Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a week.”

True or false

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Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a week.”

True.

In the given example sentence, the phrase "which had been paved recently" is set off by two commas to indicate that it provides additional information but is not crucial to the meaning of the sentence. If we remove this phrase, the sentence still makes sense and conveys the main point: "The hardware store down the street is open until midnight five days a week."