She swam to the shore..句子不明白!

题目

She swam to the shore..句子不明白!
She swam to the shore having spent the night in the water.
请问这是个时间状语从句吗?
having可以替换成那种形式?

答案

having spent the night in the water 是现在分词短语用作状语.根据上下文,既可以理解为时间状语,也可以理解为伴随方式状语；前者说明她向海岸游去的时间,后者补充说明向海岸游去的时候伴随着的行为方式”.
可以作如下改写：
1. 用 and 改写为并列句：
She had spent the night in the water and swam to the shore. 她在海水里已经度过了一个夜晚,接下来向海岸游去.
2. 用 when（= at that time）改写,相当于并列句（从句不可以提到主句前）：
She swam to the shore having,when she had spent the night in the water. 她向海岸游去,此时她在海水里已经度过了一个夜晚.
3.改写为时间状语从句：
After/when she had spent the night in the water,she swam to the shore. 她在海水里已经度过了一个夜晚以后向海岸游去.