人教高中英语必修3Unit4-Grammar-The-subject-clause主语从句优秀课件

(主语从句)

Unit4Astronomy:thescienceofthestarsGrammar:ThesubjectclauseLearningobjectives

（学习目标）1.Tolearnthegrammarofthisunit--theSubjectClause.2.TograsptheSubjectClauseandknowhowtouseit.NounClauses(名词性从句)SubjectClause(主语从句)AppositiveClause（同位语从句）ObjectClause（宾语从句）PredicativeClause（表语从句）RevisionReviewthepassage“howlifebeganontheearth”andtranslatethefollowingsentences.谁也不知道地球会有别于其他行星.这就是地球之独有特性的初次显现.许多人认为这对生命的起源特别重要.没有人懂得这些植物就是许多变化的开始.Nobodyknew

thatitwasgoingtobedifferentfromotherplanets.Thisishowtheearthbegantoshowitspecialqualities.Manypeoplethinkthatthiswasimportantforthebeginningoflife.Nobodyunderstoodthattheseplantswerethestartsofmanychanges.Leading-in

Answer:Whatdoestheunderlinedpartserveasinthesesentences?

Atreehasfallenacrosstheroad.

Youareastudent.

Tofindyourwaycanbeaproblem.

Smokingisbadforyou.名词代词动词不定式动名词SubjectHisjobisimportant.Whathedoesisimportant.Compare主语Whatshesaid

isnothingserious.

Thatweshallbelate

iscertain.Whetherhewillcometomorrow

isnotclear.Newlesson在复合句中，充当主语的句子，叫主语从句。一.定义：WhatistheSubjectClause?

（什么叫主语从句？）二.引导主语从句的连接词的用法：

Thatpricewillgoupiscertain.

Thattheyneedhelpverymuchisquiteclear.1.that的用法：that

引导主语从句只起引导作用，本身无实际意义，在从句中不充当任何成分，但不能省略。.Itwasnotclearwhetherthesolidshapewouldlastornot.Realsubject（SubjectClause）FormedsubjectWhetherthesolidshapewouldlastornotwasnotclear.Conclusion:ifIf×2.whether和if的用法：1）主语从句在句首只能用whether,

有it作形式主语时whether/if都可以。2）whether/if

在从句中不充当句子成分，但有意义“是否”，不能省略。1）连接代词：what(whatever)

，who(whoever)，

which(whichever)，whom，whose.可以在从句中作主语，宾语表语。____________hedid

isright.（什么、无论什么）

____________heisisnotimportant.

（谁）

________teamwillwin

isnotclear.

（哪一个）

_______ideawillbe

accepted

hasnotbeendecidedyet.

（谁的）

______hewillbebackdependsontheweather.（什么时候）

_______welivedoesn’tmatter.（哪里）

______thepyramidswerebuiltwasstillamystery.（怎样）

______dinosaursdiedoutisstillamystery.（为什么）

2）连接副词：when，where，how，why.

在从句中做状语。3.连接代词和连接副词的用法：Conclusion:连接代词和连接副词在从句中都有各自的意义，也充当句子成分，不能省略。What/WhateverWho/whomWhichWhoseWhenWhereHowWhyCompletethesentencesusingthat

，what,whether,orwhere.1._____isneededforsuccessisyourhardwork.4.______wewilllivetomorrowhasn’t

beendecidedyet.3.________itwillrainornotisnotclear.2.______theearthisasolidballisknowntousall.WhatWhetherThat主语从句作主语时，主句谓语动词一般用单数形式。Conclusion:ExercisesWhere1.Whereshallwespendtheholidayisn’tdecided.2.Whyishelatefortheclassisn’tclear.weshallheisdinosaursdiedout

改错练习3.Howdiddinosaursdieoutisstillamystery.ExercisesConclusion:从句必须用陈述语序。由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it

作形式主语,而把从句放在后面。例如:

1.Thathewillrefusethispieceofadviceisimpossible.=Itisapitythatshehasmadesuchamistake.=Itisimpossiblethathewillrefusethispieceofadvice.2.Thatshehasmadesuchamistakeisapity.注意:Canyourewritethefollowingsentences?（你能改写下面的句子吗？）1.Thattheearthturnsaroundthesunisknowntoall.2.Thatpricewillgoupiscertain.

3.Thattheyarebadlyinneedofhelpisquiteclear.Itisknowntoallthattheearthturnsaroundthesun.Itisquiteclearthattheyarebadlyinneedofhelp.Itiscertainthatpricewillgoup.

Pickuponenumberandfinishthetaskinit,thenyoucangetsomescores.12345678910GameTime!Correctornot?*Whenthemeetingwillbeheldhaven’tbeenknownyet.hasn’t×Payattention:主语从句作主语时，主句谓语用单数形式

10*

Ifwewillhaveameetinghasn’tbeendecidedyet.×Correctornot?WhetherPayattention:放在主语从句句首，表示“是否”时，只能用whether,不能用if10

×Correctornot?Payattention:此主语从句缺少成分-宾语，所以用作成分的what来引导，而不用that。What*Thatshewantstoknowiswhenthepartywillbeheld.10

×Correctornot?Payattention:由that引导的主语从句，that不能省略。Thathe*Hewillgiveuphisjobsurprisesallofus.101.Itisa

question____________thefilmisworthseeing.2.________weshallattendthemeetinghasn'tbeendecidedyet.用whether\if填空Whether/ifWhether10Translatethesentence*Itisknowntous___________________________________________(马克.吐温怎样成为一位伟大的作家).

howMarkTwainbecameagreatwriter20Translatethesentence*_______________________________（她是否出席会议）isnotcertain.Whethershewillattendthemeeting20

thecat(do)what

Whatthecatdidmadethebabycry.make…cryMakeasentence30talkabouttheuseofcellphones

Whattheyaretalkingabout

istheuseofcellphones.Makeasentence30what

ItisreportedthatYaoMinggotthehighestpointsinthematch.Makeasentence30it，report,getthehighestpointsinthematch

TheSubjectClause2.引导主语从句在句首只能用whether,

有it作形式主语时whether/if都可以。1.that在主语从句中不能省略。3.有时为了使句子结构平衡,避免“头重脚轻”,常用

it作形式主语,而把从句放在后面。4.主语从句作主语时，谓语动词一般用单数形式。5.从句必须用陈述语序。Summary:HomeworkComparethedifferencesandthesimilaritiesamongSubjectclause,ObjectclauseandPredictiveclause.

That'sall.Thanksforlistening!Goodbye!

2.

_______theycansolvethequestionisstillunknown.A.IfB.WhichC.WhetherD.What3._____hesaidatthemeetingastonishedeverybody.A.WhyB.WhatC.ThatD.Who4.____isafactthatEnglishisacceptedasaninternat