20152016學(xué)年高中英語人教版課件必修3Unit4Period3Grammar

NounclausesasthesubjectUnit4Grammar主語從句231、幫助學(xué)生了解、熟悉并初步掌握名詞性從句—主語從句的用法。2、使學(xué)生能夠找出主語從句，并動手解決主語從句的相關(guān)練習(xí)。3、學(xué)會用主語從句簡單會話表達。

本課首先開始于簡單句子到復(fù)合句子中對主語的認識，從學(xué)生熟悉的名詞、人稱代詞充當主語，一步一步由淺入深過渡到句子作主語。旨在給學(xué)生有個初步認識，為下面的環(huán)節(jié)打基礎(chǔ)。

通過小組競賽，在已學(xué)的reading中快速找出主語從句，旨在加深學(xué)生對主語從句的認識程度，競賽有利于培養(yǎng)學(xué)生的合作能力，使語法課生動活躍起來。通過不同的語法練習(xí)的呈現(xiàn)、講練結(jié)合—看圖根據(jù)對話寫出主語從句及各種語法任務(wù)設(shè)置，使學(xué)生掌握主語從句的相關(guān)知識。尤其是tryyourluck部分更能調(diào)動學(xué)生學(xué)語法知識的氣氛，提高學(xué)生解決語法知識的能力，熟悉主語從句。preparationWhatpartdoestheunderlinedpartserveasineachsentence?

Atree

hasfallenacrosstheroad.

Youareastudent.

Tofindyourway

canbeaproblem.

Smoking

isbadforyou.

Whatshesaidisnotyetknown.

Thatweshallbelate

iscertain.

It

iscertainthatweshallbelate.主語名詞充當主語人稱代詞充當主語不定式充當主語動名詞充當主語句子充當主語句子充當主語it充當形式主語Let’sseewhichgroupcanfindthesentenceslikethefollowingexamplesinReadingon26

morequickly.Attentionplease:1.Fourorsixpeopleinagroup.2.Trytofindasmanysentenceslikethefollowingexamplesaspossible!3.Ifyourgroupfinishthetask,pleaseputupyourhandandonemembershouldtellusallthesentencesyourgrouphavefound.GroupcompetitionExamples:(sentencesservedassubject)

Whatshesaidis

notyetknown.

Thatweshallbelate

is

certain.

It

is

certainthatweshallbelate.1.Whatitwastobecome

wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.地球會變成什么樣子，直到45億至38億年前這個云團變成固體的球狀物，才確定下來。2.Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.

地球變得激烈動蕩，不知道這個固體形狀是否會繼續(xù)存在下去。3.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.

更重要的是，隨著地球的冷卻，地球的表面就開始出現(xiàn)了水。4.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水對于生命的發(fā)展會起關(guān)鍵作用，這一點在當時并不明顯。SentencesinReadingP25-26Read&translate所有劃線的句子都充當___________.那么什么是主語從句呢？主語

主語從句(SubjectClause)如果一個句子在復(fù)合句中充當一個主語,那么這個句子就是主語從句。Thathefinishedwritingthecompositioninsuchashorttime

surprisedusall.

Whatweneedaregooddoctors.Whomwemuststudyforisaquestionofgreatimportance.Whatissubjectclause?主語從句三要素

hebecameagreatscientistis

knowntousall.Is

whatyoutoldmereallytrue?謂語動詞用單數(shù)從句用陳述語序不能省略關(guān)聯(lián)詞Notice:Whatweneedmost

are

books.How_________________hasnotbeenfound.StudentA:wherewasThomasEdisonborn?StudentsB:Idon’tknow.Ican’tfindtheanswerinthepassage.Wherehewasborn_____________________isstillunknown.StudentA:whowillwintheEnglishspeechcontest?StudentsB:Idon’tknow.Itishardtosay.Whowillwinthematch________________willbewelcome.StudentA:Tom,tomorrowisyourbirthday.Whodoyouinvite?StudentsB:Iwillwelcomeeveryonewhocomestomyparty.Whoevercomes在主語從句中,謂語一般用單數(shù)。無論他說什么都不重要。Whateverhesaysis

