高中英语Unit3InventorsandinventionsSection1WarmingUpandReading课件新人教版选修.ppt

,Inventorsandinventions,Unit3,牵手课堂,WordsandTheirStories:Grapevine（词汇掌故：小道消息）TheAmericaninventor,SamuelF.Morse,islargelyresponsibleforthebirthoftheexpression.Amongothers,heexperimentedwiththeideaoftelegraphysendingmessagesoverawirebyelectricity.WhenMorsefinallycompletedhistelegraphicinstrument,hewentbeforeCongresstoshowthatitworked.HesentamessageoverawirefromWashingtontoBaltimore.Themessagewas,“WhathathGodwrought?”ThiswasonMaytwenty-fourth,eighteenforty-four.,Quickly,companiesbegantobuildtelegraphlinesfromoneplacetoanother.Meneverywhereseemedtobeputtinguppoleswithstringsofwireforcarryingtelegraphicmessages.Theworkmanshipwaspoorandthewireswerenotputupstraight.Someoftheresultslookedstrange.Peoplesaidtheylookedlikeagrapevine.Alargenumberofthetelegraphlinesweregoinginalldirections,ascrookedasthevinesthatgrapesgrowon.Sowasborntheexpression,bythegrapevine.,SomewritersbelievethatthephrasewouldsoonhavedisappearedwereitnotfortheAmericanCivilWar.Soonafterthewarbeganin1861,militarycommandersstartedtosendbattlefieldreportsbytelegraph.Peoplebeganhearingthephrasebythegrapevinetodescribefalseaswellastruereportsfromthebattlefield.Itwaslikeagame.Wasittrue?Whosaysso?Now,asinthosefaroffCivilWardays,gettinginformationbythegrapevineremainssomethingofagame.Afriendbringsyouabitofstrangenews.“No,”yousay,“itjustcantbetrue!Whotoldyou?”Comestheanswer,“Igotitbythegrapevine.”Youreallycannotknowhowmuchifanyoftheinformationthatcomestoyoubythegrapevineistrueorfalse.Still,inthewordsofanoldAmericansaying,thepersonwhokeepspullingthegrapevineshakesdownatleastafewgrapes.,SectionWarmingUpandReading,栏目导航,.Readthetextandmatchthemainideawitheachparagraph.Part（Para.1）：（）A.Thediscoveryoftheproblemofthesnakes.Part（Para.23）：（）B.Therequirementofgettingapatent.Part（Para.46）：（）C.Theresearchontheapproachestosolvetheproblem.Part（Para.78）：（）D.Theattemptstocatchthesnakes.,A,C,D,B,.Scanthetextandchoosethebestansweraccordingtothetext.1.Thepurposeofthetextis_.A.toshowushowtotrapthesnakeswithoutkillingthemB.totellpeoplehowtoapplyforapatentofthewritersnewideaC.tointroducethewritersnewideaoftrappingthesnakesandherapplicationforapatentD.totellthereadershowtogetanewideaandmakeitapatent答案：C,2.Thewriterwassuccessfultocatchthesnakesin_.A.thethirdattemptB.thesecondwayC.thefirsttryD.everymethod答案：A3.Howdidthewritercatchthesnakes?A.Usingsomethingthesnakeswereinterestedtoattractthemintoatrap.B.Takingtheirhabitattoanotherplace.C.Placingthesnakesatlowtemperatureforthemtosleepandthencaughtthem.D.Usingapoletoleadthesnaketoanarrowhole.答案：C,4.Whydidcoolingthesnakesmakethemlessactive?A.Becausesnakesarewarm-bloodedanimals.B.Becausesnakeslikehightemperature.C.Becausesnakesarecold-bloodedanimalsandtheyusuallyhibernate（冬眠）inwinter.D.Becausesnakesareafraidofcoldconditions.