The document discusses different types of adverb clauses. It provides examples of clauses that use conjunctions like "as", "as though/if", "as...as", and "so...as" to compare amounts or degrees. These clauses answer questions like "how much?" or "how little?". The document also gives examples of clauses introduced by "as", "as if", and "as though" that use the subjunctive verb form. Finally, it asks the reader to identify the adverb clauses in three example sentences and state their meanings.