Obligations:
You have to go to the store.
You need to help your father.
You have to clean your room.
Interdictions:
You're not going anywhere
You are not allowed to go with your friends.
You are not allowed to eat sweets.
Without Obligations:
Another time you can go to the store.
One day you can go.
Every time you go.
Sper ca te-am ajutat! Succes!