英语人教版九年级全册When was it invented SectionA.pptx

Unit9,Period1,Whenwasitinvented?,fourgreatinventions,compass,gunpowder,printing,Papermaking,A:Whenwastheinvented?B:Itwasinventedin_.,1976,1927,1876,1885,1971,lightbulb1879,Edison.,Whenwasitinvented?,Itwasinventedin1879.,Whowasitinventedby?,ItwasinventedbyEdison.,Whatsitusedfor?,Itsusedforhelpingpeopleseeinthedark.,Car1885,Whenwasitinvented?,Whowasitinventedby?,Whatisitusedfor?,Benz.,Itwasinventedin1885.,Itisusedfortraveling.,ItwasinventedbyBenz.,1876,Bell,1927,Beld,Kelif,1971,1976,Fen.Noyma,Whenwasitinvented?,Whowasitinventedby?,Whatisitusedfor?,A:Look!Thislookssointeresting!B:Ah,itsagreatinventionofChina.A:Really?When_it_?B:Ithinkit_inHanDynasty.(汉朝)A:What_it_for?B:Guess!A:_it_forholdingwater?B:No.It_fortestingearthquakes.A:Wow,itsreallyamazing!,was,invented,was,invented,is,used,Is,used,is,used,Thepassivevoice.,被动语态,被动语态的用法:,不知动作执行者时,常用被动语态.eg.Mybikewasstolenyesterday.ThiscarismadeinAmerican.2.不必要说出动作执行者时,常用.eg.Romewasnotbuiltinaday.3.为了突出强调动作的承受者时,常用被动语态.eg.Thousandsofbeachesarepolluted(污染).,Thepassivevoice.,被动语态,主动语态变被动语态的结构图:,Bellinventedthetelephonein1876.ThetelephonewasinventedbyBellin1876.,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,Thepassivevoice.,被动语态,主动语态变为被动语态的步骤:,把原主动句中的动作的承受着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,句式也不能变.,Thepassivevoice.,被动语态,主动语态改被动语态:,Bell,invented,thetelephone,in1876.,was,by,把下列的句子变为被动语态的句子：1、TheyspeakEnglishinCanada.2、Peopleusedwoodformakingtables.3、TheymakecomputersintheUSA.,EnglishisspokeninCanada(bythem).,Woodwasusedformakingtables.,ComputersaremadeintheUSA.,4、TheygrowriceinSouthChina.5.Weplantedmoretreesthisyear.6.Icleanedourclassroomthismorning.,Moretreeswereplantedthisyear.,Ourclassroomiscleanedthismorning.,RiceisgrowninSouthChina.,各种时态的被动语态的构成：,1.一般现在时态am,is,are+过去分词2.一般过去时态was,were+过去分词,1.电话是什么时候发明的？Whenthetelephone?我认为它是1876年发明的。Ithinkin1876.2.他们是用来做什么的？Whatthey?他们是用来在黑暗中看东西的。Theyreinthedark.3.他们是被谁发明的？Whowerethey?,1.Whosthelittlebabyinthephoto,LiYing？-It”sme.Thisphotofourteenyearsago.istakenBtookCtakesDwastaken2.Manyaccidentsbycarelessdriverslastyear.AarecausedBwerecausedChavecausedDwillcause3.AnofficialbyreportersonfoodproblemsinShanghaiyesterday.A.isinterviewingBisinterviewedC.WasinterviewingDwasinterviewed,3.Thetelephone(use)forcallingsomebody.4.Personalcomputers(see)inmanyfamiliesnow.5.English(speak)themostwidelyintheworld.6.Thismachineisusedfor(make)camps.,一、无to不定式,一感二听三让四看,feel,listento.hear,let.have.make,watch.see.lookat.notice,变为被动时加上to,eg.Weoftenseehimplaybasketball.,Heisoftenseentoplaybasketballbyus.,Thebossmadethechildrenworkforlong.,Thechildr