1. My cram school teacher has been working one-on-one with me to catch up with the class.2. A ball, a hoop and a person are all you need to play one-on-one basketball.3. Playing basketball one-on-one either with a friend or the computer is fun.
One-on-oneOne-on-one 是一對一的正統的美語說法，一對一比賽籃球就可以說 Play basketball one-on-one.
It is indecen of him to take money away from his divorced wife.