Have to is a construction (structure). It is not a modal verb. We use
auxiliary verbs do and does to form questions and negatives.
Examples:
Have to is a construction (structure). It is not a modal verb. We use
auxiliary verbs do and does to form questions and negatives.
Examples:
Positive
I
have to work very unsociable hours.
She has to wear a uniform.
Negative
I
don't have to work at weekends.
John doesn't have to do any work at home.
Question
Do I have to pay in advance?
Does your father have to travel a lot at his job?
Positive
I
have to work very unsociable hours.
She has to wear a uniform.
Negative
I
don't have to work at weekends.
John doesn't have to do any work at home.
Question
Do I have to pay in advance?
Does your father have to travel a lot at his job?
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