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  1. julianna's Avatar
    • Member Info
      • Native Language:
      • Arabic
      • Home Country:
      • Algeria
      • Current Location:
      • Algeria

    • Join Date: Jul 2009
    • Posts: 283
    #1

    Have to, must and needn't

    1. We us affirmativ and question forms of 'must' ad ' have to' to express
    obligation.
    EXAMPLE: you "must" start rom here. Do i " have to start from here?
    2. We use 'mustn't' / must not " t express prohibation.
    EXAMPLE: ou "mustn't " switch on the computer before quiting the program.
    3. We use 'need not'/ needn't" and 'do/des not have to'' to say that there's no obligation to do something.
    EXAMPLE: youneedn't/ don't have to send a message . Just phone them.
    Note: There's no past form of must. We use "had to" and "did not / didn't ahve to '' to express obligation and absence of obligation in the past.
    EXAMPLE: I missed the bus yesterday. So i "had to" walk to school.

  2. bhaisahab's Avatar
    • Member Info
      • Native Language:
      • British English
      • Home Country:
      • England
      • Current Location:
      • Ireland

    • Join Date: Apr 2008
    • Posts: 25,609
    #2

    Re: Have to, must and needn't

    Quote Originally Posted by julianna View Post
    1. We us affirmativ and question forms of 'must' ad ' have to' to express
    obligation.
    EXAMPLE: you "must" start rom here. Do i " have to start from here?
    2. We use 'mustn't' / must not " t express prohibation.
    EXAMPLE: ou "mustn't " switch on the computer before quiting the program.
    3. We use 'need not'/ needn't" and 'do/des not have to'' to say that there's no obligation to do something.
    EXAMPLE: youneedn't/ don't have to send a message . Just phone them.
    Note: There's no past form of must. We use "had to" and "did not / didn't ahve to '' to express obligation and absence of obligation in the past.
    EXAMPLE: I missed the bus yesterday. So i "had to" walk to school.
    Have you a specific question?

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