句的语序。,e.g.remainsamystery.他为什么做那件事依然是个谜。,Whyhedidit,2、从句做主语时，主句谓语动词的单复数,单个主语从句做主语时，谓语动词用单数,e.g.Whenweshallhaveoursportsmeetingnotbeendecidedyet.,由两个或多个连接词引导一个主语从句时，谓语动词也用单数,e.g.Whenandwhereweshallhaveoursportsmeetingnotbeendecidedyet.,has,has,如果用and连接两个或两个以上的主语从句做主语时，谓语动词用复数,e.g.Whentheywillstartandwheretheywillgonotbeendecidedyet.,have,注意,what和who引导主语从句时，主句谓语的数应与主句中作表语的名词保持一致。,WhatIneed_money.WhatIneed_books.,is,are,Whoyouwillgowith_Lucy.Whoyouwillgowith_thetwins.,is,are,3、whether引导的主语从句,如果用了形式主语it,引导词whether可以换成if,如果whether从句在句首或后面有ornot时,不能换成if.,Whethertheywillsellthehouseisnotdecidedyet.Itisnotdecidedyetwhethertheywillsellthehouse.,不可用if替换,可用if替换,练习,_leavestheroomlastoughttoturnoffthelight.A.AnyoneB.ThepersonC.WhoeverD.Which,2._hehasbecomearichmanisknowntoallinourtown.A.BecauseB.ThatC./D.What,3._Ineedismoretime.A.ThatB.WhatC./D.Which,4._wellgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where,5._Jacklookedsoexcitedisnotclear