have to

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  • hafta (非正式,非標準)



to have to(第三人称单数现在式 has to,现在分词 having to,过去式 had to,过去分词 had to

  1. 必須不得不
    • 1898, 溫斯頓·丘吉爾, chapter 1, in The Celebrity:
      I was about to say that I had known the Celebrity from the time he wore kilts. But I see I will have to amend that, because he was not a celebrity then, nor, indeed, did he achieve fame until some time after I left New York for the West.
    • 2013 July-August, Henry Petroski, “Geothermal Energy”, in 美國科學家, volume 101, number 4:
      Energy has seldom been found where we need it when we want it. Ancient nomads, wishing to ward off the evening chill and enjoy a meal around a campfire, had to collect wood and then spend time and effort coaxing the heat of friction out from between sticks to kindle a flame.
    I just have to have that shirt;  you have to wear a seat belt
  2. (與be動詞連用)一定(邏輯推斷)
    that has to be the postman;  it has to be an electrical fault
    一定是快遞員;  一定是有電器故障


have to 後常跟動詞不定式。

I don't want to go to school, but I have to.