Răspuns:
We have to do our homework every day.
neg.: We don't ha to do our homework every day.
interog.: Do we have to make our homework every day?
trecuta: We had to make our homework every day.
neg. trecuta: We didn't have to make our homework every day.
interog. trecuta: Did we have to make our homework every day?
They have to leave soon.
neg.: They don't have to leave soon.
interog.: Do they have to leave soon?
trecuta: They had to leave soon.
neg. trecuta: They didn't have to leave soon.
interog. trecuta: Did they have to leave soon?
She has to improve her English.
neg.: She doesn't have to improve her English.
interog.: Does she have to improve her English?
trecuta: She had to improve her English.
neg trecuta: She didn't have to improve her English.
interog trecuta: Did she have to improve her English?
I have to be home by ten.
neg.: I don't have to be home by ten.
interog.: Do I have to be home by ten?
trecuta: I had to be home by ten.
neg trecuta: I didn't have to be home by ten.
interog trecuta: Did I have to be home by ten?
You must behave at the theater.
neg.: You mustn't behave at the theater.
interog.: Must you behave at the theater?
trecuta: You must have behaved at the theater.
neg trecuta: You mustn't have behaved at the theater.
interog trecuta: Must you have behaved at the theater?
She must study for her exams.
neg: She mustn't study for her exams.
interog: Must she study for her exams?
trecuta: She must have studied for her exams.
neg trecuta: She mustn't have studied for her exams.
interog trecuta: Must she have studied for her exams?
We must help our friends.
neg: We mustn't help our friends.
interog.: Must we help our friends?
trecuta: We must have helped our friends.
neg trecuta: We mustn't have helped our friends.
interog trecuta: Must we have helped our friends?
