Personal pronouns Subject form Object form Singular First person I me Second person you you Third person he, she, it, one him, her, it, one Plural First person we us Second person you you Third person they them We use subject forms as subject of the sentence, e.g.: I want to go.She liked the film.They aren't working.We use object forms as object of the sentence, e.g.: Did Peter see me?Give her the address.I like them.We also use object forms as object of a preposition, e.g.: Is this for me?All of us/themThey arrived after us.It is normal to use the object forms on their own, e.g.: A: Who's there? B: Me.Mary's taller than her.It is also normal to use the object forms after the verb be, e.g.: That's a photo of Jim when he was about 15, and this is him when he was a bit older. (Aquella es una foto de Jim cuando tenía 15 años, y ésta es de él cuando era un poco mayor.)In formal style we use one where Spanish uses hom; in normal usage we express the same idea with you. Compare, e.g.: One should go to the doctor if one is ill. (Si alguien se encuentra enfermo debería ir al médico.)You should go to the doctor if you're ill. (Deberías ir al médico si estás enfermo.)See also possessive adjectives, possessive pronouns, table of personal pronouns and possessive words.