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  1. #1
    joham is offline Key Member
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    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.

  2. #2
    Tdol is offline Editor, UsingEnglish.com
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    Re: should/must have completed

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

  3. #3
    riverkid is offline Banned
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    Re: should/must have completed


  4. #4
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    Re: should/must have completed

    Ah.,. this is useful. Thanks.

  5. #5
    riverkid is offline Banned
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    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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