how long - have been/are

  • Elwintee

    Senior Member
    England English
    I think it is because 'have you been' refers to the length of past time you are enquiring about. We use the present tense when referring to the future: "How long are you staying here?" expects the answer "Until Sunday / for a further week" etc.
    So "How long are you married?" sounds very confusing to a native speaker.
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