答案：C,5.WhichstatementisTRUEaccordingtothetext?A.Thesnakesweresosleepyinthesecondattemptthattheycouldntbitethewriteratall.B.Yourproductmustbedifferentfromeverybodyelsesifyouwanttoreceiveapatent.C.Thewriterdecidedtosendherinventiontothepatentofficethemomentshesucceededincatchingthesnakes.D.Ifanapplicationforyourproductprovestobevalid,youcangetapatentimmediately.答案：B,.Completethefollowingpassagewiththewordsinbracketsintheirproperformsorthewordsfromthetext.WhenIcalledupmymother,shetoldmesnakescamenearthehousenowandthenandthesnakesseemed1._(make)homethere.Herewasachanceforme2._(distinguish)myselfbyinventingsomething3._(mercy)thatwouldcatchsnakes.Itriedtofindsomeproductsthatmighthelpme,butthereonlyseemedtobepowders4._(design)tokillsnakes.Isetabout5._(research)thehabitsofsnakes.6._(prepare)withsomeresearchfindings,Idecidedonthreepossible7._(approach).,tohavemade,todistinguish,merciful,designed,researching,Prepared,approaches,LaterIchosethelastonetocoolthesnakessothattheywouldbecomesleepyandcouldbeeasilycaught.Mythirdattemptwassuccessful,Icarriedinmyhandasmallnetinthe8._(expect)thatthesnakeswouldbiteagain.But9._(monitor)carefully,thesnakesprovedtobenotrouble.Icollectedthepassivesnakesandthenextdaywe10._(merry)releasedthemallbackintothewild.,expectation,monitored,merrily,Pointdistinguishvi.youshouldcallinthedoctorrightaway.他病了，你应该立即请大夫来。Hedecidedtocalloffhisregularpressconference.他决定取消他的定期记者招待会。,单句语法填空。(1)Thesmelloftheseacalled_memoriesofherchildhood.解析：callup使回忆(2)Thegamewascalled_becauseofbadweather.解析：calloff取消(3)Call_thenumberssothatwecanhearthemattheback.解析：callout大声地喊(叫),up,off,out,(4)Whydontyoucall_mysisterwhenyoureinBrighton?解析：callon拜访（某人）(5)Illcall_youat8oclockandwellgotheretogether.解析：callforsb.接(人)(6)Carswithseriousfaultshavebeencalled_bythemanufacturers.解析：callin收回；召回,on,for,in,Pointnowandthen偶尔；有时,Snakescomenearthehousenowandthen.(教材P20)蛇时不时地爬到屋子附近。IstillclimbtheFujiMountaineverynowandthen.我现在还偶尔爬爬富士山。Ihavebeenknowntomakeacarelesserroreverynowandthen.大家都知道我总是时不时犯些粗心的错误。,表示“有时，不时，偶尔”的短语还有：fromtimetotimeonceinawhilesometimesoccasionallyattimes,Shegoestotakecareofhergrandmotherfromtimetotime.她隔三差五地去照顾她的奶奶。Iwatchedthingschangeandmadeobservationseveryonceinawhile.我观察着事物的变化，时不时地提出我的意见。Ilikeromances,butoccasionallyIwatchactionmovies,too.我喜欢爱情片，但偶尔也看看动作片。,单句改错。(1)Thissectionoftheroadisverynarrowthatthereareboundtobetrafficjamsnowandthen.(2)Playingcomputergameseverynoworthenisaninterestingentertainment,butanaddictiontothemwouldsurelydetachpeoplefromtheirtimecommitmenttonormalworkandstudy.解析：句意：偶尔玩一下电子游戏是一种非常好的娱乐方式，但是一旦上瘾就会影响人们正常的学习和工作的时间投入。,so,and,Pointsetaboutsth./doingsth.=setouttodosth.开始；着手,Isetaboutresearchingthehabitsofsnakestofindtheeasiestwaytotrapthem.(教材P20)于是我就着手研究蛇的习性，以便能找到最容易的方法捉住它们。Peoplesetaboutsettinguptheirnewhomeswiththehelpofthegovernment.=Peoplesetouttosetuptheirnewhomeswiththehelpofthegovernment.在政府的帮助下，人们开始创建他们的新家园。,setout出发,启程;开始setoff出发,动身；引爆，引发setaside留出；对不予以考虑setdown记下,写下setup建立，开办；开业；竖立,Wesetaboutourtaskatoncewithgreatenthusiasm.