An appositive noun or noun phrase follows another noun or noun phrase in apposition to it; that is, it provides information that further identifies or defines it.

How do you use Appositives?

Rule: When an appositive is essential to the meaning of the noun it belongs to, don't use commas. When the noun preceding the appositive provides sufficient identification on its own, use commas around the appositive. Example: Jorge Torres, our senator, was born in California.

What is the function of an appositive sentence?

The function of an appositive is to provide more information or clarity to the readers. The information can be additional or essential and it helps the readers to identify the noun or pronoun and relate to the context.