You have promised to play tennis with you friend every week, but you are not very good at it.

EXAMPLE:

A:I'm not very good at tennis, you know.

B:Don't worry! We are playing for fun. Just try and you'll see you can do it.

A:I haven't played tennis for a very long time.

B:Well done! That was a very good ball! You see you can do it!

A:I hope so. I enjoyed playing tennis with you. See you next week.