interested in doing sth与interested to do sth
■ 表示做某件事情的愿望，虽然一般译为对做某事有兴趣，但其实是指有意做某事、期望做某事或想做某事，此时一般后接in doing sth。如：
Are you interested in going with us? 你感兴趣和大家一道去吗?
They all are just interested in making money. 他们个个只对赚钱有兴趣。
Anyone interested in joining the club should contact us at the address below. 有意加入会所者请按下面的地址和大家联系。
■ 表示对得知的状况作出的临时反应，其后一般后接to do sth。如：
I was interested to read in the paper that scientists have found out how to talk to whales. 我从报纸上看到，科学家已发现怎么样与鲸鱼谈话，我非常有兴趣。
I’minterested to see that Alice and Jake are going out together. 看到艾丽丝和杰克在谈恋爱，我非常有兴趣。
■ 表示期望知道状况或获得信息，其后既可接in doing sth，也可接to do sth。如：
I’m interested to hear your opinion. 我想听听你的建议。
I shall beinterested to know what happens. 我非常想了解状况会如何。
I’m interested in finding out [to find] out what she did with all that money. 我非常想弄了解那笔钱她是如何花的。
——摘自《中学英语高频词解析词典》（金盾出版社）
