九年级英语全册unit6whenwasitinvented教案4新版人教新目标版(1)

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1、Unit6WhenwasitinventedSectionA4(GrammarFocus-4c)一、Teachingaims：1.KnowledgeObjects：1)Keywords2）Makeastepfurthertoconsolidatethenewwordsandphrases3）Tofurtherlearntousethepassivevoiceofthepasttense.2.MoralObjects：：Inthefaceofdifficultproblems,withapositiveattitudetosolve,二、TeachingKe

2、yPointsandDifficulties1.TeachingKeyPoints：1)Learnthenewwords:fridge,low,somebody,translate,lock,earthquake,sudden,allofasudden,biscuit,cookie,instrument2)ReviewthewordsandphrasesinSectionA.2.Difficulties：1)Thegeneralpasttenseofthesentenceintothepassivevoice.2)Comprehensiveuseofthe

3、knowledgetopracticetheuseof.三、TeachingProcedures:Ⅰ.Warming-upandrevision1.Haveadictationofthenewwordslearnedinthelastclass.2.Reviewsomemainphraseswelearnedinthelastclass.Checkthehomework.3.LetsomeSstellsomethingabouthowteawasinventedbyaccident.Tellsomethingabouthowteawasinventedby

4、accident.OnedayShenNongwasboilingdrinkingwateroveranopenfire.Someleavesfromateaplantfellintothewaterandremainedthereforsometime.Itproducedanicesmellsohetastedthebrownwater.Itwasquitedeliciousandoneoftheworld’sfavoritedrinkwasinvented.TellsomethingaboutLuYuandhisChaJing.LuYu“thesai

5、ntoftea”mentionedShenNonginhisbookChaJing.Thebookdescribeshowteaplantsweregrownandusedtomaketea.Italsodiscusseswherethefinesttealeaveswereproducedandwhatkindsofwaterwereused.ItisbelievedthatteawasbroughttoKoreaandJapanduring6thand7thcenturies.InEngland,teadidn’tappearuntilaround16

6、60.TheteatradefromChinatoWesterncountriestookplaceinthe19thcentury.Ⅱ.GrammarFocus.1.ReadthesentencesintheGrammarFocus，andthendothepractice.①拉链是什么时候被发明的？___________thezipper______?②它于1893年被发明。It_______________in1893.③它是由谁发明的？___________itinvented______?④它是由惠特科姆•贾得森发明的。It___________

7、______WhitcombJudson.⑤茶叶什么时候被带到朝鲜去的？___________tea________toKorea?Ⅲ.Grammar一般过去时态的被动语态的构成英语有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。如：Wecleanedtheclassroomyesterday.(主动语态，主语we是clean的执行者)Theclassroomwascleanedyesterday.(被动语态主语theclassroom是承受者)一、一般过去时被动语态一般过去时被动语态的结构为“主语+wa

8、s/were+及物动词的过去分词(+by+动作的执行者).”。如：