Final answer:
The bold appositive phrase is a clarifying or explanatory element that follows a noun within a sentence, providing more information about it. Appositives can be essential or nonessential and can significantly impact the sentence's detail and emphasis.
Step-by-step explanation:
The bold appositive phrase in a sentence refers to the additional information or clarification that directly follows a noun, meant to explain or elaborate on that noun. Appositives can be essential or nonessential, and their inclusion can significantly alter the emphasis or detail provided in a sentence. Let's consider the following example:
My brother, a skilled amateur astronomer, is setting up the telescope for a night of star gazing.
The bold appositive phrase is a clarifying or explanatory element that follows a noun within a sentence, providing more information about it. Appositives can be essential or nonessential and can significantly impact the sentence's detail and emphasis.
In this sentence, 'a skilled amateur astronomer' is the appositive phrase providing more information about 'my brother.' When an appositive phrase contains commas, it can be set off using dashes to add additional emphasis.