Adverbs are words used to describe actions. They give additional information about when, how, and where something is happening. Use adverbs to make your writing more precise and interesting.
She spoke yesterday. (when)
She spoke quickly. (how)
She spoke here. (where)
Some adverbs are used to compare different actions.
I can run fast. She can run faster. He can run the fastest.
I spoke well. She spoke better. He spoke the best.