140. Smile ，laugh

140. Smile ，laugh
smile 微笑,可作为动词也可作为名词。
smile at somebody向某人微笑。
If you are afraid to speak to your foreign teacher, before you begin, you should smile at her, and then you will be relaxed.

With a smile 带着微笑
with a smile on somebody's face，某人的脸上带着微笑。
My teacher often speaks to us with a big smile on her face. So we think she is very friendly.
laugh v. 笑
They talked and laughed happily there.
Laugh at somebody嘲笑某人
When someone is in trouble, we shouldn't laugh at them. It's not polite.