WHAT IS AN ADVERB?

An adverb can be added to a verb to modify its meaning. Usually, an adverb tells you when, where, how, in what manner or to what extent an action is performed. Very many adverbs end in '...ly' - particularly those that are used to express how an action is performed.

An adverb is a part of speech that changes the meaning of verbs or any part of speech other than nouns (modifiers of nouns are primarily adjectives and determiners). Adverbs can modify verbs, adjectives (including numbers), clauses, sentences, and other adverbs.

Adverbs typically answer questions such as how?, in what way?, when?, where?, and to what extent?. This function is called the adverbial function, and is realized not just by single words (i.e., adverbs) but by adverbial phrases and adverbial clauses.