上课英语怎么写

　　We don't have to attend class for two days.

　　我们可以有两天不用上课。

　　I have to work overtime today, so I can't attend class.

　　我今天得加班，不能来上课了。

　　What is the most convenient time for you to attend class?

　　您上课最方便的时间是什么？