Common mistake Who + verb (who know's/knows)

The Common Mistake "Who + verb" is a grammatical error that occurs when a sentence includes the word "who" followed by a verb in the base form. This mistake often happens when the writer or speaker is unsure of which form of the verb to use after "who". For example:

Who + verb in the base form

Incorrect: Who know's the answer?

Correct: Who knows the answer?

In the incorrect sentence, the apostrophe and "s" are added to the verb "know", which is unnecessary and incorrect. The correct sentence uses the base form of the verb "knows" after the subject "who".

Using the Linguix Grammar Checker

The Linguix grammar checker is a useful tool that can help you avoid common mistakes like the "Who + verb" error. By using this AI-powered tool, you can receive instant feedback and suggestions to improve your grammar and writing style. It helps you catch errors like subject-verb agreement issues and provides you with the correct form of the verb to use after "who" or any other subject.

Who + verb (who know's/knows) mistake examples

  • Incorrect:
    Who care's?

    Who cares?

  • Incorrect:
    Who know's?

    Who knows?

  • Correct:
    I wonder where Tom is and who he's with.
  • Correct:
    I found out who Tom's father is.
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