请教一下各位"上课"用英语怎么说?谢谢!

如果说一个学生上课就说have a class

class begin!

class

上课
1. attend class ; go to class
2. conduct a class ; give a lesson (or lecture )

学校八点开始上课。
Classes begin at 8.

在一所大学上课
attend classes at a college

他上课从不记笔记。
He never took notes in class

虽然他感到不适,今天还来上课
He comes to class today although he is not feeling well.

attend class ; go to class ; give a class

Class begins!