过去分词作状语时，通常表示时间，原因，条件，让步等。在使用过去分词作状语时应该注意以下几个难点：
1. 请看例句：
More time given, we would have done it better.
【分析】句子的主语we与given之间不能构成相应的逻辑关系和正确的意义，为了使句意完整，需要在过去分词given前添加其逻辑主语time。句意为：给的时间越充分，我们就做得越好。
【小结】过去分词短语在句中作状语时，其逻辑主语必须是句子的主语。如果主语不一致，需要在分词前面加上逻辑主语。如：
The boy stood there, his hand raised.
那个男孩站在那儿，举着手。
2. 请看例句：
Disappointed that he did not win the contest, Tony decided to give up.
【分析】句中的disappointed与逻辑主语Tony之间并无被动关系，而是说明逻辑主语Tony本身所处的状态。句意为：由于对不能赢得竞赛感到失望，Tony决定放弃。
【小结】并非所有的过去分词都表示被动意义，有些过去分词只表示逻辑主语所处的一种状态。类似用法的短语有be lost in thought, be devoted to, be interested in, be dressed in, be seated, be pleased, be surprised, be filled with等。
如： Interested in this kind of book, he bought two copies at a time.
由于对这种书很感兴趣，他一次买了两本。
3. 请看例句：
Supported by his academic research, Professor Salovey suggests that when predicting someone’s future success, their character, as measured by EQ tests, might actually matter more than their IQ.
【分析】 as measured by EQ tests是as it is measured by EQ tests的省略形式，状语从句中省略了与主句相同的主语their character以及谓语动词is。句意为：萨洛维教授在他学术研究的基础上提出，在预测一个人未来是否成功时，他的性格，即通过情商测验来衡量，也许比他的智商更为重要。
【小结】“从属连词 过去分词”是状语从句的省略形式，也是近几年高考考查的热点。当状语从句的主语与主句的主语一致，且状语从句的谓语动词是被动式时，从句可以转化成“连词 过去分词”形式。可以用于本结构引导状语从句的连词有while / when / as / though / if等。如：
I went on talking, though continually interrupted by George.
我继续讲话，尽管不断被George打断。
[练一练] 每空填一词，使该句与所给句子的意思相同或相近。
1. When he is dressed in a white uniform, he looks more like a cook than a doctor.
_____ _____ a white uniform, he looks more like a cook than a doctor.
2. I won’t go to the party, even if I am invited.
I won’t go to the party, even if _____.
3. After we spent all the money, we started looking for jobs.
All the money _____, we started looking for jobs.
4. The works of Beethoven still attract people all over the world no matter how frequently they are performed.
No matter _____ frequently _____, the works of Beethoven still attract people all over the world.
5. He had no time to care about his family because he devoted himself to his research work.
_____ _____ _____ his research work, he had no time to care about his family.
Key:
1. Dressed in 2. invited 3. spent 4. how; performed
5. Devoted himself to