ofnoimportance.無論誰說這話都不對。

Whoeversaysthatis

wrong．但謂語動詞用單數(shù)還是復(fù)數(shù),不可一概而論,而要視句子的意義而定。

WhatIneedismoney.WhatIneedare

books.what與that在引導(dǎo)主語從句時的區(qū)別what引導(dǎo)主語從句時在句時在從句中充當句子成分,如主語、賓語、表語,而that則不然。1)What

yousaidyesterdayisright.2)That

sheisstillaliveisaconsolation.為了防止句子頭重腳輕，通常把形式主語it

放在主語位置，真正主語后置。Itiscertainthathewillwinthematch.Thathewillwinthematch

iscertain.2.Itistruethathehasmadeaveryimportantdiscoveryinchemistry.Thathehasmadeaveryimportantdiscoveryinchemistry

istrue.3.Itisverylikelythattheywillholdameeting.

Thattheywillholdameeting

isverylikely

.

1.以that引出的主語從句,常以形式主語it引導(dǎo),結(jié)構(gòu)為:Itis+形容詞/名詞/某些動詞ed+that從句。

(1)Itis+形容詞/名詞+that從句，如：

Itisapity/shamethat…遺憾的是…Itispossiblethat…很可能…Itisunlikethat…不可能…(2)It+不及物動詞+that從句，如：

Itseems/appearsthat….似乎…Ithappenedthat…碰巧…It+be+過去分詞+that從句Itissaidthat…據(jù)說…Itisknowntoallthat…眾所周知…Itisreportedthat…據(jù)報道…Itisbelievedthat…人們相信…Itissuggestedthat…有人建議…Itmustbepointedoutthat…必須指出…Tryyourluck!Choosethepicturesandfinishtheexercisewithyourgroup!1.______watchwaslostisunknown.2.________youdidisright.3._________wewillgoforanoutingtomorrowremainsunknown.4.______weneedistime.5.______willbeourmonitorhasn'tbeendecidedyet.whetherwhatwhowhosewhateverUsethewordsbelowtofillintheblanks.WhetherWhatWhateverWhoseWhoback【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。1.Lighttravelsfasterthansoundiscommonknowledge.2.Ifshe’scomingornotdoesn’tmattermuch.Thatthat雖無詞義但引導(dǎo)主語從句位于句首時不能省略。Whetherif,whether都可表示“是否”,但if不能引導(dǎo)位于主句之前的主語從句，它可以引導(dǎo)位于主句之后帶有形式主語it的主語從句。backYouareluckytoday!Youdon’tneedtodoexercises!back3.Thattheprofessorsaidisofgreatimportance.4.Wherewillthetreesbeplantedhasnotbeendecided.Whatthat引導(dǎo)主語從句時無詞義。Whattheprofessorsaid表示“教授所說的”。將will置于trees之后。主語從句要用陳述句語序。back【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。5.Nomatterwhobreakstherulewillbepunished.6.Whenthemeetingwillbeheldstillremainaquestion.引導(dǎo)讓步狀語從句時二者可互換，但引導(dǎo)名詞性從句時只能用whoever。Whoever主語從句表示單一概念時，謂語要用單數(shù)形式。remainsback【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。7.Itwasrequestedthateveryonemadeaspeechatthemeeting.在“Itisrequested/ordered/suggested+that從句”中，從句要用虛擬語氣，即謂語用“should+動詞原形”，should可省略。(should)makeback【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。Finishex.2inDiscoveringusefulstructures.GroupworkDiscoveringusefulstructures

1.Hisdiscoveryhasnotyetbeenproved.What__________________________________.2.Dotheotherastronomersaccepthisideas?Itremainsaquestion.Whether______________________________________________.3.Thefirstappearanceoflifeonearthisstillamysterytoscientists.How______________________________________________.hasnotyetbeenproved

ishisdiscovery

otherastronomersacceptshisideasremainsaquestionlifefirstappearedonearthisstillamysterytoscientistsEx.24.Whyistheearthbecomingwarmer?Itisanimportanttopicforresearch.Why__________________________________________________________________________.