一般过去时被动语态38641ppt课件

.,Welcome！,.,ThePassiveVoice,madebyAchilles（Mr.Peng）,.,Grammar,ThePassiveVoice被动语态,主动语态与被动语态：英语中有两种语态，即主动语态(TheActiveVoice)与被动语态（ThePassiveVoice)。主动语态表示主语是动作的执行者；被动语态表示主语是动作的承受者。例如：,TheymaketrainsinZhuzhou.（主动语态）TrainsaremadeinZhuzhou.（被动语态）,.,一般现在时的被动语态构成：am/is/are+动词的过去分词,主动语态变被动语态的步骤：1.主动语态的宾语变为被动语态的主语；2.主动句的谓语动词变为被动结构；3.主动句的主语变为被动句的宾语，由by引出，当不强调动作的执行者时，常省略。例如：,ManypeoplespeakEnglish.,English,isspoken,by,manypeople.,.,将下列的句子改为被动语态。1.TheyspeakEnglishinCanada.2.Peopleusewoodformakingtables.3.TheymakecomputersintheUSA.4.TheygrowriceinSouthChina.,EnglishisspokeninCanada.,Woodisusedformakingtables.,ComputersaremadeintheUSA.,RiceisgrowninSouthChina.,.,Teachingaims:,1、了解并掌握一般过去时被动语态的肯定句、否定句以及一般疑问句的结构2、能从主动语态变为被动语态3、能熟练运用一般现在时和一般过时的被动语态,.,自学任务（课本134-135）一般过去时被动语态的三种句式结构,.,一般过去时被动语态的三种句式结构,肯定句：主语+was/were+动词的过去分词（+by+动作执行者）否定句：主语+was/were+not+动词的过去分词（+by+动作执行者）一般疑问句：Was/Were+主语+动词的过去分词（+by+动作执行者）,.,2.Iboughtacomputerlastterm,Acomputerwasbought(byme)lastterm.,.,Thelightwasinventedbyhim.,invent,Heinventedthelight.,.,Jimrodethemotorbiketohisfactoryyesterday.,Themotorbikewasriddentohisfactoryyesterday.,.,Theyhadaneveningpartylastweek.,Aneveningpartywashadlastweek.,.,TheGreatWallwasbuiltbyChinesepeoplemanyyearsago.,ChinesepeoplebuilttheGreatWallmanyyearsago.,.,Thestudentsplantedmanytreesyesterday.,Manytreeswereplantedbythestudentsyesterday.,.,1.Peopleuseknivesforcuttingthings.Knives_forcuttingthings.2.Thestudentscleanthewindowsoftheirclassroomtwiceamonth.Thewindowsoftheirclassroom_twiceamonth.,areused,are,cleaned,(变被动语态）,七嘴八舌,.,3.Ifoundtheticketonthefloor._onthefloor.4.Itoldhertoreturnthebookintime.She_toreturnthebookintime.,Theticketwasfound,wastold,3.Wefoundtheticketonthefloor.,.,5.Lastyearwebuiltalibraryinourschool.Alibrary_inourschoollastyear.,wasbuilt,.,6.Didyouplantmanytreesatthistimelastyear?_atthistimelasttime?,Weremanytreesplanted,.,7.TheteacheraskedTomtoturnonthecomputer.Tom_toturnonthecomputer.8.Inthisfactorywomendomostofthework.Mostofthework_bywomeninthisfactory.,wasasked,isdone,.,Haveatry,1.Sheinventedteabyaccident.2.Theydontwashtheirclotheseveryday.3.Theboybrokethedooroftheclass.,Teawasinventedbyherbyaccident.,Theirclothesarentwashedbythemeveryday.,Thedooroftheclasswasbrokenbytheboy.,.,4.Wedidntsolvetheproblem.5.DidMaryfinishthework?,Theproblemwasntsolvedbyus.,WastheworkfinishedbyMary?,.,Fillintheblanks:Paper(invent)_inA.D.105byCaiLuninChina.Itisanimportantpartofoureverydaylives,butfewpeopleeverthinkabouthowit(make)_.Todaymostpapercomesfromtrees.However,withtheconcernfortheenvironment(考虑到环境),moreandmorepaper(produce)_fromrecycledpaperproducts.Sincepaperproductsareofdifferentqualities,