Adverbs are words that modify verbs, adjectives, or other adverbs, providing more detail about how, when, where, or to what extent something happens. For example, in the sentence "She runs quickly," the adverb "quickly" tells us how she runs. Adverbs can also describe adjectives, as in "He is very tall," where "very" emphasizes the height. There are different types of adverbs, including adverbs of manner, time, place, and degree. For instance, "tomorrow" is an adverb of time, indicating when something will happen, while "here" is an adverb of place, showing where an action takes place. Understanding adverbs helps make sentences clearer and more descriptive.