Unit 4 Body language
话题：肢体语言
体裁：说明文
写作思路：
定义；作用；注意事项。
Body language is a term used to describe people's facial expressions，gestures and other movements of the body that send messages.Body language plays an important part in communication.It is very useful because it can make people easily understood.But we must remember “different cultures，different body languages”．It is necessary for us to learn and use body language properly.
