过去分词done，表被动、表过去，示例：this is book written by somebody，现在分词doing，表现在、表主动，示例：he is a boylying under the tree。

过去分词更好的叫法应该叫过去被动分词，现在分词更好的叫法叫现在主动分词，过去分词done。现在分词doing 。this is book written by somebody，书跟写是被动，书跟写是过去已经写，所以我说这是谁谁谁写的书？这是过去分词。This is a book written by somebody,过去分词表被动表过去。

现在分词doing。he is a boy lying under the tree。男孩跟躺。主动躺。男孩跟躺。现在躺，所以， he is a boy lying under the tree。他是一个躺在树下的男孩。这就是doing，现在主动分词。所以这个名称相对我们来说，更好理解，doing和done。