九年级第六单元1课时龚泽花.ppt

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1、Welcome!ShuheMiddleSchoolGongZehuaChineseinventions创设情景，目标领航Voices:TheActiveandPassiveVoicesActiveVoice主动语态表示主语是动作的执行者PassiveVoice被动语态表示主语是动作的承受.如:1.ManypeoplespeakEnglish.Englishisspoken(bymanypeople).2.Wemustdosomethingtostopthepollution.Somethingmustbedonetost

2、opthepollution(byus).ThePassiveVoice（被动语态）Conclusion:情态动词——aux.v.(must／can／could／may…)+be+v.p.p.被动语态的构成：be+vt.p.p.方式时间一般进行完成现在amis+pp.areamisbeing+pp.arehasbeen+pp.have过去was+pp.werewasbeing+pp.werehadbeen+pp.将来shallbe+pp.willshallhavebeen+ppwill过去将来shouldbe+pp.wo

3、uldshouldhavebeen+ppwould被动语态的用法:不知动作执行者时,常用被动语态.eg.Mybikewasstolenyesterday.2.不必要说出动作执行者时,常用被动语态.eg.Romewasnotbuiltinaday.3.为了突出强调动作的承受者时,常用被动语态.eg.Thousandsofbeachesarepolluted.主动语态变被动语态的结构图:Bellinventedthetelephonein1876.主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语Thetele

4、phonewasinventedin1876Bellby.Hisbrotherwashesbowlseveryday.主谓宾(受动者)Bowlsarewashedbyhisbrothereveryday.主动语态变为被动语态的步骤:把原主动句中的宾语转换为被动语态的主语.2.把动词改为被动形式,即“be+过去分词”.注意be动词要按新的主语的人称和数进行变化,时态要和原来的主动语态的时态保持一致.3.原来主动语态句中的主语,如果需要,就放在by后面以它的宾格形式出现.如果没有必要就可以省略.其他的成分(定语,状语)不变,

5、句式也不能变.Whenwasitinvented?SectionAPeriod1Unit6Talkaboutthehistoryofinventions.Thepassivevoice.LanguageGoals:GrammarFocus:将下列句子变为被动语态：1.Theycleantheirclassroomeveryday.2.IrepairJenny’sbicycleeverySunday.3.Thisfarmergrewbeautifulflowerslastyear.4.Thestudentsshoulddo

6、theirhomeworkeveryday.5.Tomoftenplaysbasketballontheplayground.Theirclassroomiscleanedbythemeveryday.Jenny’sbicycleisrepaired(byme)everySunday.Beautifulflowersweregrownbythisfarmerlastyear.Theirhomeworkshouldbedonebythestudentseveyday.BasketballisoftenplayedbyTom

7、ontheplayground.6.Childrenoftensingthissong.Thesongisoftensungbychildren.问题诱导自学展示1aPAIRWORK18761885197119271cPAIRWORKA:Whenwasthetelephoneinvented?B:Ithinkitwasinventedin1876.A:Whatisitusedfor?B:Itisusedfor…合作探究，反馈交流1bListenandmatchtheinventionswiththedates.abd18

8、76188519271971dabc当堂训练，迁移应用2aListenandnumbertheinventionsintheorderthatyouhear.3121.Peopleuseknivesforcuttingthings.Knives____________forcuttingthings.2.Thestu