3. 及物动词的过去分词还可用来表示被动， 但也有少数动词（如fall, escape, boil等）的过去分词作定语时，只表示完成。例如：
the man spoken to（别人与之讲话的那个人）
boiled water（开过的水，表完成）
〖思维〗二、过去分词作状语
1.过去分词可用来作时间、原因、条件、让步、方式或伴随情况的状语。
1)表时间。例如：
(Heated), the metal expands .这种金属加热后会膨胀。
(Asked) why he did it, he said it was his duty .
2)表原因。例如：
(Born in the village), he knows a lot of people there .
3)表条件。例如：
(United), we stand; (divided), we fail .团结则存，分裂则亡。
(Given more time), I can do it better .
4)表让步。
Although (exhausted) after a long journey, he continued to work .
5)表方式或伴随情况。例如：
The professor stood there (surrounded) by many students .
〖思维〗三、尤其需要注意的是：过去分词无论作什么状语，其逻辑主语应是主句的主语。
1.【误】Seen from the mountain, we found the building is very small .
【正】Seen from the mountain, the building is very small .
2.【误】Written carelessly, he made a serious mistake in the letter .
【正】Written carelessly, the letter had a serious mistake .
【动脑动手】
单元能力立体检测
一、过去分词精练
1. The programs ____ (put) on yesterday evening were really wonderful.
2. ____ (send) to the hospital immediately, the wounded soldier was saved.
3. You\'d better not get the plastic bags and boxes ____ (burn), for it will give off some harmful gas and pollutants into the air.
4. The firefighters are trying their best to rescue all the people ____ (trap) in the fire.
5. ____ (encourage) by the teacher\'s words, the boy was determined to work harder and make greater progress.
6. The little girl was very ____ (frighten) at a frightening voice.
7. They found the house ____ (break) into and rang up the police at once.
8. The bridge that was ____ (build) twenty years ago needs repairing.
9. If ____ (give) more time, we could do it better.
10. ____ (excite) at the good news, he could not go to sleep.
11. The manager had every room ____ (examine) carefully.
12. Unless ____ (invite), I won\'t go to the ball tomorrow.
高二英语第十五单元A famous detective（著名侦探）由www.yf1234.com收集及整理,转载请说明出处www.yf1234.com
www.yf1234.com 13. ____ (destroy) in the earthquake, the equipment doesn\'t work.
14. ____ (absorb) in the research work, he had no time to make any trip.
15. In the paper is a carefully ____ (decide) policy.
16. The first film ____ (direct) by her was very popular with the public.
17. The students have cleared away the ____ (fall) leaves.
18. I saw a lot of banners ____ (hang) from public buildings.
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高二英语第十五单元A famous detective（著名侦探）