Good manners mean good behavior. They are very important in the communication of daily life. Everyone likes a person with good manners. Well, how do we try to be a good or mannered person?
A person with good manners never laughs at people in trouble. Instead, he (she) always tries to offer help to the person. When he (she) takes a bus and sees an old man or a sick man, he (she) always gives his (her) seat to him. He doesn't interrupt other people when they are talking. He uses a handkerchief when he sneezes or coughs. He does not drop litter and spite in public places.
In a word, so long as we follow the above, I belive we will become a good or mannered person in the near future.