Student or Learner
I've just learned the phrasal verb pay off. Could you tell me if I used it correctly in these sample sentences?
1. The surgical operation that he underwent last month has already paid off because as long last, his wife finally became pregnant after 5 years of trying to have a baby.
2. All the hard work that we do in choral competition paid off. We picked up a first price.
Thanks a lot
Yes. You received a benefit in exchange for the effort that was made.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.