Here's a breakdown:
* Verbs: They tell us how, when, where, why, or to what extent an action is performed.
* Example: "The cat slept on the window sill." (modifies the verb "slept")
* Adjectives: They provide more information about an adjective.
* Example: "The cat is extremely fluffy." (modifies the adjective "fluffy")
* Other adverbs: They give more detail about an existing adverb.
* Example: "The cat slept very peacefully." (modifies the adverb "peacefully")
Key point: Adverbial phrases usually answer questions like:
* How?
* When?
* Where?
* Why?
* To what extent?
Let me know if you'd like more examples or have other questions!