Do you know how people get their names? Let me tell you something family names in North America. People there (have) two names. Usually, their (father) last names are their last names. It is also the family name. At the beginning(起初),people in North America only have one name. After some time, there (be) many people with the same name. It's difficult (know) who is who. So they need a (two) name. People in North America have good idea. Children of John have a name like Peter Johnson, Mary Johnson and so on. Jackson, Anderson Davidson are the same. Some people get their last names from their living places. A family take the name Green because they live in a village with many green (tree). People also get (they) names from their work. A person bakes(烘烤)bread and his last name is Baker.