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1、 复习被动语态（Passive voice）教学目标知识与能力：掌握主动语态与被动语态互变，被动语态的时态及用法。过程与方法：通过比较，讲解，训练使学生学会运用被动语态。情感价值观：通过学习学会变被动学习为主动学习。教学重点：被动语态的基本用法。教学难点：主动语态、被动语态互变，被动语态的时态及用法。教学方法：讲练结合法、比较法。教学准备：多媒体课件。教学步骤Step1:语态概述英语的语态是通过动词形式的变化表现出来的。英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：Many people speak English.谓语：speak的动
2、作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。例如：English is spoken by many people.主语English是动词speak的承受者。主动态和被动态指的是动词形式，是词法概念；而主动句和被动句则指的是句子结构，从而是句法概念。所谓主动句就是由主动态动词(词组)作谓语动词的句子，而被动句则是由被动态动词(词组)作谓语动词的句子。例如：He opened the door.他开了门。(主动句)The door was opened.门被开了。(被动句)Step2: 通过观察，归纳总结被动语态被动语
3、态由“助动词be及物动词的过去分词”构成。人称、数和时态的变化是通过be的变化表现出来的。现以teach为例说明被动语态在各种时态中的构成。 一般现在时：amisaretaught 一般过去时：wasweretaught 一般将来时：willshall betaught 现在进行时：amisare beingtaught 过去进行时：havehas beentaught 现在完成时：havehas beentaught 过去完成时: had beentaughtStep3: 观察下列句子，并归纳被动语态的用法一般现在时； The song is called Dont forget me. 歌
4、曲的名字叫“勿忘我”。He is often asked to do this work他常常被派做这件工作。一般过去时:These new cars were made in Tianjin in 2003.这些新车是2003年在天津生产的。一般将来时:Many believe that one day the earth will be destroyed if people do not learn to live in peace .许多人相信，如果人类不能学会和平相处，地球总有一天要被毁掉。现在进行时:A new railway is being built.一条新铁路正在修建。过去
5、进行时:The road were being widened.路那时正在加宽现在完成时:He has been sent to work in Shanghai .他已经被派往上海工作了过去完成时A new hotel had been built when I got there .我到那时，一座新旅馆已经建好了。过去将来时:My neighbour said a new hotel would be built in six months.我的邻居说六个月后新旅馆将会建好的。Step4: 主动语态转换为被动语态的步骤The naughty boy broke the window yes
6、terday原主动句中的宾语the window变为主语。谓语动词break改为被动形式：be + 过去分词原主动句中的主语放在介词by的后面。其他成分不变Step5: 被动语态的几种类型1.有一个宾语的句子的被动语态He wrote this poem yesterday.This poem was written by him yesterday.Thousands of tourists will visit Kunming this year. Kunming will be visited by thousands of tourists this year.2.有两个宾语的句子的被
7、动语态He lent me a bike.A bike was lent to me by him.I was lent a bike by him.3.含有宾语补足语的句子的被动语态We call him Windy.He is called Windy by us .They will make the city more beautiful .The city will be made more beautiful by them.Children saw the balloons raising.The balloons were seen raising He saw a thief
8、 steal something from the room.A thief was seen to steal something from the room by him （所有带不定式宾语补足语的动词，在变为被动语态时，不定式前都要加to,特别是感官动词（see, watch, look at, Observe listen to , hear,feel）和使役动词（make , have）在主动语态的句子中宾语补足语前省略to,在变为被动 语态时主语补语前一律加To)4.由“不及物动词+介词或副词”构成的被动语态：一般情况下，只有及物动词的后面才能跟宾语，而不及物动词后面不能跟宾语，所
9、以只有及物动词有被动语态，不及物动词则没有被动语态。但有些不及物动词后面跟上介词或副词后，变成一个动词短语，这个动词相当于一个及物动词，那它就可以形成被动语态了,动词短语的被动语态也应保证其完整性Lily looked after the baby.The baby was looked after by Lily.5.由情态动词构成的被动语态：肯定句:主语+情态动词+ be（be永远是原形）+ 过去分词.否定句：主语+情态动词+not+ be（be永远是原形）+ 过去分词.疑问句：情态动词+主语+be（be永远是原形）+ 过去分词?Step6: 被动语态的注意事项适合被动语态的情况(1)不知道或没有必要说明动作的执行者是谁(2)强调动作的承受者，而不强调动作的执行者。Step7:drill见ppt
