Unit10I’vehadthisbikeforthreeyears.SectionAGrammarFocus—4dTeachingAims1.KnowledgeAims(1).Studentscanusethekeystructures:①—Howlonghaveyouhadthatbikeoverthere?那边的那辆自行车你买了多长时间了？—I’vehaditforthreeyears.我买了三年了。②Howlonghashissonownedthetrainandrailwayset?他的儿子拥有这套轨道火车多长时间了？He’sowneditsincehisfourthbirthday.自他四岁生日起，他就拥有了它。③Haveyoueverplayedfootball?你曾经踢过足球吗？Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.(2)Thedistinctionbetweensimplepasttenseandpresentperfecttense.2.AbilityAims(1)Learnandmasterhowtotalkaboutpossessionsandthingsaroundyoubyusingthelanguagechunks.(2)Studentscanmakeadistinctionbetweensimplepasttenseandpresentperfecttense.(3)Studentscanmakeadistinctionbetweensinceandfor.3.MoralAimsEducatestudentstotreasureeverymomentthatwehave.TeachingKeyPoints(1)Learnandmasterhowtotalkaboutpossessionsandthingsaroundyoubyusingthelanguagechunks.(2)Studentscanmakeadistinctionbetweensinceandfor.TeachingDifficultPoints(1)Thedistinctionbetweensimplepasttenseandpresentperfecttense.(2)StudentscanmakeadistinctionbetweensinceandforTeachingMethodsTheactivityteachingmethod,thecooperativelearningmethod,andthetask-basedlanguageteachingmethod.TeachingAidsPPT.TeachingProceduresStep1Warming-up1.EnjoyanEnglishsong.2.Showsomepicturestothestudentsandgetthemtoaskandanswerlikethis:A:Howlonghaveyouhadthisbike?B:I’vehaditfortwoyears.Step2GrammarFocus1.Showthestudentssomepicturesoffleamarketandaskthemtoaskandanswerinpairslikethis:—Howlonghaveyouhadthisbook?—Foraweek./Sinceaweekago.—Haveyoueverplayedbasktall?—Yes,Ididyesterdayafternoon.2.Thestudentsreadthegrammarandfillintheblanks:1)—Howlong______youhadthatbikeoverthere?—I'vehadit_____threeyears.2)—Howlong______hissonownedthetrainandrailwayset?—He’sownedit______hisfourthbirthday.3)—________youeverplayedfootball?—Yes,IdidwhenIwaslittle,butI________playedforawhilenow.3.Explainthedistinctionbetweensinceandfor.for与since都能与现在完成时连用，但区别较大：①for后须接“时间段”HehasstudiedEnglishforfiveyears.他学英语5年了。②since后须接“时间点”HehasstudiedEnglishsince1999.他从1999年开始学英语③二者可以转换for+一段时间=since+一段时间+agoHehasbeenhereforfiveweeks.=Hehasbeenheresincefiveweeksago.他到这儿已经有五个星期了④二者引出的时间状语往往用howlong提问。●—Ihavehadthisbookfortwoweeks.—Howlonghaveyouhadthisbook?●—Ihavehadthisbooksincetwoweeksago.—Howlonghaveyouhadthisbook?4.Explainthedistinctionbetweensimplepasttenseandpresentperfecttense.①一般过去时表示在过去某个时间发生的动词或存在的状态，也表示过去经常或反复发生的动作。e.g.Hecamehereyesterday.②现在完成时表示过去的动作（或状态）对现在产生的影响和结果e.g.Hehasbrokenhisbottle.③构成不同TomwenttoLondonlastyear.LilyhasbeentoLondontwice.一般过去时的谓语动词用过去式，现在完成时的谓语用“助动词have/has+过去分词”④用法不同:现在完成时是表示过去的动作与现在的联系，主要说明的是现在的情况和状态；而一般过去时则强调动作发生在过去某一时间，与现在不发生联系.Ihadsupperanhourago．我一小时前吃的晚饭。（表示过去的动作）Ihavejusthadsupper．我刚刚吃过晚饭。（强调对现在的影响———我不饿）Hewasateacherthen．他那时是个教师。（表示过去的状态）Hehasbeenateachersincethen．他从那时起一直当教师。（他现在还是教师）⑤一般过去时常与表示过去的具体时间状语连用，现在完成时常与表示一段时间的时间状语连用，或无时间状语。一般过去时的时间状语：yeste...
