高中三年级英语必修4第一课时课件.ppt

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1、The passive Voice一般现在时的被动语态 复习巩固 Read and translate the following sentences.1, Everything is made in China.2, The cup is made of glass.3, Is it made in China?4, What is it made of?5,Where is it made ?6, Its used for drawing pictures.7, Excuse me, is this seat taken?8, I am surprised at the news. 英语的

2、语态是通过动词形式的变化表现出来的。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。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。主动语态表示主语是动作的执行者。 例如：例如：Many people speak Chinese. 谓语：谓语：speak的动作是由主语的动作是由主语many people来执来执行的。行的。 被动语态表示主语是动作的承受者，即行为动作被动语态表示主语是动作的承受者，即行为动作的对象。的对象。 例如：例如：Chinese is spoken by many people.主主语语English是动词是动词sp

3、eak的承受者。的承受者。2. 人称、数和时态的变化是通过人称、数和时态的变化是通过be的变化表的变化表现出来的现出来的。主动语态变被动语态口诀：主动语态变被动语态口诀：宾语提前主语变，宾语提前主语变，原主变宾原主变宾by后见，后见，时态人称时态人称be关键。关键。把下列的句子变为被动语态的句子1、They speak English in Canada .2、My mother often asks me to wash the dishes. 3、They make computers in the USA.4、They grow rice in South China.English i

4、s spoken (by them)in Canada.I am often asked (by my mother) to wash the dishes.Computers are made(by them) in the USA.Rice is grown (by them) in South China.看谁最准确把下列句子变成被动句：把下列句子变成被动句：1. More and more people speak English.2. We plant more trees every year here. 3.Dalian produces big ships. 4.Farmers

5、 grow rice in summer . 5.We clean our classroom every day.English is spoken (by more and more people).More trees are planted (by us)every year here.Big ships are produced in Dalian.Rice is grown(by farmer ) in summer.Our classroom is cleaned (by us) every day.补充强调被动语态的用法： 1、当我们不知道动作的执行者时； A book is

6、stolen. 2、当我们不必提出动作的执行者时； I was born in 1990. 3、当我们强调或侧重的是动作的接受者时。 She is liked by everybody. *4、其它各种时态的被动语态（以后单元中详解） The book was bought yesterday.(一般过去时态的被动语态） 5、动词变过去分词的变化规则。（现在完成时态已学过）1. The girl looks after the old woman well. The old woman by the girl .2. We often keep our classroom clean. Our

7、 classroom us.3. Some people throw waste paper everywhere. Waste paper everywhere. 4.We use all the apples to make salad . All the apples 5.The police catches a thief. A thief the police. is looked after well is kept clean by is thrownAre used to make salad by us is caught by1. English _ (speak) by

8、many people.2. Tea _ (grow) in Southeast China.3. Many trees _ (plant) in North China.4. The brush _ (make) of bamboo and animals hair.5. Confucius(孔子）孔子） _ (know) as a great thinker in China.is spokenis grownare plantedis made is known归纳小结（板书） 主动语态变被动语态的口决。 两种语态的含义：（略） 般现在时态被动语态的句型结构。 被动语态的用法： 1，不知道动作的执行者时。 A book is stolen. 2,不必强调动作的执行者时。（常用于一些固定搭配） be made of/from be made in be used to do sth/ for doing sth be (was /were) born It is/ was said/ reported +that 从句 “据说/ 据报到” HomeworkDo Activity18 in Unit9.( on Page 150)Thank you!Goodbye!