who / whom

Who is the SUBJECT. The subject performs the action:

  • Who ate the last piece of pizza?

    who = subject ate = verb

  • The students who failed the test will need extra help.

    the students / who = subject failed = verb

    Whom is the OBJECT. The object receives the action:

  • Bob gave the money to whom?

    Bob = subject gave = verb money = direct object whom = indirect object

    Whom is always used after a PREPOSITION.

  • My three brothers, one of whom is a doctor, live in New York.

    (of = preposition)

  • With whom did you go to the movies?

    (with = preposition)

  • That’s the employee at whom I yelled.

    (at = preposition)

  • I no longer speak to the person from whom I got this gift.

    (from = preposition)