slovník Polský - Angličtina
- 
to nie jest konieczne v angličtině:
1. 
it's not necessary
2. 
don't have to
you don't have to do it if you don't want to
I don't have to where uniform (nie muszę)
We don't have to tidy.
You don't have to wear a suit to work, but you can if you want to.
I don't have to buy any more seeds.
I don't have to bring a dictionary
You don't have to apologize, Ben.
It's June. We don't have to go to school.
We don't have to go to work on Sunday./ She doesn't have to cook every day.
Student's don't have to ask to use the computer.
I regret I don't have to work mannually.
that is not necessary 
this isn't necessary 
it's not a must 