1. She's done skydiving before.
Przeczenie: She hasn’t done skydiving before.
2. I saw the game last night.
Przeczenie: I didn’t see the game last night.
3. He plays tennis very often.
Przeczenie: He doesn’t play tennis very often.
4. We're leaving early tomorrow.
Przeczenie: We aren’t leaving early tomorrow.
5. They were studying English.
Przeczenie: They weren’t studying English.
6. She'll enjoy the concert.
Przeczenie: She won’t enjoy the concert.