verb
have
Be required to do something.
We have to leave before the last train.
Etymology
The obligation construction treats a task as something one has before one to perform. Have to became the regular expression for being required to do it.
More examples
- She has to wear a helmet.
- I had to cancel our reservation.
- Do we have to bring lunch?
Forms
have · has · had · having
Similar words
- must
- Expresses obligation directly; has no ordinary past tense.