八年级英语下册 Unit 7 International Charities被动语态课件 （新版）牛津版.ppt

u7internationalcharities grammarpassivevoice 学习目标 1 会区分主动语态和被动语态 2 会写出一般现在时态和一般过去时态的被动语态 3 会用上述两种时态的被动语态描述动作和事件 英语动词有两种语态 主动语态 theactivevoice 被动语态 thepassivevoice a 主动语态表示主语是动作的执行者 b 被动语态表示主语是动作的承受者 weplantedthetree thetreewasplantedbyus whichisthepassivevoice a whatisusedtobeatrainingcentreinorbis b moremoneywasneededforcharity c wesendnewbookstopoorchildren d localpeoplewereusedtowearingpoorclothes e toysandcdsaresoldtoraisemoney f volunteerscollectedwarmclothesforthepoor g thousandsofpeoplejointhecharityshow h mostcasescanbepreventedorcured a b e h 1 当我们不知道谁是动作的执行者 或没有必要指出谁是动作的执行者时 2 当我们需要强调动作承受者 而不是动作的执行者 这本词典被保存完好 不需要说明是谁保存的 这些恐龙蛋是在二十世纪二十年代发现的 强调恐龙蛋被发现而不是强调由谁发现 thedictionaryiswellkept thesedinosaureggswerefoundinthe1920s footballisplayedbypeopleallovertheworld camerasareusedbythemfortakingphotos abankwasrobbedyesterday man madesatellitesweresentupintospacelastyear lookandfindoutthesimilarities 相同点 thestructureis 助动词be 及物动词的过去分词 be v p p a acharityshowisheldinourtown in2013 b manydoctorsareinvitedtoourhospital lastyear c oneofthecharityprojectswascalledprojecthope now changethetense acharityshowwasheldinourtownin2013 manydoctorswereinvitedtoourhospitallastyear oneofthecharityprojectsiscalledprojecthopenow whataboutitsstrctureinsimplepresentandpasttenses 常用时态形式 1 一般现在时 thissweaterisusedforkeepingwarm youarewantedonthephone thegreatwallisvisitedbymanyforeignerseveryyear am is are 及物动词的过去分词 2 一般过去时 asportsmeetingwasheldinourschoollastweek thefactorywasbuilttheyearbeforelast werethesetvsetsmadeinshanghai 及物动词的过去分词 was were 主动语态转化为被动语态的三部曲 1 主动结构宾语变为被动结构主语 2 谓语动词变为被动语态 3 主动结构主语变为介词by的宾语 组成介词短语 放在被动结构中谓语动词之后 在动词执行者无须说明或强调时 by短语可以省略 nancydesignedtheeducationalcd rom 主语 谓语 宾语 theeducationalcd rom wasdesigned bynancy 将下列主动语态改为被动语态句子 thecomputerclubheldawritingcompetition thefastestplayercanfinishthegameineighthours wetookmanyphotos theelephantsdidalotoftricks thegovernmentbuiltaparkforthem awritingcompetitionwasheldbythecomputerclub thegamecanbefinishedbythefastestplayerineighthours manyphotosweretakenbyus alotoftricksweredonebytheelephants aparkwasbuiltforthembythegovernment 连句 a yesterdayafternoon give me bymyteacher thebookb bythefastest runnerthegame finish inanhour everyyearc beautifulphotos atthetopofthemountain inourlasttrip take thebookwasgiventomebymyteacheryesterday thegameisfinishedbythefastestrunnerinanhoureveryyear beautifulphotosweretakenatthetopofthemountaininourlasttrip moreexercises 一 选择正确答案 1 doyouknowwhat a itcallsb doesitcallc itiscalledd isitcalled2 mylostcar yesterday a willbefoundb wasfoundc hasfoundd found3 whowasthebook a writtenbyb willbewritebyc hasbeenwrittenwithd canbewrittenby4 anenglishsong ontheradio a willteachb willbetaughtc hastaughtd canbeteach5 mustthecomposition inanhour a willbefinishedb hasbeenfinishedc isfinishedd befinished c b a b d 二 用所给词的正确形式填空 cover spell answer write return call connect 1 allthequestionsmustcorrectly 2 morethantwothirdsoftheearth withwater 3 ourcitychangzhou 4 allthemagazinesshould totheschoollibraryintwoweeks 5 thisenglishwordcan inadifferentways 6 allthewordsonthebackofthecard 7 makesurethekeyboardtothecomputerproperly bekept iscovered bereturned bespelt beanswered