人教新目标版九上英语Unit6SectionA（GF-4c）【教案】

Unit6Whenwasitinvented?SectionA（GF-4c）TeachingAims1.语言能力：了解电话发明的过程。2.思维品质：学会运用一般过去时的被动语态改写句子。3.学习能力：恰当使用一般过去时的被动语态。TeachingDifficulties被动语态的用法TeachingAidsmultimediacoursewareorotherrealiathattheTneedsforteachingTeachingProceduresTipsStep1Warmingup猜发明不是重点，重点是通过这个活动练习使用被动语态。PairWorkAskSstopairup.S1thinksofaninventionandS2asksquestionsaboutit.S2shouldguesswhattheinventionisbyaskingthequestions.(Tip:SscanfollowtheexampleonPPTP8,ortheycanmaketheirownconversation.TshouldencourageSstousethepassivevoice.)Step2Presentation&PracticeShowSssentenceswithactivevoiceandpassivevoice,askthemtofindoutthedifferencesbetweenthem.Usethesentences“WhitcombJudsoninventedthezipperin1893.”and“ThezipperwasinventedbyWhitcombin1893.”asanexample,askSstopayattentiontothepositionchangeofeachsentencecomponent.GrammarFocusAskSstoreadthesentencesintheboxandexplaintheusageofpassivetothem.语态是动词的一种形式，用来说明句中主语和谓语动词的关系。如果主语是动作的执行者，则使用主动语态；如果主语是动作的承受者，则使用被动语态。被动语态有“be动词+过去分词”构成，如果要特别强调动作或行为的执行者时，句子后面需接by...，译为“被/由”。其中be动词要根据人称、数和时态发生变化、be动词后面的过去分词不变。被动语态的肯定句：主语+be+过去分词+(by...).被动语态的否定句：主语+benot+过去分词+(by...).被动语态的一般疑问句：Be+主语+过去分词+（by...）?被动语态的特殊疑问句：疑问词+be+主语+过去分词+（by...）?4aAskSstorewritethesentencesusingthepassivevoice.Answers:1.Thefridgewassoldatalowprice.2.Mycamerawasstolenfrommyhotelroom(bysomebody).3.Wherewerethesephotostaken?4.Wewereadvisednottogooutalonebyourparents.5.Thebookwastranslatedintodifferentlanguagesbydifferentwriters.4bAskSstocompletethesentenceswiththecorrectformsoftheverbsinthebox.Answers:1.wereinvited2.werebrought3.waslocked;rang4.weretold;broke5.wereeaten;liked4cAskSstoreadtheshortpassageanddecidewhetheractiveorpassiveformsshouldbeusedinthesentences.Answers:wasinvented,wasborn,worked,learned,wasinvented,wassaid,isusedStep3Summary&HomeworkSummaryAskSstodotheexercisesfromPPTP23-24.HomeworkPreviewSectionB1a-1e.Dotheexercisesinstudents’book.TeachingReflectionInthisperiod,studentsshouldlearn