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Anonymous Posted 8 years ago
Grammar

Do they mean the same and are they all correct?

A: Louisa is still in Palma, so you can't have seen her at the library.

B: Louisa is still in Palma, so you couldn't have seen her at the library.

C: Louisa is still in Palma, so you mustn't have seen her at the library.

  

Top answer

The example with "mustn't" isn't as positive as the others. " in it.

— Englishmaven

  • The example with "mustn't" isn't as positive as the others.
  • " in it.
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1 Answers
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The example with "mustn't" isn't as positive as the others. There is an implication of "How could that be?" in it.

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