what does"be polite"mean?作文

如下
In our life.It is important to be polite.Many people like to work with,play with and talk to polite people.What does “Be polite” mean?Do you know?Let me tell you.When you walk on busy streets,you should say,“Excuse me.” When you answer the phone,you should say “Hello.” When you meet new people,you should shake hands and talk to them.When the bus is coming,you should line up and wait.At last,when you get on the bus,you should let old people sit down first.Remember that!Do you understand?I think I will be a polite girl and I hope you will be a polite person,too.Let’s be polite.