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have to (EN)
глагол

глагол “have to”

инфинитив have to; он has to; пр. вр. had to; пр. прич. had to; гер. having to
  1. должен
    I have to finish my homework before I can go out to play.
  2. должно быть (выводится логически)
    She has to be the teacher because she's holding all the textbooks.