经典句子：

It's hard for him/her to pay attention.他/她很难集中注意力。

Sometimes he/she lies.有时他/她说谎话。

Sometimes he/she says bad languages.有时他/她说脏话。

He/She never did that at home.他/她在家从来不这样。

I told him/her no yelling, no pushing.

我告诉他/她别大喊，别推别人。

He/She is easy to get grumpy.他/她很容易发脾气。

He/She likes to start a fight.他/她喜欢挑架。

Sorry. That's not what I expected. 对不起，这不是我期望的。

No scrawling over the wall.不要在墙上乱写乱画。

No writing on the desk.不要在桌子上写字。

It's not polite to snack in class.课堂上吃东西是不礼貌的。

If he/she can't obey the rules, I'm afraid he/she might be punished.

如果他/她不能遵守规则，恐怕他/她会受罚的。

How? 怎么（惩罚）呢？

Standing in class, for example.比如说，罚站。

Hope you could understand.希望您能够理解。