Many are often confused by the correct usage of the words "who", "whom" and "whose"; particularly "whom". Interestingly, the word "whom" is not commonly used in modern spoken English, but rather in the formal written form. Generally, it is safer to use "Who" if one is unsure, since the use of "whom" can be limiting.

The difference between these two relative pronouns is that "who" is used in the subject position of a sentence or phrase, whereas "whom" can only be used in the object position, or after a preposition. Sounds technical? Click here for a clearer picture.