When should you use "who" and when should you use "whom" in a sentence?
There is a simple trick to knowing the difference between who and whom. All you have to do is answer your question or restate the sentence using "he" or "him". This trick also works with whoever and whomever!
he = who/whoever
him = whom/whomever
Who
Who is always used as the subject of the verb.
Whom
Whom is never used as the subject of a verb. It is the object form of a pronoun.
