Tony is a new student in our class. And he doesn't know any rules of our class. So we tell him when to sit,and how to speak and use school things.
When we are having a P. E. class,he wants to sit. "No!We can't always sit in the P. E. class!We walk,run and stand!"we say. And then he speaks in a low voice(低音),either. We show him how to do it.
At 12:00,we go to the dining hall. He sits at a table. "Good job!"we say. And then he speaks in a loud voice. "No!We can't be too noisy in the dining hall. It's not polite(礼貌的). " He wants to play with his food. "No!It's not right to do that. "
He doesn't know rules are different in different places. Then we go back to the classroom and write down the rules for different places at school. It'll be helpful to him.