tenjing He couldn't be working in his office now because the office is closed today. Here the use of 'could be' is correct? Yes, it's correct, but it projects less certainty than "can".
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tenjing He couldn't be working in his office now because the office is closed today. Here the use of 'could be' is correct?Yes, it's correct, but it projects less certainty than "can". If the speaker is very certain about what he is saying, he says this:
tenjing Here the use of 'could be' is correct?Is the use of'could be' here correct?