浓厚的兴趣的英文：
keen interest

参考例句：

He has developed a consuming passion for chess.
他对下棋产生了极为浓厚的兴趣。

Any very strong interest or emotion, for Hawthorne, is next door to mania.
浓厚的兴趣或强烈的感情，对霍桑来说，都几近疯狂。

eager:Having or showing keen interest, intense desire, or impatient expectancy.
热切的:具有或显出浓厚的兴趣、强烈的愿望或迫不及待地期望.

He grew up in Beijing, hence his strong interest in Beijing Opera.
他长在北京，因此对京剧有很浓厚的兴趣。

Any very strong interest or emotion, for Hawthorne, is next door to mania
浓厚的兴趣或强烈的感情，对霍桑来说，都几近疯狂。

Favorable affections will arouse the interests of learning and become the motivation of leaning.
良好的情感能够激发出浓厚的兴趣,进而转化为学习的动力。

He is always talking about his deep interest in literature, but it's just a pose.
他经常说他对文学有浓厚的兴趣，其实这不过是附庸风雅而已。

The system no longer had much interest in offering nontraditional, new, and extra services to older youths.
这个系统不再有浓厚的兴趣给较年长的年轻人提供非传统的新式的和额外的服务。

keen是什么意思：
adj. 敏锐的；热心的；强烈的，渴望的；激烈的；锐利的

The competition for the first prize was keen.
争夺第一名的竞争很激烈。

My daughter is keen of hearing.
我的女儿听觉灵敏。

This knife is very keen.
这把小刀非常锋利。

Dogs have a keen sense of smell.
狗的嗅觉很灵敏。

She is keen on algebra.
她对代数极感兴趣。