The answer to "what" is a thing.
The answer to "whom" is a person.
The pronoun "whom" functions as the object of a verb or a preposition.
The corresponding pronoun "who" functions as the subject of sentence or a clause.
The pronoun "what" functions as a subject or an object in a sentence.
Verb
Verb or verb phrase
D.O. is what or whom I.O. is to whom or for whom
Give the letter to Mary. to whom?The letter is for Mary. for whom?
whom
It is spelt "whom". It is the objective form of "who".
The indirect object in a sentence tells to whom or for whom the action is being done. It usually answers the question "to whom" or "for whom." For example, in the sentence "I gave her a book," "her" is the indirect object indicating to whom the action of giving is done.
No, "whom" is used as the object of a verb or preposition in formal English, while "who" is typically used in more informal contexts.
To whom it may concern Who is a subject pronoun; it is used as the subject of a verb. Whom is an object pronoun. If you find you can replace who/whom with he, she, or they, who is correct. If you find you've replaced who/whom with him, her, or them, then whom is correct.
with whom
Con quien means "with whom"
With whom did she go with? Whom I did not like very much. I wouldn't be suprised at whom he ran away with.
Indirect objects answer the questions "to whom?", "for whom?", "to what?", or "for what?" in a sentence.
"Whom" is not a substitute for "who", it's another case. "Who" is the Nominative, while "whom" is either the Dative or the Accusative.To whom do we owe this pleasure?Whom have you told so far?The girl whom I saw yesterday is her sister.