Question

是have interest on还是have interest in

Answer 1

应该是have interest in,因为“兴趣”是不可数名词.还有个短语 be interested in也是表达这个意思,并且更常用.
如果是“have interest on”，“interest”在这里就是利息的意思。
interest
n. 兴趣，爱好；利息；趣味；同行
vt. 使……感兴趣；引起……的关心；使……参与
[社科] 兴趣 利益 产权
短语
Insurable Interest 保险利益 ; [保险] 可保利益 ; 可保权益 ; 可保险产权
personal interest 个人利益 ; 个人兴趣爱好 ; 兴趣爱好 ; 人兴趣
absolute interest [法] 绝对权益 ; 绝对产权 ; [法] 绝对利益 ; 绝对于权益
I have no interest in him.
我对他没有兴趣。
No better state than this, go down with interest.
没有比这更好的状态，与兴趣一起下去。
But after a while, we realise that not only is she not screaming, she also appears to have noromantic interest whatsoever.
但是在影片进行一段时间后，我们才意识到她非但没有尖叫，似乎对任何浪漫也都不抱兴趣。

Answer 2

表达对什么有兴趣的意思时，都是可以的，意思相同，后面可以接名词
短语分析
have interest on
1.Have interest on this invention.
对这项新发明有兴趣。
2.I like music, literature, and have interest on astronomy, geography, nature andmysterioso cultures, etc.
兴趣、爱好广泛，喜欢音乐、文学艺术，对天文、地理、自然、神秘文化等感兴趣。3.Maybe you can leave your Weibo account here, and the people who have intereston you can pay attention to you.
也许你可以在这里留下你的微博账号，让更多对你有兴趣的人了解你。
4.Up to now, people have more interest on the research of the ruin probabilityincluding fix income of investment.
直至最近，对含具体投资收益的破产论的研究兴趣才猛增。

have interest in

英[hæv ˈintrist in] 美[hæv ˈɪntrɪst ɪn]
v. 有兴趣;
例句
1.A useful way to express that not everyone will have interest in this topic.
这是一个表达不是每一个人都对这个话题感兴趣的适当说法。
2.China was devoted to economic construction, so did not have interest in civil turmoil.
中国现在是致力于经济建设，对内乱没有兴趣。
3.What other languages do you have interest in, French, Japanese, Korean?
你还对别的语种感兴趣吗？比如，法语、日语、韩语？
4.Google, of course, also appears to have interest in on- demand delivery, given itsrecent Express roll-out.
而考虑到谷歌最近推出了Express，他们无疑对按需送货也很感兴趣。

Answer 3

如果对某事感兴趣是interest in……。interest on的话，interest就是利息的意思了。比如说An interest on loan 5% a year 贷款一年5%的利息。如果是“感兴趣是interest in，如果是利息就是“interest on。

Answer 4

应该是后者，“对。。。感兴趣”

Answer 5

have interest on 和 have interest in 都可以使用

区别是:
have interest in something 对某事情感兴趣
have interest on somebody 对某人感兴趣