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Anonymous Posted 9 years ago
Grammar

'have' not 'has'

In the sentence:

'She can't have heard you'

why is 'have' used if the subject is the third person?
  

Top answer

) we use the base form of the verb, no matter what the subject is.

  • ) we use the base form of the verb, no matter what the subject is.
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1 Answers
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After modals (can,could,will,would,etc.) we use the base form of the verb, no matter what the subject is.

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