你在上课前有预习的吗？
请早几分钟到，你在上课前要填几份表格。
Be here a few minutes early. You need to complete some forms before the class.
你在上课前和几个朋友闲聊。
中国人口总数是多少？中译英：你在上课吗？
如果你在上课的时候大发议论，你会有很多麻烦。
If you mouth off during class you will be in a lot of trouble.
当你在上课之外见到你的教授，你认为你们会讨论什么问题?。
When you run into your professor outside of class, what do you think you'll discuss?
如果你不得不在上课时离开，那就悄悄地走。
苏：或许你应该在上课时帮他重新写这首歌……
Sue： Maybe you should help him rewrite this song during class……
在上课时你应该仔细听老师讲课。
渊源，你不是在上课嘛？
你安静的离开。其他班仍然在上课。
如果你不得不在上课时离开，请尽量减小中途退出的影响。
If you have to leave during class, please try to minimize the disruption.
在上课之前你必须写出教案，学校会定期检查。
You have to write teaching plans for every class. School will check them.
渥克老师：拿着通行证，在上课时间你可以去洗手间或任何你需要去的地方。
Ms. : With a hall pass, you can go to the ladies' room or wherever you need to go during class time.
等一下，我们在上课，下课了你再来。
No, we are having a class now. You may come when we are finished.
你不该在上课时使用手机。
你不该在上课时使用手机。
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