WHO? significa ¿quién? Y que además es un pronombre relativo y que se debe traducir con la palabra QUE para especificar acerca de quién estamos hablando. Who is that man? The man who is in the car is a policeman. La palabra WHO se tranforma en WHOM, después de las preposiciones y cuando actúa como complemento directo de un verbo, y por lo tanto va seguido de un pronombre o un nombre.. With whom will you go to the party? (Who will you go to the party with?) I met a man in the street. The man whom I met was John´s father. Jim was talking about a woman. The woman about whom Jim was talking was his wife.
La palabra WHOSE (posesivo de who) se puede traducir como ¿de quién? en interrogaciones, pero también es el pronombre relativo cuyo(s)/cuya(s). a)Whose? = ¿De quién? Whose is this hat? o Whose hat is this? (el sustantivo hat puede ir al final o junto a whose) Whose are these cigarettes? / Whose cigarettes are these? (el sustantivo hat puede ir al final o junto a whose) Whose is that yellow sweater? (aquí el sustantivo está modificado por un adjetivo) Whose is that book on the desk? (aquí el sustantivo va seguido de una frase adjetiva)
b) Whose = cuyo(s) / cuya(s) A man wants to see you, Mr Clark. His daughter called you this morning The man whose daughter called you this morning wants to see you, Mr Clark. The man is a doctor. His car is parked outside the building. The man whose car is parked outside the building is a doctor.