●be interested in to do sth

Question

be interested in to do sth和be interested in doing sth有什么区别？常用的是dong sth，但是什么时候用to do sth？谢谢。
书上有个句子是用的to do sth ，我也觉得奇怪才来问的，但绝对是有的。

Answer 1

be interested in doing sth是be interested in sth的动名词的用法，表示爱好，对……感兴趣，是一种长久以来的爱好。
be interested in to do sth是指一时想去做某事。
和like doing与like to do一样啦

Answer 2

be interested in doing sth只有这个用法

Answer 3

be interested in doing sth表示习惯性爱好
to do sth表示一时想法

Answer 4

只有Be interested in doing sth

Answer 5

be interested in doing sth只有这个用法

Answer 6

be interested in +名词或doing sth只有这两个拉