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    • Member Info
      • Native Language:
      • Chinese
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    • Join Date: Jul 2008
    • Posts: 278
    #1

    must be or must have been?

    If he really said that, he must be crazy.

    If he really said that, he must have been crazy.

    -------

    Can you tell me which is more proper? Are both acceptable?

  1. rlfwood's Avatar

    • Join Date: Jan 2010
    • Posts: 96
    #2

    Re: must be or must have been?

    They have different meanings. The first one says that he must be crazy now. The second one says that he must have been crazy when he said that (but perhaps his insanity was only temporary).

    • Member Info
      • Native Language:
      • Chinese
      • Home Country:
      • China
      • Current Location:
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    • Join Date: Jul 2008
    • Posts: 278
    #3

    Re: must be or must have been?

    Quote Originally Posted by rlfwood View Post
    They have different meanings. The first one says that he must be crazy now. The second one says that he must have been crazy when he said that (but perhaps his insanity was only temporary).


    Thank you. If I say: he must be crazy when (not if )he said that, is that ok and does it mean the same as 'he must have been crazy when he said that?

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