Bill: Hi, Mary! How are you doing? 
Mary: Hi, Bill! I'm fine. How are you doing? 
Bill: I'm great! You looks so slim(苗条). Do you like doing exercises? 

Mary: Yes, I like it very much. 
Bill: So what is your favorite sport?
Mary: Playing tennis, I think. 
Bill: How long have you played tennis?
Mary: Since I was six years old. 
Bill: So you have played tennis for 3 years, right?
Mary: You’re right. 
Bill: How often(多久) do you play tennis?

Mary: Once a week(一周一次). Would you like to play tennis with me this weekend?
Bill: I’d love to. 
Mary: What’s your favorite sport? 
Bill: Playing basketball. I think it is a team work. We need to work together to beat the opponents（战胜对手）. 
Mary: I agree with you. How often do you play basketball?
Bill: Almost everyday. 
Mary: You must be good at playing basketball!
Bill: In fact（事实上）, I’m fond of it but not good at it.
Mary: I wish that you could make a great progress（得到很大的进步）.
Bill: Thank you for your wishes（祝愿）.