Unit 1 Discovering Useful Structures 课件-2022-2023学年高中英语同步备课（人教版2019选择性必修第二册）

【版本：人教册别：选必二】

DiscoveringusefulstructuresUNIT1SCIENCEANDSCIENTISTScontentsⅠⅡ

HomeworkIIIIVObserveandDiscoverPracticeandApplyLeadinⅠLeadin①Hisdreamis

todefeatCholera.②Hefinallybecame

asuccessfulscientist.③Thecausesofthediseaseremain

unknowntothepublic.④Theresultsoftheexperimentsound

reasonable.LearnaboutsomethingaboutJohnSnowandanalyzewhatpartdoestheunderlinedpartserveasineachsentence.表语①WhatJohnSnowshowedtotheworldwas

howcholeracouldbeovercome.②TheexactplacesSnowmarkedonthemapwere

whereallthosewhodiedhadlived.③Snow’sfindingwas

thatthepumpwatercarriedcholeragerms.表语从句的概念系动词表语从句Observethesentencesandthinkaboutwhatisapredicativeclause.系动词表语从句表语从句系动词在复合句中，位于_________之后，充当________的名词性从句称作表语从句。表语系动词可以接表语从句的系动词有:be;feel,seem,look,appear,sound,taste,smell;remain,keep,stay;become,get,grow,turn,go,come,run,fall;prove,turnout.表语从句的概念ⅡObserveandDiscoverIngeneral,doctorsinthosedayshadtwocontradictorytheoriestoexplainhowcholeraspread.Onetheorywas______badaircausedthedisease.Anotherwas______cholerawascausedbyaninfectionfromgermsinfoodorwater.(Para.2)

Whatismore,inanotherpartofLondon,awomanandherdaughterhaddiedofcholeraaftermovingawayfromBroadStreet.Itseemed______thewomanlikedthewaterfromthepumpsomuchthatshehaditdeliveredtoherhouseeveryday.(Para.3)一、that

引导的表语从句thatthatthatthat

____意义，在表语从句中______成分,起______作用，________省略。无不充当连接不能Thequestionis_________

wecanrelyonhim.Heoftentellslies.Thequestionis_________

wecanfinishthetaskontime,forwehaveonlythreedaysleft.二、whether引导的表语从句whetherwhether思考：可以用“if”来引导吗？连接词whether起_____作用，意为“_________________”，在句中也不作任何成分（注意：if

______引导表语从句)。连接是否、究竟、到底不能三、what,which,who,whom,whose等引导的表语从句Tomisnolonger_______heusedtobe.Thequestionis_______ofusshouldcomefirst.(我们两个中的哪一个)Theproblemis______

isreallyfitforthehardjob.Theimportantthingis_______nameshouldbeputonthetopofthelist.whatwhichwhowhose连接代词what,which,who,whom,whose

除在句子中起______作用外，还可在从句中作_____、_____或______，且各有词义。连接主语表语定语四、where,when,why,how引导的表语从句That’s

_______

Ican’tagreewithyou.Thisis

______

Sarawaslateforthemeeting.(Shemissedtheearlybus.)Thisis

_____

theyovercomethedifficulties.Mystrongestmemoryis

______

IattendedanAmericanweddingasachild.wherewhyhowwhen连接副词where,when,why,how除在句中起______作用外，在从句中还充当_______、______、______或______状语，本身具有词义。连接时间地点方式原因Itseems__________________hedoesn’tknowtheanswer.Itlooks__________________itisgoingtorain.五、asif/asthough引导的表语从句asif/asthoughasif/asthoughasif/asthough引导的表语从句常置于_________look,seem,sound,be,become

等_________。系动词后面Thereasonwhyheislateforschoolis________

hemissedthebus.2.Whywedecidedtoputoffthefootballmatchis

________

theweatherwastoobad.thatthat当主句的主语是_____________或why引导的__________时常用______来引导表语从句，而不用because。thereason主语从句thatAttention3.Ithinkthat’s

_____

hewassoangry.4.Ithinkitis________youaredoingtoomuch.5.Thereason______hewassolateis_____itwasraininghard.whybecausethat/this/it+is/was+why+________(原因/结果)

表示“_________________________”that/this/it+is/was+because+_______(原因/结果)

表示“________________________”thereasonwhy…isthat…中why是引导_________，that引导的是_________，表示“___________________”。这/那就是……的原因原因这/那就是因为……结果whythat定语从句表语从句……的原因是……Attention6.Mysuggestionisthatwe____________(go)andhelphim.7.Myadviceisthatwe____________(get)therebytrain.(should)go(should)get当主句的主语是表示建议（suggestion,advice）、命令（order）、要求（request,proposal）、计划（plan）等的名词时，表语从句要用虚拟语气，即（should）+动词原形。AttentionⅢPracticeandApply1.Myworryisifhecangetthereontime.2.Thereasonwhyhefailedwasbecausehehadn’tstudiedhard.3.Myadviceisthatheseesthedoctorrightaway.4.Thetroubleiswhatweareshortofmoney.thatPracticeandApplywhetherthatsee即学即练改错Completethefollowingideasbyfamousscientistswithawordorexpressionthatintroducesapredicativeclauseandtranslatetheminyourownwords.Researchis_________I’mdoingwhenIdon’tknowwhatI’mdoing.(WernervonBraun)whatasthoughbecausethatwhatwhoeverwhyPracticeandApply研究就是当我不知道自己在做什么的时候我在做的事。

——布劳恩（徳裔美籍火箭科学家）2.Thesaddestaspectofliferightnowis_______sciencegathersknowledgefasterthansocietygatherswisdom.(IsaacAsimov)thatasthoughbecausethatwhatwhoeverwhyPracticeandApply当下生活最可悲的一面就是科学积累知识的速度超过了社会积累智慧的速度。——艾萨克·阿西莫夫

（美国科幻小说作家、化学家）3.Anexpertcanbe_________hasmadeallthemistakesthatcanbemadeinaverynarrowfield.(NilesBohr)whoeverasthoughbecausethatwhatwhoeverwhyPracticeandApply专家可能是在一个非常狭窄的领域里犯了所有可能犯的错误的人。——尼耳斯·玻尔（丹麦物理学家）4.Whendifferentexperimentsgiveyouthesameresult,itisnolongersubjecttoyouropinion.That’sthegoodthingaboutscience:Itistruewhetherornotyoubelieveinit.That’s_________itworks.(NeildeGrasseTyson)whyasthoughbecausethatwhatwhoeverwhyPracticeandApply当不同的实验呈现出相同的结果时，它就不再受制于你的意见。这就是科学的好处:不管你信不信它都是真的。这就是科学工作的原理。

——奈尔·德葛拉司·泰森（美国天文学家）5.Thisappliedscience,whichsavesworkandmakeslifeeasier,bringsuslittlehappiness.Thatis_________wehavenotyetlearnttomakesensibleuseofit!(AlbertEinstein)becauseasthough