do you often see Tomstudy in the library?No,but he is often seen play football in the playgroud.

问题描述:

do you often see Tomstudy in the library?No,but he is often seen play football in the playgroud.
为什么第一个often后面接动词原形 第二个often后面却接的是过去分词.

都是经常的意思,第一个问:经常见TOM在图书馆里学习吗?句子是一般现在时,often+do
第二个是他经常被看见.是被动语态所以是过去分词