1. 英语动词有两种语态：主动语态和被动语态。 1. 当我们不知道谁是动作的执行者, 2. 或者只需强调动作的承受者时，要用被动语态。 时态： 1. 一般现在时： 2. 一般过去时： 3. 一般将来时： 4. 情态动词的被动语态： 被动语态结构： ■ ■ ■ be + 过去分词 (PP) + (by …) am/is/are + pp was (were) + pp will (shall) /be going to + be + pp must (can, may 等 ) + be + pp

2. 在改写中应注意： 原宾语主语 ; 1. 把原来的宾语提到前面作被动语态的主语 ; be + 过去分词 2. 把动词变成 “be + 过去分词 ”; 主语 by 宾语。 3. 主动语态中的主语变为介词 by 的宾语。 典型题例 例 1 将下列句子改为被动语态。 We clean our classroom every day. Our classroom is cleaned (by us) every day.

3. 一般现在时的被动语态： 过去分词 am/are/is + 过去分词 1. People play football all over the world. 2. Mr. Green teaches us this term. Football all over the world. We this term. is played by people are taught (by Mr. Green)

4. 一般过去时的被动语态： 过去分词 was/were + 过去分词 4. People built the Great Wall long ago. 5. Two years ago we used the machines to make shoes for children. The Great Wall long ago. Two years ago those machines shoes for children. was built (by people) were used (by us) to make

5. 一般将来时的被动语态： 过去分词 will / be going to + be + 过去分词 6. We will write a diary next class. 7. Tom is going to hold a birthday party. A diary next class. A birthday party. will be written (by us) is going to held by Tom

6. 情态动词的被动语态： 过去分词 must/have to/can 等 + be + 过去分词 8. You must throw the broken pottery away at once. 9. We have to finish our homework on time. The broken pottery at once. Our homework. must be thrown away (by you) has to be finished (by us) on time

7. 思考 1 ：将下列的主动句变为被动语态： 10 ． We gave him some books. →He. →Some books. was given some books (by us) to were given to him (by us)

8. 思 考 2 ： 12 ． I usually hear her sing English songs in the morning. She in the morning. to is usually heard to sing English songs

9. 14 ． He makes her horse work all day. Her horse all day. 15. My father let me go out for a picnic. I out for a picnic. to is made to work to was let to go

10. 知 识 运 用 一、单项选择： 1. Only thirty-eight ideas by the newspaper. A. choose B. chose C. was chosen D. were chosen 2. As usual, Meihua at 6:30 this morning by her mother to get ready for school. （ 2006 ） A. has woken up B. woke up C. wakes up D. was woken up D D

11. 3 ． A neighbour helped to keep our dog. It while we were on holiday. (2005) A. was taken care B. took care of C. is taken care of D. was taken care of 4. At the end of the meeting Miss Green two minutes to decide whether she should join the project or not. (2004) A.gave B. had given C. was given D. was giving D B

12. 5. Mr. Johnson’s story by everyone who heard it.(2003) A. laughed at B. was laughed C. laughed D. was laughed at D

13. 二、请把下面句子改为被动语态 1. They showed Jack carefully how to use it. →Jack carefully how to use it. 2. Beijing will hold the 29 th Olympic Games in 2008. →The 29 th Olympic Games in 2008. was showed will be held by Beijing

14. 3. Miss Deng teaches us English. →. 4. They saw the boy playing basketball at 3:00 yesterday. →The boy _________________ at 3:00 yesterday. We are taught English by Miss Deng to was seen to play basketball to English is taught to us by Miss Deng

15. 5. We should make our country become more and more beautiful. → Our country more and more beautiful. to should be made to become