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

题目

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.

答案

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