·

have to (EN)
动词

动词 “have to”

不定式 have to; 三单 has to; 过式 had to; 过分 had to; 动名 having to
  1. 必须
    I have to finish my homework before I can go out to play.
  2. 只能 (指逻辑上或可能性上的必然结论)
    She has to be the teacher because she's holding all the textbooks.