Definition :
A pronoun is used in place of a noun or nouns. Common pronouns include he, her, him, I, it, me, she, them, they, us, and we.Here are some examples:
INSTEAD OF: Dwi is a good athlete.
he is a good magician. (The pronoun he replaces Dwi.)
INSTEAD OF: The beans and tomatoes are fresh-picked.
They are fresh-picked. (The pronoun they replaces the beans and tomatoes.)
Often a pronoun takes the place of a particular noun. This noun is known as the antecedent. A pronoun "refers to," or directs your thoughts toward, its antecedent.
Let's call Dwi and ask him to join the team. (Him is a pronoun; Dwi is its antecedent.)
To find a pronoun's antecedent, ask yourself what that pronoun refers to. What does him refer to in the sentence above—that is, who is the him? The him in the sentence is Dwi; therefore, Dwi is the antecedent.