A：Oh, leave me alone. I'm not interested in playing basketball or any other ball.
B: Be real, get a life.
get a life
exp. To do things one finds enjoyable and fulfilling.（做有意义的事情，振作起来）
e.g. College isn't just about studying and getting good grades. You need to get a life—go to parties, meet new people, join a sports club, anything!
e.g. Man, you need to get a life. Stop calling my girl.
1.leave someone alone：别管某人
e.g. Leave him alone and he' ll soon come round.
e.g. "Why don't you leave him alone?" said Dick.
e.g. The principal is busy at his desk. You'd better leave him alone.
2.be interested in：对.....感兴趣
e.g. He may arrive on time if he is interested in the match.
e.g. He is very interested in what are called popular songs.
e。g。 Autumn is better for reading than any other season。
e.g. The landscape of the West Lake is more beautiful than any other lake at all times.