1、Don’t climb on chairs or tables.
翻译:不可攀爬桌椅。
2、Don't make a noise.
翻译:不要大声喧哗。
3、Please raise your hand to tell the teacher if you have something to do.
翻译:有事请举手报告老师。
4、Please listen to the teacher carefully.
翻译:请认真听老师讲课。
5、Keep the classroom clean.
翻译:保持教室清洁。