Отсутствие обязательства

Указание на отсутствие обязательства в конструкциях (needn't, don't need/have to, haven't got to)

Четыре фразы, которые помогут нам передать идею отсутствия обязательства (lack of obligation) или необходимости:
- needn't (do)
- don't / doesn’t need to
- don't / doesn’t have to
- haven't / hasn’t got to

Примеры:
- You needn't take food with you ...
- You don't need to buy a battery
- You don't have to take an exam ...
- You haven't got to leave yet ...