having spend the night in the water

问题描述:

having spend the night in the water
能否作为独立的一句话.因为我不能理解非谓语动词

不能.非谓语动词除了不能独立作谓语外,可以承担句子的其他成分.
如充当主语:
Having spend the night in the water made me happy.