Respuesta :

An adverb is a verb or adjective with the added suffix "ly". For example: happily, quickly, deadly, slowly.

adverbs used to describes things would be, for example:
Loudly, "He sings so loudly, all the windows shatter."
or 
Fortunately, "Fortunately, I brought a sombrero"

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Answer:

An adverb is a word that describes a verb. Just like adjectives, adverbs are used to add detail to a sentence. More specifically, adverbs tell us how, when, or where something happened. In the example above, the word deeply describes how he was staring, so deeply is an adverb.

Explanation: