Question

英语非谓语动词什么时候需要用独立主格形式

Answer 1

独立主格结构主要用于描绘性文字中，其作用相当于一个状语从句，常用来表示时间、原因、条件、行为方式或伴随情况等。例如：

1) 表示时间The meeting being over, all of us went home. 开完会后我们都回家了。the meeting being over相当于when the meeting was overHer work done, she sat down for a cup of tea. 她干完了活，坐下来喝茶。her work done相当于when her work was done2） 表示条件The condition being favorable, he may succeed. 若条件有利，他或许能成功。the condition being favorable相当于If the condition is favorable3） 表示原因There being no taxis, we had to walk. 没有出租车，我们只好步行。There being no taxis相当于Since there was no taxis,He wrapped her up with great care, the night being dark and frosty. 夜又黑又冷，所以他把她裹得严严实实的。as the night was dark and frosty4） 表示伴随情况Almost all metals are good conductors, silver being the best of all. 几乎所有的金属都是良导体，而银则是最好的导体。(=Almost all metals are good conductors,and silver is the best of all.)5） 表示补充说明We redoubled our efforts, each man working like two. 我们加倍努力，一个人干两个人的活。