"偶尔"在英语中可以说成"occasionally"，来源于拉丁语的"occidere"，意思是"偶然地出现"。

例句：

I occasionally play tennis with my friends on weekends. (我偶尔会在周末和朋友打网球。)

He occasionally reads a book before going to bed. (他偶尔会在睡觉前看本书。)

另外，"偶尔"也可以用"sometimes"表达。例句：

I sometimes go to the cinema by myself. (我有时候会独自去看电影。)

She sometimes stays up late to study for exams. (她有时候会熬夜复习考试。)