interested in后面接动词的ing形式，完整结构为be interested in doing sth。表示对......感兴趣。例句：People are not interested in movies anymore（人们不再对电影感兴趣了）。

interested in的例句：I think the young man is getting interested in gardening（我认为这个年轻人开始对园艺产生兴趣了）；He was not interested in a romantic relationship with Ingrid（他并没有兴趣和英格丽德发生性关系）。