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      • Native Language:
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    • Join Date: Oct 2007
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    #1

    should/must have completed

    He _____ have completed his work; otherwise he wouldn't be enjoying himself by the seaside.
    The answer is 'must'. I was wondering if we could also use 'should'.
    Might I ask native English teachers to help me? Thank you very much.

    • Member Info
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    #2

    Re: should/must have completed

    'Must' makes better sense to me because it is an assumption based on the current situation.


    • Join Date: Aug 2006
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    #3

    Re: should/must have completed



    • Join Date: Feb 2008
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    #4

    Re: should/must have completed

    Ah.,. this is useful. Thanks.


    • Join Date: Aug 2006
    • Posts: 3,059
    #5

    Re: should/must have completed

    Quote Originally Posted by joham View Post
    He _____ have completed his work; otherwise he wouldn't be enjoying himself by the seaside.
    The answer is 'must'. I was wondering if we could also use 'should'.
    Might I ask native English teachers to help me? Thank you very much.
    Here, 'should' feels like it only has a deontic/social modal meaning, as in,

    He should have completed his work; he shouldn't be enjoying himself by the seaside when there's still so much to be done.

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