Can you show me how to do some good sit-ups next time I see you at the gym?
Could you show me how to do a proper sit-up next time we meet?
ーCan you show me how to do some good sit-ups next time I see you at the gym?
「次ジムで会ったとき、良い腹筋のやり方やって見せてよ」
how to do some good sit-ups で「良い腹筋のやり方」
next time I see you at the gym で「次ジムで会ったとき」
ーCould you show me how to do a proper sit-up next time we meet?
「次会ったとき、ちゃんとした腹筋のやり方を教えてよ」
how to do a proper sit-up で「ちゃんとした腹筋のやり方」
next time we meet で「次会ったとき」
ご参考まで！
カナダ 
