Unit 5 Power of Ideas Section A 2a-2d 课件（内嵌视频）2026-2027学年人教版英语九年级上册

Unit5PowerofIdeasSAWhatchangescaninventionsbringtoourlives?2a-2dThink&summarizeWhenwedescribeinventions,whatcanwetalkabout?InventionsNamePlaceoforigin原产地AppearanceUsage&FunctionHowitworksAdvantagesFeelingsWhatquestionscanweusetotalkaboutaninvention?Whatistheinventioncalled?Whichcountryisitfrom/madein?Whatisitusedfor/whatcanitdo?Howdoesitwork/run?Whatdoyouthinkofit/Whyisituseful?QuestionsIt’sa3Dprinter.What’sthis?Let’swatchWhatisa3Dprinter?Whichcountryisthefirst3Dprintermadein?Itisaspecialprinterthatcanmakerealobjects.Thefirst3DprinterwasinventedinUSAin1983.Somebasicinformationabout3Dprinters2a.Tickthethingsthatyouthinka3Dprintercanmake.Youcanaddmore.medicine armsandlegshearts toys tables shoescomputers houses chairs food ____________________smallpartsformachines2b.Listentotheconversationandanswerthequestions.1.WheredidHanLingolastweekend?2.Whywasthe3DprinterHanLin’sfavouriteinvention?HewenttotheInternationalExhibitionofInventions.Becausealmosteverythingunderthesuncanbemadebyit.First,theobjectis________onthecomputer.Then,afileis__________bythecomputer.Andthefileis________tothe3Dprinter.Next,thefileis_______bythe3Dprinter.Finally,theobjectis_________bybuildingupplastic.12345designedcreatedsentreadproducedreaddesignproducecreatesendElla:Hi,HanLin!DidyougototheInternationalExhibitionofInventionslastweekend?HanLin:Yes,someamazinginventionswereshownfromallovertheworld.Ella:Whatinventiondidyoulikethemost?HanLin:Oh,the3Dprinterwasamazing.Ella:Why?HanLin:Almosteverythingunderthesuncanbemadebyit.Ella:Really?Likewhat?HanLin:Well,allkindsofeverydayobjects.Toys,chairs,tables,andevenhousescanallbemadebythe3Dprinter.Ella:That’scool!询问周末是否去了发明展,引出“inventions”主题,交代背景询问对方最喜欢的发明是什么,核心对象聚焦通过追问喜欢的原因进一步深入话题追问具体例子,引出日常和医疗用途HanLin:Yeah.Andinmedicine,forexample,armsandlegs,andevenheartscan

becreated

bythe3Dprinter.Ella:That’sgreat!Howdoesitwork?HanLin:Well,first,theobjectisdesignedonacomputer.Then,afileiscreatedandsenttothe3Dprinter.The3Dprinterreadsthefile,andafterthat,theobjectisproducedbybuildingupplastic.Ella:Isonlyplasticused?HanLin:No,othermaterialscanalsobeusedtoproducethings.Itcanevenmakefood.Ell