九年级英语上册 Unit 4 Topic 1 When was it invented Section B课件 （新版）仁爱版.ppt

Unit4AmazingScience,Topic2Whenwasitinvented?,SectionB,Greatinventionsmakeourlifecolorful!Pleasechooseonetotalkabout.,EnglishLearningMachine/Around2005/BeijingRenaiEducationInstitute/learnEnglish,digitalcamera/1975/America/takephotos,MP3player/1998/Korea/listentomusic,mobilephone/1973/America/communicateeasily,Sciencemakeourworldwonderful!,Michael,JaneandtheirclassmatesarevisitingtheScienceMuseum.,Look,alightbulb!,Whenwasitinvented?Whowastheinventor?,Listenandanswerthequestions.,In1987,byThomasEdison,Read1aandfilloutthetable.,Radio,Airplane,ThomasEdison,WilburandOrvilleWright,1879,1895,重点词（组）和句型1.inourdailylifeinoureverydaylife2.inventv.inventorn.inventionn.Theinventorsinventedmanygreatinventions.3.Itssaid/reportedthat-clause.4.duringoneslifeinoneslife,invent/America/in1946,A:Wherewerecomputersinvented?B:TheywereinventedinAmerica.A:Whenwerecomputersinvented.B:Theywereinventedin1946.,Lookandtalkaboutthepicture.,Pairwork.Makeupdialogsaftertheexample.,Shenzhoulauch/inChina/in2008,PiratesoftheCaribbeandirect/byGoreVerbinski/in2006,laptop,invent/inJapan/in1985,Knowsomethingaboutscience.,Cloning-afamousexperiment,theclonedsheep-wascreatedinScotlandafewyearsago.,theclonedmice,theclonedcows,theclonedpigs,theclonedanimals,Listenandanswerthequestions.,1.Whatsthenameoftheclonedsheep?Dolly.2.Whatanimalshavethescientistsclonednow?Sheep,rabbits,cows,mice,pigsandsomeotheranimals.3.Whatisusedincloning?DNA.4.IsyourDNAsimilartoyourparents?Yes,itis.5.Whatdoesthewriterwanttoclone?Whatdoyouwanttoclone?Why?,3b,Groupwork,Read3aagainanddiscussthefollowingquestions.,1.WhoisDollyandwhatisusedincloning?2.Whataretheadvantagesanddisadvantagesofcloning?,()1.Theclonedsheep,Dolly,wasclonedinCanada.()2.Scientistshaveclonedpigs.()3.EverypartofourbodyhasdifferentDNA.()4.ThereisDNAinalllivingthings.,Read3aandmarkthestatementsTrue(T)orFalse(F).,T,T,F,F,1.DoyouknowaboutDolly,theclonedsheep?IamgoingtobuyacarmadeinChina.,4.besimilarto与相似thesameas，asas与一样,疑难解答,2.DNA脱氧核糖核酸DNAfingerprintingDNA指纹鉴定,Retellthepassage:Wouldyouliketosaysomethingaboutthefamousexperiment?,CloningDolly-createdinScotlandotherclonedanimalsDNAthesameasbesimilartoexactlythesame,InventorYearA.KarlBenza.1925B.JohnBairdb.1876C.AlexanderGrahamBellc.1885,Listentothetape,choosethecorrectanswersandfillintheblanks.,A,C,B,c,b,a,当堂检测一、词组互译,1.科技博物馆_6.Itissaidthat_2.在日常生活中_7.thesameas_3.与不同_8.besimilarto_4.迄今为止_9.duringoneslife_5.从中克隆的_10.bemadeinto_,二、选择合适短语填空，并注意其适当形式。,bedifferentfrom,takephotos,besimilarto,sofar,thesameas,1.TheweatherintheUSA_thatinAustralia.2.Thestudenthasmade_mistakes_hedidlasttime.3.Digitalcameraisusedfor_._,moreandmoreteenagersinAmericahaveshowedgreatinterestinlearningChinese.5.GroupThreesopinions_ours.,aresimilarto,thesame,as,takingphotos,isdifferentfrom,Sofar,三、用所给词的适当形式填空。,1.Itwasusedinour_study.(day)2.Theairplaneisdifferentfrom_.(today)3.Ithinkthefilmwas_byZhangYimouin1998.(direct)4.Edison,anAmerican_,createdmanythings.(invent)5.Sofar,theyhave_manyanimals.(clone)6.Shenzhou_(launch)in2005.,daily,todays,inventor,cloned,directed,waslaunched,四、根据句意及首字母提示写出单词。,1.GuglielmoMarconiisthei_oftheradio.2.Thiskindofmachineisw_usedforharvestinginthecountryside.3.Nowadaysmoreandmorepeopleusemobilephonestoc_witheachother.4.Shakespearec_manyfamouscharacters,suchasHamlet,Romeo,Julietandsoon.5.Thegovernmentistryingoutanewe_incity