Comma in English | Easy Explanation with Examples | Punctuation Marks

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Comma or No Comma? Using Commas with Conjunctions

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Appositives add extra information about a noun, and when that information is not essential, it should be set off with commas. Example: My brother, a firefighter, lives in Texas. The appositive “a firefighter” gives us extra information about “my brother,” but the sentence still makes sense without it. That’s why we use commas. However: Author Alan Gratz wrote Refugee. Here, “Alan Gratz” identifies which author, so no commas are needed. Learning when to use appositives can make your writing clear

The Importance of the Oxford Comma in Writing

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