我们以极大的热情立即着手这项任务。Thateveninghesetaboutwritingareportonpollution.那天晚上,他着手写一篇关于污染的报告。Hearingthenews,thepoliceimmediatelysetoff/outforthespot.听到这个消息，警察立刻动身赶往现场。Ihavesetdowneverythingthathashappened.我已经把所发生的一切都记录了下来。,用由set构成的短语的适当形式填空。(1)We_discussingwhenandhowweshouldfinishthetask.(2)Thesoonerwe_setaboutit,thesoonerwellfinishit.(3)Asatraditionalwaytocelebratethenewyear,_firecrackersiswelcomedbymostChinesepeople.(4)Heisusedto_hisimportantthoughtsinhisdiary.,setabout,setabout,settingoff,settingdown,考点三句型归纳,Point状语从句的省略：连词+v.|ed/v.|ingBetweentheoutsideandtheinsidewallsofthebowlthereissomejelly,whichfreezeswhencooled.（教材P20）,在碗内外侧有一些果冻，冷却时它们冻得很结实。点拨：这里的whencooled相当于whenit（thejelly）iscooled。过去分词（也包括现在分词）作状语时常常可以和从属连词同时使用。当when/while/if/unless引导的状语从句中的主语与主句的主语相同,或从句主语是it,谓语中包含be时，可将从句中的主语与be省去，用“when/while/if/unless+doing/done/adj./prep.”结构表示从句内容。,Whenofferedhelp,youshouldsay“thankyou”or“itsverykindofyou”.=Whenyouareofferedhelp,youshouldsay“thankyou”or“itsverykindofyou”.当你被提供了帮助时，你应该说“谢谢你”或“你真是太好了”。Youmustbecarefulwhencrossingthestreet.=Youmustbecarefulwhenyouarecrossingthestreet.你过街时要小心。,Seenfromthehill,thecityisbeautiful.=IfWhenthecityisseenfromthehill,thecityisbeautiful.如果（当）从山上看这座城市，它很美。Seeingfromthehill,youcanseethatthewholecityisbeautiful.=IfWhenyouseefromthehill,youcanseethatthewholecityisbeautiful.如果（当）你从山上看这座城市，你会发现整座城市很美。,单句改错。(1)Teachersandactors,ifcomparingwitheachothercarefully,sharemanysimilarities.(2)Suchknowledgeisstillusefulwhen/isappliedtosimilarsituationsinothercountries.,compared,it,Pointtherebe句型,ThefirstthingIdidwastoseeiftherewereanyproductsthatmighthelpme,butthereonlyseemedtobepowdersdesignedtokillsnakes.(教材P20)我所做的第一件事就是看看有没有现成的产品能帮助我，但是，看来只有一种毒杀蛇的药粉。点拨：本句为but连接的两个并列分句，句中thereseemedtobe是therebe句型的变体，表示“似乎有”。,therebe句型有多种变体，主要有：(1)There+seem/happen/appeartobe+主语+其他(2)There+stand/lie/live/exist/remain/+主语+其他(3)There+情态动词+be+主语+其他(4)There+usedtobe+主语+其他(5)Therebeing+句子(独立主格结构),Thereseemedtobesomethingwrongwithmypen.我的钢笔好像有毛病。Therehappenedtobeapolicemantherewhenwewereintrouble.当我们身处困境时，碰巧那儿有个警察。Therestandsabigtreeinfrontofourbuilding.在我们的大楼前面矗立着一棵大树。Thereusedtobeabridgeacrosstheriver.过去有一座桥横跨这条河。Therebeingnomilk,hewenttothesupermarkettobuysome.由于没有牛奶了，所以他去超市买了一些。,单句改错。(1)Itseemedtobesomethingstrangeatthecomingmeeting.解析：Thereseemedtobe似乎有(2)Herelivedanoldmanatthefootofthemountain.解析：Therelived(某人)住在,There,There,Point“Only+状语”引起的部分倒装结构,Onlyafteryouhavehadthatrecognitioncanyousaythatyouaretrulyaninventor.（教材P21）只有获得了认证，你才可以说是一个真正的发明者。点拨：句中Only修饰after引导的时间状语从句，canyousay运用了部分倒装形式。以only开头的句子，如果only修饰的是句子的状语或状语从句，主句要部分倒装，但only修饰主语时，句子不倒装。Onlybyproducingvehiclewhichispoweredwithsolarenergycanwesolvetheproblemoffuelshortage.只有通过生产用太阳能驱动的交通工具我们才能解决能源短缺问题。,Onlywhencompetitioncombineswithcooperationcanithelpinobtainingourgoalsandsatisfyingourneeds.只有把竞争和合作相联合，才能有助于我们达到目标并满足自身需求。Onlyinthiswaycanyoumakeimprovementi