“在课堂上不允许讲话。”这句话用英语怎么说啊？

不允许讲话 - no talking
那向老师提问，或回答老师的提问，不讲话吗？
你是说不准私底下交谈吧

chit-chatting is not allowed in/during class

Don't talking in the class.
应该是这样```

No talking allowed during class.

Don't talk in class.

No talking in class