have class只表示”上课“这个概念时class前面不用修饰语，用have classes；当表示上一堂什么（英语/汉语/数学/物理）课时要用冠词。例句：We have different classes every day。我们每天都有不同的课。
have classes例句
It&39;s time for us to have classes.
是我们上课的时间了。
Have classes together with the Chinese students.
跟中国学生一起上课。
It&39;s time to have classes.
是上课时间了。
We have classes in one room.
当然，我们也可以说。
The teaching building is in the east and we have classes there every day.
教学楼在东边，我们每天都有课。
