Уровень A2
Have to: внешнее обязательство — Have to: external obligation
Have to значит «надо»: так требуют правила или другие люди — I have to go. С he, she, it — has to. «Не обязан» — doesn't have to. В прошлом — had to.
I have to go.
Мне надо идти.
Смотрите: I have to go. Мне надо идти.
Формы
She has to work.— с he, she, it — has toShe doesn't have to work.— «не обязана», а не «нельзя»We had to wait.— в прошлом — had to
Типичная ошибка
Неверно: She doesn't must finish it.
Верно: She doesn't have to finish it.
Частая ошибка — ставят does перед must. Правильно так: She doesn't have to finish it.
Ещё примеры
Do you have to go now?
Тебе надо идти сейчас?
В вопросе впереди do: Do you have to go now?
He had to work yesterday.
Вчера ему пришлось работать.
А про вчера — had: He had to work yesterday.