Here's why:
* Appositives: Appositives are words or phrases that rename or describe a noun or pronoun that comes before them. They add extra information but are not essential to the sentence's grammatical structure.
* Subject and Predicate: A subject is the person or thing performing the action, and the predicate is the part of the sentence that tells what the subject does or is.
Example:
* My dog, a golden retriever named Buddy, loves to play fetch.
In this sentence:
* "My dog" is the noun being described.
* "a golden retriever named Buddy" is the appositive phrase. It renames "my dog" but does not have its own subject (who is performing the action) or predicate (what the action is).
Key Takeaway: Appositives simply provide additional information about a noun or pronoun, not an independent clause with a subject and predicate.