Whom should be used to refer to the object of a verb or preposition. When in doubt, try this simple trick: If you can replace the word with “he”’ or “’she,” use who. If you can replace it with “him” or “her,” use whom.
- Who should be used to refer to the subject of a sentence.
- Whom should be used to refer to the object of a verb or preposition.
Who or whom? If you’re like most English speakers, you know that there’s a difference between these pronouns, but you aren’t sure what that difference is.