“老师坐在教师后面听课”里面的“听课”英语怎么说?

问题描述:

“老师坐在教师后面听课”里面的“听课”英语怎么说?
可以直接说 listen classes 么

the teacher is sitting at the back of the classroomto linsten to the class .
listen 后应加 to.即 listen to classes.