Use have to, conjugated like a regular present simple verb, to express external obligation and necessity, as in I have to wear a uniform at school. Don’t or doesn’t have to means something is not necessary, not that it is forbidden, as in we don’t have to work on Sundays.
Grammar Rule
Have to is conjugated like a regular present simple verb. Don’t/doesn’t have to means something isn’t necessary, not that it’s forbidden.
Have To for Obligation: Rules and Examples
| Subject | Form | Example |
|---|---|---|
| I / you / we / they | have to | I have to wear a uniform at school. We don’t have to work on Sundays. |
| he / she / it | has to | She has to finish her homework before dinner. Does he have to wake up early? |
Remember: don’t/doesn’t have to means something isn’t necessary, not that it’s forbidden.
Practice Test
Instructions
Answer each question in the test below forming the correct sentence with have to. You will get a new random set of questions every time you retake the test, plus a downloadable results summary with your name and score at the end.
Modal Verb Have to – Obligation and Necessity
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Frequently Asked Questions
How do you form have to?
Have to is conjugated like a regular present simple verb, using have with I, you, we, and they, and has with he, she, and it.
What does don’t have to mean?
Don’t or doesn’t have to means something is not necessary or required, not that it is forbidden, as in we don’t have to work on Sundays.
What kind of obligation does have to express?
Have to typically expresses an external obligation, a rule or requirement imposed by someone or something else, such as a school or a job.
How do you form questions with have to?
Use does or do before the subject and have, as in does he have to wake up early, following the normal present simple question pattern.