补课班用英语通常叫作 make-up class，来源是因为该班级是用来补充或弥补学生漏掉的课程内容。例句：

I have to go to a make-up class because I missed last week's lesson. (我必须去参加一个补课班，因为我上周漏掉了一节课。)

The teacher will hold a make-up class next Saturday to review the material we covered in class. (老师下周六将举办一个补课班，复习我们在课堂上学过的内容。)

If you can't attend the make-up class, you can ask a classmate to give you the notes. (如果你不能参加补课班，你可以请同学给你笔记。)