What's the Difference between "Must
Not" and "Don't Have To"?
not = mustn't = this is not allowed / this is against the rules.
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"You mustn't drive further."
- "You mustn't smoke in here."
- "Kids must not drive."
- "You must not cross the road when there is a
Don't Have To
Don't have to = this is not necessary / it's okay not to do it.
"You don't have to buy from him."
- "You can come with us to the trip, but you
don't have to."
- "She doesn't have to work there. She can quit."
- "I don't have to agree with everything he
In summary, "must not" is a command
to do something, and "don't have to" leaves the choice