have an interest in
例句：
How?long?have?you?been?taking?an?interest?in?children's?rights?
你对儿童权利问题感兴趣有多久了？
重点单词interest的用法
1、读音
2、释义
n.兴趣；嗜好；利息；股份
v.使…感兴趣
3、例句
1）用作名词(n.)
Nothing could awake his interest.
什么也不能引起他的兴趣。
2）用作及物动词S+～＋n./pron.
That book may interest you.
那本书会让你感兴趣的。
扩展资料
interest, amuse, please这三个词的***同意思是“使人感兴趣”。其区别在于：interest意为“引起兴趣，使人感兴趣”，着重于“引起”；amuse意为“给…娱乐，消遣”，在被动句中，后面跟介词at, by, with引出的短语或动词不定式；please意为“使人满意，使人高兴”，在被动句中，多与介词about, by, with连用，不用于进行体。例如：
He became very interested in science.
他对科学变得感兴趣了。
We were amused with the beautiful scenery.
那美丽的风景使我们感到愉悦。
I have been very much pleased by your analysis of the situation.
我十分满意你对形势的分析。