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1、Unit6Whenwasitinvented?TheFirstPeriodSectionA(1a-2d)1aLookatthethingsbelow.Inwhatorderdoyouthinktheywereinvented?Discussthemwithyourgroup.Thennumberthem[1-4](1=first,4=last).A:IthinktheTVwasinventedbeforethecar.B:Well,IthinktheTVwasinventedafterthecar.12341bList
2、enandmatchtheinventionswiththeyears.______1876______1885______1927______1971dacb1cStudentB,coverthedates.StudentA,askStudentBwhenthethingsinthepicturein1bwereinvented.Thenchangerolesandpracticeagain.A:Whenwasthetelephoneinvented?B:Ithinkitwasinventedin1876.hotic
3、e-creamscoop,runsonelectricityshoeswithlights1shoeswithspecialheels232aListenandnumbertheinventions[1-3]intheorder youhearthem.2bListenagainandcompletethechartbelow.InventionWhatisit/aretheyusedfor?shoeswithspeciallights__________thestyleoftheshoesshoeswithlight
4、sseeing______________hotice-creamscoop_________reallycoldice-creamchanginginthedarkserving2cMakeconversationsusingtheinformationin2b.A:Whataretheyusedfor?B:They’reusedfor...Paul:HeyRoy,thesubjectformyschoolprojectis“Smallinventionsthatchangedtheworld.”Canyouhelp
5、methinkofaninvention?Roy:Withpleasure!Letmethink...hmm...Iknow!Thezipper!Paul:Thezipper?Isitreallysuchagreatinvention?Roy:Thinkabouthowoftenit’susedinourdailylives.Youcanseezippersondresses,trousers,shoes,bags...almosteverywhere!2dRole-playtheconversation.Paul:W
6、ell,youdoseemtohaveapoint...Roy:Ofcourse!IthoughtaboutitbecauseIsawawebsitelastweek.Thepioneersofdifferentinventionswerelistedthere.Forexample,itmentionedthatthezipperwasinventedbyWhitcombJudsonin1893.Butatthattime,itwasn’tusedwidely.Paul:Really?Sowhendiditbecom
7、epopular?Roy:Around1917.1.invent的用法inventv.发明,inventionn.发明,inventorn.发明者。e.g.:Edisonwasagreatinventor.Heinventedalotofthings.【辨析】invent,discover,find与findout①invent意为“发明，创造”，主要通过想象、研究、劳动创造出前所未有的东西，尤指科技上的发明创造。②discover指发现或偶然发现原来就存在但一直未被认识的事物。③find强调寻找的结果，即“找到”，通
8、常指偶然发现。④findout指经过观察、调查，把某事、某物查出来，搞清楚、弄明白。LanguagePoints2.Isitreallysuchagreatinvention?（教材第42页）such形容词，意为“这样的，如此的”，常用在句中作定语，其结构为“such(a/an)+adj.+n.”。e.g.:There'snosu
