Final answer:
Adverbs describe how, when, and where actions take place and modify verbs, adjectives, and even other adverbs.
Step-by-step explanation:
Adverbs are words that describe how, when, and where actions take place. They modify verbs, adjectives, and even other adverbs.
Certain adverbs end in -ly such as quickly or suddenly. For example, in the sentence Pierre quickly ran through the main points, the adverb quickly describes how Pierre ran.
Adverbs are important in adding detail and meaning to sentences, but it is recommended to use them sparingly to let the subjects and verbs carry the main message.