人教新目标版九上英语Unit6SectionA（2a-2d）【教案】

Unit6Whenwasitinvented?SectionA（2a-2d）TeachingAims1.语言能力：了解发明的用处。2.文化意识：懂得发明的重要性。3.思维品质：学会表达发明被用作什么。4.学习能力：用一般过去时的被动语态谈论发明的历史。TeachingDifficulties用一般过去时的被动语态谈论发明的历史。TeachingAidsmultimediacoursewareorotherrealiathattheTneedsforteachingTeachingProceduresTipsStep1WarmingupGiveSsacontextandaskthemtothinkaboutsolutionsfortheproblems.Whatinventionscanyoumaketosolvetheseproblems?1.Youalwayshityourtoeagainstsomethingonthewaytosomewhereatnight!2.Youwantedtogetascoopofice-creamfromthebucket,buttheice-creamwastoohard!Step2Presentation&PracticePre-listeningShowSsPPTP9,askthemtolookatthepictureandanswerthequestions.1.Whatcanyouseeonthetable?2.Whatistheboydoing?3.Whatisthegirldoing?4.Whatisthescoopusedfor?5.Whataretheshoesusedfor?While-listening2aPlaytherecording,askSstolistenandnumbertheinventionsintheordertheyhear.Answers:3shoeswithspecialheels1shoeswithlights2hotice-creamscoop,runsonelectricity2bPlaytherecordingagain.AskSstolistenandcompletethechart.Answers:1.changing2.inthedark3.servingOptionalchoice:AskSstolistenagainandanswerthequestions.1.Whyareshoeswithlightsneededbypeople?2.Whyisthehotice-creamscoopneededbypeople?3.Howisthestyleofshoeschanged?Post-listening2cInpairs,getSstospeakwitheachotherabouttheinventionsmentionedin2aand2b.AskSstomaketheirconversationsmoreinterestingbycomingupwithmoreusesforthethreeinventions.(Tip:EachSshouldcomeupwithonealternativeuse.)Optionalchoice:Showmoreinterestinginventions(PPTP16-20)toSsandaskthemtotelltheusageforeach.Step3Presentation&ReadingPre-readingShowapictureofzipperandaskwheretheycanseeit.GivesomeexamplestoSs(backpack,jacket,wallet,keychain)andencouragethemtothinkaboutmorethingswithzippers.While-readingAskSstoreadtheconversationin2dandanswerthequestions.1.Whoinventedthezipper?2.Whenwasthezipperinvented?3.Whenwasitfirstusedwidely?PlaythevideoforSs.Askthemtorole-playtheconversation.Post-readingAskSstothinkandanswerthequestions:Arethereanyotherinventionsthathavegreatinfluenceonpeople’slives?Howdotheychangepeople’slives?(Tip:Tcanalsotreatthesequestionsasaproject.TcanaskSstoworkingroups,lookupsomeinformationabout“inventionswhichhaveinfluenceonpeoplelives”onnetandmakeapresentationinnextclass.)Step4Languagepointslearningbeusedforsth./doingsth.意为“被用来做某事”，表示用途或目的，后接名词或动名词，相当于beusedtodosth.beusedfor,beusedby和beusedas的区别是：beusedfor意为“用来做”，后面跟名词、代词或者是v-ing形式，表示目的、用途，相当于beusedtodosth。beusedby意为“被使用者”，后面跟使用者。beusedas意为“被当做使用”。Mypleasure也可说成It’sa/mypleasure.或Apleasure.意思是“我的荣幸；愿为你效劳；这是件愉快的事”。mention表示“提到；提及”，是及物动词，其后接名词或代词作宾语时，无需用任何介词；另外注意不接双宾语。若后接动词，要用动名词，不能用不定式。nottomention意为“更不用说；还不算”。口语中说Don’tmentionit.主要用来回答感谢，有时也用来回答道歉。Step5Summary&HomeworkSummaryAskSstodotheexercisesonPPTP35.Homework:Previewthepassagein3a.Dotheexercisesinstudents’book.TeachingReflectionInthislesson,themostimportantthingistolearnthepassivevoiceinthepasttenseandteachstudentspastparticipleforms.We