This lesson explores English adverbs. While many adverbs end in '-ly' (e.g., quickly, slowly), many others don't (e.g., fast, often). Adverbs can be single words, two words, or even phrases (e.g., last week, in a very strange way). Their primary function is to describe other words in a sentence, most commonly verbs. For instance, in 'He speaks very loudly,' 'loudly' describes *how* he speaks. Adverbs can also modify verbs in other ways, providing additional information about the action or state being described (e.g., 'I kind of enjoyed it'). The lesson challenges viewers to identify five adverbs before explaining their diverse forms and uses.