An appositive adds information to a noun or noun phrase, enhancing sentence structure.
An appositive is a noun or noun phrase that adds identifying details to a previously mentioned noun or noun phrase. Adding an appositive phrase can provide additional information while enhancing the sentence structure. For example, in the sentence 'The city is known for its beautiful architecture,' you can rewrite it as 'The city, famous for its beautiful architecture, boasts a rich cultural heritage.'.
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