英语 Unit 4 Astronomy the science of the stars（6） 新人教版必修3 .ppt

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1、Noun clauses as the subjectUnit4Grammar QUIZ 课前小测课前小测1._watchwaslostisunknown.2._youdidisright.3._wewillgoforanoutingtomorrowremainsunknown.4._weneedistime.5._willbeourmonitorhasntbeendecidedyet.whetherwhatwhowhosewhateverUsethewordsbelowtofillintheblanks.WhetherWhatWhateverWhoseWho上面的空大家都填对了吗上面的空大家

2、都填对了吗?上面每个句子的主语，大家上面每个句子的主语，大家能找到吗？同时思考这些主能找到吗？同时思考这些主语有什么特别之处语有什么特别之处?1.Whosewatchwaslostisunknown.2.Whateveryoudidisright.3.Whetherwewillgoforanoutingtomorrowremainsunknown.4.Whatweneedistime.5.Whowillbeourmonitorhasntbeendecidedyet.Findoutthesubject主语在哪里？主语在哪里？1.The sky in the countryside seems q

3、uite blue.2.Flying in my own house is my dream.3.To apologize to his parents was a terrible thing for him.4.What I have got is all here.1.The sky名词做主语名词做主语inthecountryside状状seemsquiteblue.2.Flying in my own house分词做主语分词做主语ismydream.3.To apologize to his parents不定式作主语不定式作主语wasaterriblethingforhim.4.W

4、hat I have got句子作主语句子作主语isallhere.总结：句子中的主语除了名词、代词，还包括不定式、分词甚至句子都可以充当。“是句子必有主谓 有主谓必成句子”主语从句主语从句(SubjectClause)如果一个句子在复合句中充当一个主语如果一个句子在复合句中充当一个主语,那么这个句子就是那么这个句子就是主语从句主语从句。Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.Whatweneedaregooddoctors.Whomwemuststudyforisaquestionofgreatimp

5、ortance.连接词连接词连词连词不充当句子成分不充当句子成分 只起连接作用只起连接作用 不可省略不可省略ThatThattheearthmovesaroundthesuniswellknown.Whether(是否是否)Whetherhewillcomeornotisnotknownyet.whatWhatyouneedismorepractice.whichWhichoneisthebestisnotclear.连接词连接词代词代词充当句子基本成分充当句子基本成分 且有实际意义且有实际意义 不可省略不可省略WhoWhowillgomakesnodifference.whoeverwhat

6、everwhicheverwhen,whereWherehehasgoneisaquestion.Whentheshowwillbeonisntknown.why,howWhythereisgravityishardtounderstand.HowhecanearnalivinginBritainremainsabigproblem.连接词连接词副词副词充当句子状语成分充当句子状语成分 有实际意义有实际意义 不可省略不可省略8.whoever、whatever、whichever可引可引导主语从句。导主语从句。Whoevercomeswillbewelcome.Whateverhedidwas

7、right.Whicheverofyoucomesinwillreceiveaprize.1.引导主语从句连词有引导主语从句连词有that,whether,who,what,whatever等。等。2.连词位于句首连词位于句首不能不能省略。省略。3.主语从句大多数情况下主语从句大多数情况下视为第三视为第三人称单数人称单数,但在关系代词但在关系代词what引导引导的主语从句后谓语动词的数要的主语从句后谓语动词的数要根根据句意而定。据句意而定。小结小结为了防止句子头重脚轻，通常把形式为了防止句子头重脚轻，通常把形式主语主语it放在主语位置，真正主语后置。放在主语位置，真正主语后置。1.Itisce

8、rtainthathewillwinthematch.2.Itistruethathehasmadeaveryimportantdiscoveryinchemistry.3.Itisverylikelythattheywillholdameeting.1.以以that引出的主语从句引出的主语从句,常以形式常以形式主语主语it引导引导,结构为结构为:Itis+形容词形容词/名词名词/某些动词某些动词ed+that从句。从句。2.在有些在有些that从句中要用虚拟语气从句中要用虚拟语气(should+do/should+havedone)。延伸与了解延伸与了解whether与与if均为均为“是否是

9、否”但下列情况下只用但下列情况下只用whether：1.引导主语从句并在句首引导主语从句并在句首Whetherhewillcomeisnotclear.2.引导表语从句引导表语从句Thequestioniswhetherhellcome.3.whether从句作介词宾语从句作介词宾语Imnotsureaboutwhetherwellwin.4.引导让步状语从句时引导让步状语从句时 Whetheryoulikeitornot,youllhavetodoit.1.主语从句位于句首时必须由连接词主语从句位于句首时必须由连接词引导。引导。2.主语从句后置时引导词主语从句后置时引导词that可省略。可省

10、略。3.主语从句位于句首时主语从句位于句首时,不能用不能用if引导。引导。4.主语从句后置时主语从句后置时,可以用可以用if引导。引导。注意事项注意事项What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.It was not immediately obvious that water was fundamental to the development of life.How they suddenly

11、disappeared still remains a mystery.Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.Find out the subject in the following sentencesWhat it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust set

12、tled into a solid globe.It was not immediately obvious that water was fundamental to the development of life.How they suddenly disappeared still remains a mystery.Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.Find out the subj

13、ect in the following sentences 1._makesthisshopdifferentisthatitoffersmorepersonalservices.A.WhatB.WhoC.WhateverD.Whoever2.ThesewildflowersaresospecialIwoulddo_Icantosavethem.A.whateverB.thatC.whichD.whichever3._intheregulationsthatyoushouldnottellpeoplethepassportofyoure-mailaccount.A.Whatitrequire

14、dB.WhatrequiresC.ItisrequiredD.Itrequires4.Itisprettywellunderstood_controlstheflowofcarbondioxideinandoutoftheatmospheretoday.A.thatB.whenC.whatD.how5._madetheschoolproudwas_morethan90%ofthestudentshadbeenadmittedtokeyuniversities.A.What;becauseB.What;thatC.That;whatD.That;because6.Itnowappears_the

15、yareinneedofhelp.A.thatB.whichC.whatD.how7._knowsthetruthwilltellyouaboutit.A.WhothatB.WhoeverC.WhomthatD.Thatwho8.Itisgoodnews_theywillarriveinafewdays.A.whichB.whatC.thatD.how1.他出生在何地还不知道。他出生在何地还不知道。2.谁会赢得比赛还不知道。谁会赢得比赛还不知道。3.谁来都欢迎。谁来都欢迎。4.那个人为什么被谋杀尚不知道。那个人为什么被谋杀尚不知道。Wherehewasbornhasnotbeenfound.Whythepersonwasmurderedisstillunknown.Whowillwinthematchisstillunknown.Whoevercomesiswelcome.Homework Review what we have learned in class by referring to the explanation on Page 92.Finish the exercise 2 on Page 29.