Are you interesting? 国人常见英语错误。
A book can be interesting; a person can be insteresting, and, not the least, I can be interesting too.
But what the person really want to ask, is if I am interested.
------------
a insteresting book: 一本有趣的书
a interesting guy: 一个有趣的人
a interested guy: 一个对此感兴趣的人
------------
so, I am a instereting person, are you interested?