人教版高中英语必修三Unit4Astronomythescienceofthestarsgrammar名师公开课市级获奖课件

主语从句主语从句Grammar3.Tofindyourwaycanbeaproblem.

Whatpartdoestheunderlinedpartserveasineachsentence?

2.Smokingisbadforyou.1.Youareastudent.4.“Howdoyoudo?”isagreeting.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itiscertainthatweshallbelate.subjectAsentenceservingassubjectiscalledSubjectClause.Grammar3.Tofindyourwaycan主语从句

充当主语的句子叫主语从句Howthebookwillselldependsonitsauthor.Thatheisthebeststudentintheclassisobvious.主语从句充当主语的句子叫主语从句Howyougotmeblindisstillamystery.Thatshewonthegamemadeherveryhappy.Whathesaidisnottrue.Whattheyneedisadictionary.

结论主语从句多位于_____________句首主语的位置Trytodrawaconclusion.HowyougotmeblindisstillWhowillgomakesnodifference.Whichisthebestisnotcertain.Whydinosaursdiedoutisstillunknown.Whenwewillgettogetherhasnotbeendecided.Howshecankeephealthyisasecret.Whetherhewillcomeisnotveryimportant.WhowillgoWhichisthebestWhydinosaursdiedoutWhenwewillgettogetherHowshecankeephealthyWhetherhewillcome找出主语从句WhowillgoWhichisthebestWh引导主语从句的关联词有三类：

1)从属连词that如:Thattheyweretruesisterswasclearfromthefacialresemblancebetweenthem.

很明显,她们确是亲姐妹,她们的脸型很相似。

NOTE:that不可省，无意义，起连接作用；从句结构完整。

2)

从属连词whether

Whether

he’llcomehereisn’tclear.

他是否会来这里还不清楚。引导主语从句的关联词有三类：

1)从属连3)连接代词who,whom,whose,what,which,whoever,whatever,whichever,连接副词where,when,how,why。What

shedidisnotyetknown.

她干了什么尚不清楚。

How

thishappenedisnotcleartoanyone.这事怎样发生的,谁也不清楚。

Whoever

comesiswelcome.

不论谁来都欢迎。3)连接代词who,whom,whose,what,4)有时用it作形式主语，将主语从句后置,这样做是为了避免句子头重脚轻。常用句型如下：It+be+名词+that从句It+be+形容词+that从句It+be+动词的过去分词+that从句It+be+不及物动词+that从句4)有时用it作形式主语，将主语从句后置,这样做是为了避免主语从句三要素hebecameagreatscientistisknowntousall.whatyoutoldmeistrue.谓语动词一般用单数从句用陈述语序不能省略关联词How主语从句三要素hebecameagr主语从句的注意问题1.一个句子作主语时，主句的谓语动词应为单数。Whetherhewillcomedependsontheweather.2.what引导的句子作主语时，谓语动词的数由句子的内容决定（即由表语决定)。WhatIwantis

money.Whatweneedare

goodbooksWhathesaidisreasonable.Whatwewilldohasn’tbeendecided.主语从句的注意问题1.一个句子作主语时，主句的谓语动词应为单3.wherehewasbornandwherehelives

now

are

notclear.Whereandwhenhewasborn

remains

asecret.两个或两个以上的主从联合做主语，主句谓语动词应为复数。两个或两个以上的连词引导一个从句，主句谓语动词应为单数。4.whetherhewillcomeisn’tclear.(不能换成if)Itisn'tclearwhether/ifhewillcome.(可以与if进行替换)如果主语从句放在句首，不能用if引导，但是如果用it做形式主语，而把主语从句放在句末时，也可以用if引导.3.wherehewasbornandwhere1.Itworriedherabit___herhairwasturninggray.whether

B.thatC.what

D.when2.WhatIsayandthink___noneofyourbusiness.A.isB.areC.hasDhave1.Itworriedherabit___he5.what与that在引导主语从句时的区别what引导主语从句时在从句中充当句子成分,如主语、宾语、表语,而that则不然。1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.5.what与that在引导主语从句时的区别

3.____makesthisshopdifferentisthatitoffersmorepersonalservices.AWhatBWhoCWhateverDWhoever3.____makesthisshopdiffe6.Whateverandwhoever

Whatever=anythingthatWhoever=anyonewho不管是谁犯了法,他都应该受到惩罚。Whoeverbreaksthelawshouldbepunished.=Anyone

whobreaksthelawshouldbepunished.6.WhateverandwhoeverWhat4.ThesewildflowersaresospecialthatIwoulddo____Icantosavethem.AwhateverBthatCwhichDwhichever4.Thesewildflowersaresos7.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有时有感情色彩。

Itbesuggested/advised/ordered/requestedthatsb(should)dosth…7.用于Itisimportant/natur5._____doshoppingdependsontheweather.

A.WhenwillweB.WhenwewillC.WhatwillweD.Whatwewill5._____doshoppingdepends【常见错误展示】下列各句均有一处错误，请改正并分析错误的原因。1.Lighttravelsfasterthansoundiscommonknowledge.2.Ifshe’scomingornotdoesn’tmattermuch.Thatthat虽无词义但引导主语从句位于句首时不能省略。Whetherif,whether都可表示“是否”,但if不能引导位于主句之前的主语从句，它可以引导位于主句之后带有形式主语it的主语从句。【常见错误展示】下列各句均有一处错误，请改正并分析错误的原因3.Thattheprofessorsaidisofgreatimportance.4.Wherewillthetreesbeplantedhasnotbeendecided.Whatthat引导主语从句时无词义。Whattheprofessorsaid表示“教授所说的”。将will置于trees之后。主语从句要用陈述句语序。3.Thattheprofessorsaidi5.Nomatterwhobreakstherulewillbepunished.6.Whenandwherethemeetingwillbeheldstillremainaquestion.引导让步状语从句时二者可互换，但引导名词性从句时只能用whoever。Whoever主语从句表示单一概念时，谓语要用单数形式。remain5.Nomatterwhobreakstheru7.Whatwereyourproblemsayearagohasnowbecomemine.8.Itwasrequestedthateveryonemadeaspeechatthemeeting.has要改为have。主语从句表示复数概念时，谓语要用复数形式。have在“Itisrequested/ordered/suggested+that从句”中，从句要用虚拟语气，即谓语用“should+动词原形”，should可省略。(should)make7.Whatwereyourproblemsay1.Whereshallwespendtheholidayisn’tdecided.2.Your