An adverb can modify a verb, an adjective, another adverb, a phrase, or a clause. An adverb indicates manner, time, place, cause, or degree and answers questions such as "how," "when," "where," "how much".

While some adverbs can be identified by their characteristic "ly" suffix, most of them must be identified by untangling the grammatical relationships within the sentence or clause as a whole. Unlike an adjective, an adverb can be found in various places within the sentence.

In the following examples, each of the highlighted words is an adverb:

In this sentence, the adverb "quickly" modifies the verb "made" and indicates in what manner (or how fast) the clothing was constructed.

Similarly in this sentence, the adverb "patiently" modifies the verb "waited" and describes the manner in which the midwives waited.