Pronouns

Pronouns are words that replace nouns: I, me, she, we, they, who, that, yours, his, her, etc.

Pronouns need antecedents. That means that the thing (or person, or place) that the pronoun refers to needs to have been mentioned already by name somewhere earlier in the sentence or paragraph. If it’s not clear which thing the pronoun refers to, the reader can get quite confused.

I swam in the ocean. You swam in the ocean. He swam in the ocean. She swam in the ocean. It swam in the ocean.