This document discusses computer-assisted language learning. It defines an adverb clause as a group of words that functions as an adverb. It explains that adverb clauses modify verbs, adjectives, and other adverbs by telling why, when, where, how, how much, and how often an action occurs. Examples are provided to illustrate how adverb clauses modify verbs, adjectives, and other adverbs. The document also includes menus for material, exercises, tests, and quitting the program with the goal of language learning.