Okay, so when we talk, we use words to describe things like people, animals, and things. These words are called nouns. An antecedent is a fancy word for the noun that comes before another word in a sentence.
For example, let's imagine you have a puppy named Spot. If you say "He is so cute!" the antecedent is "Spot" because that's the noun referring to your cute puppy.
Or, let's say you want to talk about your favorite movie. You might say "It's so entertaining!" The antecedent here is "movie" because that's the noun you're talking about.
Antecedents help us understand what we're talking about and keep our sentences clear. It's like giving our words a helpful guide to follow!