Does your girl friend like swimming?
Yes, she does. She is good at backstroke and free style.
Then you can help her with the breaststroke and sidestroke.
But she wants to learn the butterfly stroke
Really? Then just ask her to follow me.
I heard you are now practicing underwater swimming, aren't you?
Yes. But I still have some difficulties it breathing.
Say, kid, keep on practicing, you're sure to be a first-class swimmer.
To tell you the truth, I have never thought of being a swimmer. I swim just for fun.
That's good.