don't have to/should/ought
DON'T/ DOESN'T HAVE TO ( hoeft niet): iemand heeft nog een keuze. Het moet niet.
- You're a guest. You don't have to do the dishes.
SHOULD (zou moeten, advies):
- You shouldn't drink so much coffee.
OUGHT TO (zou moeten, verplichting, formeel!):
-You oughtn’t study while listening to music.