1. 充当句子的状语。

2. 有自己的主语，同句子的主语不一致。

3. 名词(代词，形容词，副词，介词)+ 分词

4.　With + 名词 (代词) + 分词 (形容词)

例：a) It being raining, I decided to stay at home.

b) Speech having been delivered, discussion started.

c) he entered the room, with his hands open(holding a rifle).

真题剖析

(1995) 45 cliffs no longer crumbling, the beaches are　 46　 of the material which would　47　feed them.

45. A. For

B. As

C. With

D. Because