Pronouns have different forms depending on:
* Person: First (I, me, my, mine), Second (you, your, yours), Third (he, him, his, she, her, hers, it, its, they, them, their, theirs)
* Number: Singular (I, you, he, she, it) or Plural (we, you, they)
* Case: Nominative (subject of the verb), Objective (object of the verb or preposition), Possessive (showing ownership)
* Gender: Masculine (he, him, his), Feminine (she, her, hers), Neuter (it, its)
Example:
* "I" is a first person singular pronoun in the nominative case.
* "Me" is a first person singular pronoun in the objective case.
* "My" is a first person singular pronoun in the possessive case.
Therefore, to understand the form of a pronoun, you need to identify its person, number, case, and gender.