An adverb is a word used to tell more about a verb, and it almost always answers the questions how?, when?, where?, how often?, and in what way?. Words like slowly, loudly, carefully, quickly, quietly or sadly are all adverbs. Adverbs usually, but not always, end in -ly.

Examples of adverbs in a sentence (with the adverb in italics):

• How did the man walk? The man walked slowly.
• How did the dogs bark? The dogs barked loudly.

An adverb can also modify (describe) an adjective or another adverb

Examples:

• Adverb modifying a verb He writes well
• Adverb modifying another adverb: He writes very well
• Adverb modifying an adjective: He is very well