* Adverb clauses modify verbs, adjectives, or other adverbs, providing information about how, when, where, why, or to what extent something happens. They are typically introduced by subordinating conjunctions like *because, although, since, while, if, when, where, how, etc.*
* "As you" is a prepositional phrase. It's a combination of the preposition "as" and the pronoun "you". Prepositional phrases act as adjectives or adverbs, but they don't have the same structure or function as adverb clauses.
Examples:
* Adverb Clause: *Because it was raining,* we stayed inside. (*Because* introduces the adverb clause modifying the verb "stayed".)
* Prepositional Phrase: *As you can see,* the problem is clear. (*As you* acts as an adverb modifying the verb "see".)
Let me know if you have any other grammar questions!