现在分词作状语：
①现在分词doing所代表的动作或状态与谓语动词是同时或几乎是同时发生的，可以作时间、原因、方式、条件、结果、目的、让步、伴随等状语。分词的逻辑主语就是句子的主语。如：
Rushing out of the house, he was knocked down by a car.
他一冲出屋子就被一辆车撞倒了。
My cousin went to Shenzhen, hoping to find a job there.
我表兄去深圳了，希望在那儿找份工作。
The child fell，striking his head against the door.
小孩摔了一跤，头在门上碰了一下。
In the last few years, the country has had a hard time, suffering several killer quakes. 过去几年里，这个国家经历了艰难的时期，遭受了几次致命的地震。
Being spring, the flowers are in full bloom.
因为是春天，所以花都盛开着。
②有些分词作状语，没有逻辑上的主语，已成为习惯用法：considering, judging from, talking of, allowing for(考虑到), generally/frankly/honestly/roughly/strictly speaking, assuming that(假设)等。如：
Talking of this film, its wonderful.
说到这部电影，好极了。
Assuming that it is true, what should we do now
假定那是真的, 我们现在该怎麽办
Judging by the direction of the wind, it wont rain today.
根据风向测度, 今天不会下雨。
Social psychology, strictly speaking, deals with the behavior of people in groups. 严格地说, 社会心理学研究人们的群体行为。
