新概念英语第二册第21课 语法：被动语态
表示：人或物被/受/挨……
句子主语是动作的接受者
句式结构：主语 be 过去分词 by sb.（by sb. 有时被省略）
不同时态的谓语被动语态形式
一般现在时
am/is/are done
现在进行时
am/is/are being done
现在完成时
have/has been done
一般过去时
was/were done
一般将来时
will be done
含有情态动词
情态动词 be done
被动语态例句
1. It is called a clavichord.
2. It was made in Germany.
3. Our clavichord is kept in the living room.
4. The instrument was bought by my grandfather many years ago.
5. Recently it was damaged by a visitor.
6. Now we are not allowed to touch it.
7. It is being repaired by a friend of my father’s.
8. Her bag has been stolen.
9. The birthday party will be held next Wednesday.
10. Your watch can be repaired soon.
11. The new car must be tested.
12. The window must have been broken by the naughty boys.
把以下句子变成被动语态，用句中的斜体部分作主语。
1. I will send an email this afternoon.
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2. We must finish our homework every day.
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3. The young boy broke the vase(花瓶)yesterday.
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4. People speak English all over the world.
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5. They have taught French for 10 years in this school.
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