When do you use who vs. whom? Our language is changing, and it's becoming more appropriate to use "who" all over the place. But the basic rule is that "who" is the subject form ("Who is calling, please?") and "whom" is the object form ("Whom did you see in the garden?")
Using WHO, WHOM, WHOSE in english; Using WHO in English Who is a subject pronoun like 'I', 'he', 'she', 'we' and etc… We use WHO to ask which person does an action or which person is a certain way. Example Sentences; Who is this? Who will come early tomorrow? Who on earth believes that? The children who came late waited in the class. The new teacher who has short hair is from When to Use "Who" vs. "Whom". Whom is 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.