现在分词与过去分词的用法having been bitten twice by snakes before,the litter girl was afriad to across the grass alone .Attracted by the beauty of mount tai ,the two atudent determined to spend three more days there.这两个句子为什么一个用过去分词一个用现在分词呢

问题描述:

现在分词与过去分词的用法
having been bitten twice by snakes before,the litter girl was afriad to across the grass alone .
Attracted by the beauty of mount tai ,the two atudent determined to spend three more days there.
这两个句子为什么一个用过去分词一个用现在分词呢

之前的女孩被蛇咬过两次后,独自在草地上怕被惊醒,两个atudent 泰山的魅力所吸引,下定决心,在那里多待三天.

一个是回忆故事,用过去分词.一个是描述现在,用现在分词