Warming Up, in which vocabulary and expressions used in real situations are introduced, Pattern Practice, in which each unit's key expressions are introduced, Key Grammatical Patterns, in which selected grammatical patterns from the main dialogue are explained, Conversation Practice, in which learners practice substituting vocabulary and expressions using given model dialogue, and Task 1 (Speaking), Task 2 (Reading & Writing), and Task 3 (Listening), through which the material studied in each un