《Unit 1 Learning About Language》第2課時教學(xué)課件【高中英語選擇性必修第二冊人教版】

Unit1ScienceandScientistsLearningAboutLanguage

Period2人教版高中英語選擇性必修第二冊Understandingscienceandpushingtheboundariesofscienceiswhatmakesmeimmenselysatisfied.—BillGatesThedoctorhasbeentaughttobeinterestednotinhealthbutindisease.Whatthepublicistaughtisthathealthisthecurefordisease.—AshleyMontaguWarming-upReadthefollowingsentencesandfindouttheclausesandthelinkingwords.LinkingverbLinkingverbSomekeypoints定義：在主從復(fù)合句中充當(dāng)表語的句子。作用：說明主語是什么?？梢杂擅~、形容詞或相當(dāng)于名詞或形容詞的詞或短語充當(dāng)表語的成分。然而要注意，表語從句屬于名詞性從句，只是表語的其中一種情況——由名詞充當(dāng)表語。判斷：表語在系動詞之后出現(xiàn)。常見系動詞：

狀態(tài)類：be動詞,seem,appear,keep,remain,stay…

感官類：look,smell,taste,sound,feel…

變化類：become,get,turn,grow,fall,come,go…Grammarfocus表語從句的引導(dǎo)詞：

連詞：在從句中不作成分。that,whether,asif,asthough…

連接代詞：在從句中作主語、賓語、表語、定語what/whatever,which/whichever,who/whoever,whom,whose…

連接副詞：在從句中作狀語when,where,why,how,because…Grammarfocus選擇表語從句的引導(dǎo)詞，主要從表語從句的句子結(jié)構(gòu)和所要表達(dá)的句意兩個角度來判斷。引導(dǎo)詞在表語從句中充當(dāng)?shù)某煞忠龑?dǎo)詞備注主語who,what,which,whatever,whichever根據(jù)句意選擇賓語、表語whom,who,what,which,whoever,whatever,whichever定語whose,what,which狀語when,where,why,how不充當(dāng)成分that,whether,asif,asthough,becauseGrammarfocus表語從句一定是陳述語序。例：問題是他什么時候能到。

Thequestioniswhenwillhecome.Thequestioniswhenhewillcome.if可以引導(dǎo)賓語從句，但是不能引導(dǎo)表語從句，引導(dǎo)表語從句表達(dá)“是否”只能用whether。例：問題是他是否通過了測試。Thequestionisifhehaspassedthetest.Thequestioniswhetherhehaspassedthetest.SomeusefultipsGrammarfocus主句時態(tài)和表語從句時態(tài)可以不一致。例：問題是誰會陪我去巴黎。ThequestioniswhowillcompanymetoParis.

問題是他為何沒有上學(xué)。Thequestioniswhyhewasabsentschool.that引導(dǎo)表語從句時，和賓語從句不同，that不可省略。例：WhatIsaidwasthatIwouldgivehimabetterone.Theproblemisthatmillionsofpeopledieofillnessescausedbysmoking.Grammarfocus1.Thefactwasthathehadforgottenaboutit.2.Everythingremainedasitusedtobeinthisroom.3.Shelooksasifshewereill.4.Thetroublewaswhetherwecouldmanageitourselvesornot.5.Theproblemisnotwhowillgo,butwhowillstay.6.Thisishowtheyovercamethedifficulties.7.Itseemstomethatwedon’thavemuchchoice.8.Hemissedthelecture.Itwasbecausehisflightwasdelayed.Markthelinkingwordsinthefollowingsentencesandpayattentiontothewordsbeforethem.PracticePracticeAnswerthefollowingquestionsusinginformationfromthereadingpassageaswellasthepredicativeclauses.EXAMPLEWhatwasitthatJohnSnowshowedtotheworld?WhatJohnSnowshowedtotheworldwashowcholeracouldbeovercome.1.WhatwasSnow’sdiscoveryintwoparticularstreetsinLondon?Snow’sdiscoveryintwoparticularstreetsinLondonwasthat_______________________________________________________________.thecholeraoutbreakwassoseverethatmorethan500peoplediedintendaysPractice2.WhatwasSnowdeterminedtofindoutduringthe1854outbreakinLondon?WhatSnowwasdeterminedtofindoutwaswhy_______________________________________________________.theoutbreakofcholerahadcausedover500deathswithintendays3.WhatweretheexactplacesSnowmarkedonthemap?TheexactplacesSnowmarkedonthemapwerewhere________________________________________________.whodiedhadlived/allthedeadpeoplehadlivedallthosePractice4.WhatwasthefindingthatSnowannounced?Snow’sfindingwasthat__________________________________________________________________________________________________________________________.thewaterpumpwastoblamefortheofcholera/thepumpwatercarriedcholeragerms/waterfromtheBroadStreetpumphadbeeninfectedbywasteDavidistalkingtoMariaabouttheirscientificresearchproject.FirstcompleteDavid’slines(A-E),usingthewordsinthebox.ThenputDavid'slinesinthecorrectorderandpractisetheconversation.asifthatwhatwhowhenhowwhywhosewhichwhetherA:Absolutely.Youmaynotbelieveit,butthatwas

happenedattheinitialstageofourgroup’sresearchondevelopingavaccineformalaria.B:Yes,itis.Anditseemed

allthetheorieswereuseful,butthefactwas

wecouldn’tpersuadeoneanotherthatonetheorywasbetterthananother.C:Exactly.Theproblemwasnotabout

allourtheorieswereequallygood,butindeciding

theorytodependupon.D:Werealisedthatwhatwecaredaboutwasnot

aspectweneededtodevelopatheoryin,butrather

wecanreducethecostofavaccinewithoutreducingitseffect!E:You’reright.Atlast,webecamefocusedonthekeyissue,whichwas

wehadtocarryouttheresearchinthefirstplace.whatasifthatwhetherwhosewhywhichhowPracticeWhatfactorshelpuscontinuetheconversation?Tips:為了使整個語篇在意義上具有連貫性（coherence），無論是口頭語篇還是書面語篇都需要使用一些銜接手段，這些銜接手段主要包括三大類：邏輯紐帶（logicalconnector）、語法紐帶(grammaticalconnector）和詞匯紐帶（lexicalconnector）。口頭語篇還可以通過語音紐帶（phoneticconnector）銜接。PracticeMaria:Thismixoftheoryanddataisoneofthekeycharacteristicsofwhatwecallscience.David:AMaria:Withyourtheoreticalframework?David:___Maria:Decidingonatheoryisdefinitelyofcriticalimportance.David:___Maria:Thiswa