进行课后活动用英语怎么说

课后活动可以用英语表示为 "after-school activities".

它是由 "after-school" 和 "activities" 这两个词组合而成，意思是学校课程结束后的各种活动。

例句：

I'm joining the debate club as part of my after-school activities. (我加入了辩论俱乐部作为课后活动的一部分。)
The school offers various after-school activities, including sports, music and art. (学校提供各种课后活动，包括体育，音乐和艺术。)