《Revision --Passive voice》教案7-九年级全一册英语【人教新目标版】

Revision   --Passive voice

教学目标：

知识与技能：复习动词的被动语态

过程与方法：通过学生归纳总结练习达到知识的运用提高

情态价值观：注重学习方法指导及应用能力的提高。

教学重点：动词的被动语态

教学难点：被动语态实际应用。

教学过程

一、课程导入：

与小学语文课本中变“把”字句为“被”字句做类比

二、知识梳理

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。

被动语态结构：be + 过去分词(PP) + (by …)

时态：

1. 一般现在时：am/is/are + pp

2.一般过去时：was (were) + pp

3. 现在完成时：have/has been +pp

4.一般将来时：will (shall) /be going to + be + pp

5.情态动词的被动语态：must (can, have to, may等) + be + pp

三、知识运用

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.

在改写中应注意：

1.把原来的宾语提到前面作被动语态的主语;

2.把动词变成“be + 过去分词”;

3.主动语态中的主语变为介词by的宾语。

4.遵循时态不变的原则

一般现在时的被动语态：

am/is/are + 过去分词

1. People play football all over the world.

2. Mr. Green teaches us this term.

Football                                         all overthe world.

We                                              this term.

一般过去时的被动语态：

was/were + 过去分词

3. People built the Great Wall long ago.

4. Two years ago we used the machines

to make shoes for children.

现在完成时的被动语态：

have/has been + 过去分词

5. People have planted many trees since March.

   Many trees ____________________ by people since March.

6. Mary hasn’t prepared for the exam yet.

    The exam ________________________ by Mary yet.

一般将来时的被动语态：

will / be going to + be + 过去分词

7. We will write a diary next class.

8. Tom is going to hold a birthday party.

情态动词的被动语态：

must/have to/can等 + be + 过去分词

9. You must throw the broken glass away at once.

10. We have to finish our homework on time.

四、知　识　拓   展

思考1：将下列的主动句变为被动语态：

1. We gave him some books.

→He ____________________________.

→Some books_______________________ .

2. My mother buys a present for us.

→A present___________________________.

小      结     1：

带有双宾语（宾语既有人又有物）的被动结构是:

（1）将间接宾语(人)变为主语，直接宾语(物)不变。

（2）将直接宾语(物)变为主语，一般要在间接宾语前加介词to或for.

思  考  2：

1.I usually hear her sing English songs in the morning.

  She_______________________________                                                                                   in the morning.

2. He makes her horse work all day.

      Her horse ___________________all day.

3. My father let me go out for a picnic.

      I                                out for a picnic.

小  结  2：

一些特殊结构的被动结构:

（1）感觉动词(hear, see等)改被动语态

（2）使役动词(let, make等)改被动语态

如动词为 make, see, hear, watch 等，后接宾语补足语为不带“to”不定式时，变被动语态时要加上“to”  。如：

      I saw him fall off the tree.

  →He was seen to fall off the tree.

思考3: 用动词适当形式填空。

1. This kind of pen _______(write) very smoothly.
2. Mooncakes ________(taste) delicious.
3. This book is worth______(read).
4. My bike needs _______(repair).

小 结 3：

主动结构表示被动意义：

1. write, read, sell, wash等词作不及物动词时，它们的主语为物，可用主动语态表示被动意义。

2. look, sound, taste, smell等系动词，用主动结构表示被动意义。

3. 在be worth doing 中，doing 表示被动意义。

4. need doing 相当于need to be done.

五、当堂小测试

请把下面句子改为被动语态

1. They showed Jack carefully how to use it.

→_________________________________________________

 2. Beijing will hold the 29th Olympic Games in 2008.

→_________________________________________________

3. Miss Deng teaches us English.

→                                                                 .

→                                                                 .

4.We should make our country become more and more beautiful.

→_________________________________________________

5. Have you watered the flowers?

   —————————————————--—？

请把下面句子改为被动语态

1. They showed Jack carefully how to use it.

→_________________________________________________

2. Beijing will hold the 29th Olympic Games in 2008.

→_____________________________________________________

3. Miss Deng teaches us English.

→                                                                 .

→                                                                 .

4.We should make our country become more and more beautiful.

→__________________________________________________________

5. Have you watered the flowers?

   —————————————————--—？

六、家庭作业

•        复习本课所学知识；

•        归纳要点，做好复习笔记；

•        完成本课的课时练习。