having done 和 doing在独立主格结构中的区别

题目

having done 和 doing在独立主格结构中的区别
The storm ___their house,they had to live in a cave.
a.having destroyed b.destroying
独立主格结构中,这两个都表主动,怎么区分?

答案

A
这是独立主格结构作原因状语的.等于=As the storm had destroyed their house.
从下文“他们只有住进山洞” 可见：他们的房子已经被毁了.A 表完成,B 表进行