"Boys who pke to play basketball" 的英语表达是 "Boys who are into basketball"。
"Into" 是英语中一个常用的介词，表示对某事有兴趣或爱好。例如：
He's into classical music. (他对古典音乐有兴趣。)
She's really into painting. (她对绘画非常有兴趣。)
还有一种表达方法是 "boys who enjoy playing basketball"。Enjoy 作为动词，表示喜欢做某事。例如:
He enjoys playing the piano. (他喜欢弹钢琴。)
She enjoys going for a run in the morning. (她喜欢早上跑步。)