英语人教版九年级全册Unit6 Section A 1a-1c.ppt

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1、Talkabouttheinventions(发明).Whichonedoyouthinkisthemosthelpfulinourdailylife?carTVmobilephonecameraclockTheyaresomeinventions.Doyouknowwhentheywereinvented?computerUnit6Whenwasitinvented?SectionA(1a-1c)安徽省阜南县龙王乡中心学校李艳芳Presentation1aLookatthethingsbelow.Inwhatorderdoyouthinkthey

2、wereinvented?Discussthemwithyourgroup.Thennumberthem[1-4](1=first,4=last)12341bListenandmatchtheinventionswiththeyears.abcdWhenwasthe...invented?1876188519271971acbdcomputerTVA:Ithinkthe…wasinventedbeforethe….B:Idisagree.(Iagree.)Ithinkthe…wasinventedafterthe….carclockA:Ithink

3、the…wasinventedbeforethe….B:Idisagree.(Iagree.)Ithinkthe…wasinventedafterthe….1675laptopcameraA:Ithinkthe…wasinventedbeforethe….B:Ithinkso.(Idon’tthinkso.)Ithinkthe…wasinventedafterthe….18391982telephonemobilephoneA:Ithinkthe…wasinventedbeforethe….B:Ithinkso.(Idon’tthinkso.)It

4、hinkthe…wasinventedafterthe….19731cPairworkA:Whenwasthe…invented?B:Ithinkitwasinventedin….computer1971car1885TV1927telephone1876A:Whenwasthe_______invented?B:Ithinkitwasinventedin______.Pairwork(1c:P68)19711885187619271971calculatorThesimplepastpassivevoice一般过去时被动语态一般过去时被动语态表示

5、过去经常性、习惯性被动动作或过去某一时刻发生的被动性动作，与主动语态相比,被动语态中主语是谓语动作的执行者。被动语态的构成:主语+助动词was/were+(及物动词的)过去分词was(were)+done(P.P.)Grammar主动语态变被动语态的方法动作执行者+动词主动形式+动作承受者动作承受者+谓语动词被动形式+by执行者Bellinventedthetelephonein1876.ThetelephonewasinventedbyBellin1876.主动语态变被动语态的结构图:主语谓语动词过去式宾语时间状语主语谓语动词的过去分词宾语时间状

6、语写出动词的过去式和过去分词1.show____________________2.shut____________________3.sing____________________4.sit____________________5.sleep____________________6.smell____________________7.speak____________________8.spell____________________showedshownshutshutsangsungsatsatsleptsleptsmelt/sme

7、lledsmelt/smelledspokespokenspelt/spelledspelt/spelled9.work_____________________10.invent____________________11.land___________________12.play____________________13.stop____________________14.shop____________________15.divide____________________16.complete____________________

8、17.study__________________workedworkedinventedinventedlandedp