第三人称单数： keens 现在分词： keening 过去式： keened 过去分词： keened 比较级： keener 最高级： keenest
派生词： keenly （adv.） keenness （n.）
1.You're not keen on going, are you?
2.I got quite keen on the idea
3.She was a keen amateur photographer.
4.He's a very keen student and works very hard
5.He had retained a keen interest in the progress of the work.
1.This flower has got a keen scent.
2.Mary is a keen critic.
3.She is a keen reader of my novels.
1.This knife is very keen.
2.The north wind is keen and biting.
3.Her father wants her to go to university, but she is not keen.
S+be+keen+ prep .-phrase
1.She is really keen about the trip.
2.He is so keen about his game as to forget everything else.
S+be+keen(for sb)+to- v
1.The boy is keen to go to sea.
2.He's keen to pass the examination.
1.The parents were keen that their daughter should become musician.
keen edge 锋利的刀刃
keen interest 强烈的兴趣
keen to pass the examination 渴望通过考试
keen to visit that city 很想去参观那个城市
keen about going to the picnic 希望去野餐
keen about〔on〕 music 爱好音乐
keen of hearing 听力敏锐
1.His keen interest in designing elegant and user-friendly gadgets.
2.it had keen moved to the next block.
3.I suspect that some experts in the field will be keen to address alternative explanations, such as unassessed variables playing a role in the well-being decline.
2019年12月六级真题（第一套）阅读 Section B
4.Now some experts are proposing that we should take advantage of the teen brain's keen sensitivity to the presence of friends and leverage it to improve education.
2018年6月六级真题(第二套)阅读 Section B
5.A software engineer by profession, Steve was a keen lover of the piano, and the only musician in his family.
2019年高考英语江苏卷 阅读理解 阅读D 原文
6.After reading some history books on how the first group of Chinese immigrants survived in America of the 19th century, she has become keen on her own family history and that of others.
2015年高考英语广东卷 阅读理解 信息匹配 题设