What Is The Difference Between Who And Whom | Who Vs Whom

 Who vs. Whom

When you’re trying to figure out whether to use who or whom, it helps to know the difference between subjects and objects because you use who when you’re referring to the subject of a clause and whom when you’re referring to the object of a clause. In other words, who is a subject pronoun and whom is an object pronoun. 

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.

Examples:

—Who/Whom wrote the letter?

He wrote the letter. Therefore, who is correct.

—Who/Whom should I vote for?

Should I vote for him? Therefore, whom is correct.

—We all know who/whom pulled that prank.

This sentence contains two clauses: we all know and who/whom pulled that prank. We are interested in the second clause because it contains the who/whom. He pulled that prank. Therefore, who is correct.

—We wondered who/whom the book was about.

This sentence contains two clauses: we wondered and who/whom the book was about. Again, we are interested in the second clause because it contains the who/whom. The book was about him. Therefore, whom is correct.