Read and study the sentences.
Adverbs also have degrees of comparison like adjectives. They are positive, comparative, and superlative.
When an adverb makes no comparison, it is in the positive degree.
Examples: The words early and well in the above sentences.
When the adverb compares two verbs or actions, it is in the comparative degree.
Examples: The words earlier and better in the above sentences.
When an adverb compares three or more verbs, it is in the superlative degree.
Examples: The words earliest and best in the above sentences.