I am just a small potato! 我是一个小人物!
　　 已经学习过"沙发上的土豆"(电视迷),he is a couch potato!
　　 For example, when you are in your family, you are a small potato! But when you are in school, everyone knows you are a monitor and students in your class will regard you as a big shot! 育路外语