主语从句公开课课件

名词性从句2021/6/271Revision3.什么叫名词性从句？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2021/6/272Chosethebestanswer:Wedon’tknow____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what\who\whom\which\whose\whatever\whoever\whichever;若作___语，则选关系副词when\where\why\who.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thatwhether主、宾、表、定状2021/6/273SubjectClauses

主语从句2021/6/274各种各样的主语1）Atreehasfallenacrosstheroad.2）Youareastudent.3）Toliveistolearn,tolearnistobetterlive

.4）Smoking

isbadforyou.5)Itiscertainwhetherwewillsucceed.6）Thatsheisabletocomemakesushappy.名词代词不定式动名词形式主语主语从句2021/6/275一、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2021/6/276二、引导主语从句三大连接词：1、从属连词：that,whetherthat

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ThatWhether2021/6/277

练一练1、_________wegotherebytrainorbyairisnotclear.2、______shelefthimmadehimverysad.WhetherThat2021/6/2782、连接代词：连接代词

中文意思在从句中的成分

who/whom

__whoever

______

what

__________

whatever_______

which

______

whichever________whose____

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2021/6/279e.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。2021/6/2710

练一练1、_________willhostthemeetinghasn’tbeendecided.2、________carrunsfastershouldbetested.3、________comestoourschooliswelcome.4、________sidewillwinisnotclear.

WhoWhoseWhoeverWhich2021/6/27113、连接副词：

连接副词

中文意思在从句中的成分when

where

why

how

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2021/6/2712

练一练1、_____hedidn’tcomeyesterdayisunknown.2、____________wewillsetupthefactoryshouldbediscussed.3、__________thishappenedisnotclear.WhyWhen/WhereHow/Why2021/6/2713三、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2021/6/27141)Itis+n.+that

Itisapity/shamethat...

Itisasurprisethat…

Itisafactthat…Itiscommonknowledgethat…

*_______________(很可惜)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat可惜的是……令人吃惊的是…事实是……是常识2021/6/27152)Itis+adj.+that

It’scertainthat…

Itispossible/likelythat...Itisobvious/clearthat…Itistruethat…

*_______________(很可能)shewillcomebacktomorrow.*_______________(很明显)heisanEnglish.ItispossiblethatItisobviousthat肯定…很可能……很明显…的确…2021/6/27163)It+be+过去分词+从句Itissaidthat...Itisknowntoallthat...Itisreportedthat...Itisbelievedthat...Itissuggestedthat+(should）do...*_________________(据报道)20peoplewerekilledintheaccident.*__________________(建议)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat据说……众所周知……据报道……据相信……;人们相信……建议……2021/6/27174)It+不及物动词+thatIthappenedthat...Itoccurredtomethat…Itappears/seemsthat…Itturnedoutthat…*________________(刚好)Iwasoutyesterday.*____________________(我突然想起)Iforgottosenttheletter.IthappenedthatItoccurredtomethat碰巧……

我突然想起…似乎，好像…原来…2021/6/27185)It+及物动词＋宾语+that从句Itworriedherthat…Itshockedmethat….*____________________(让我吃惊的是)shetreatedintheexam.Itsurprisedmethat让她担心的是…让我震惊的是…2021/6/2719

1、Thatwecan’tgotoseethemovieontheweekendisapity.2、Thathismemorywasbecomingworseworriedhimalot.Itisapitythatwecan’tgotoseethemovieontheweekend.Itworriedhimalotthathismemorywasbecomingworse.用it作形式主语来改写下面的句子2021/6/2720

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)hold2021/6/2721四、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。Whyhedidit2021/6/27222、从句做主语时，主句谓语动词的单复数①单个主语从句做主语时，谓语动词用单数e.g.Whenweshallhaveoursportsmeeting

notbeendecidedyet.②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

2021/6/2723③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.have2021/6/2724

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.isareWhoyouwillgowith______Lucy.Whoyouwillgowith______thetwins.isare2021/6/27253、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2021/6/2726

练习___leavestheroomlastoughttoturnoffthelight.A.AnyoneB.Thep