There are some people lying on the beach.

问题描述:

There are some people lying on the beach.
答案说lying 是现在分词作伴随状语
什么伴随什么.

有些人躺在海滩上.
lying是现在分词,表主动关系.主语是人,人躺在海滩上是主动的,用现在分词.如果是被动用过去分词