This paper suggests an effective teaching method for international students who are expected to improve their communication skills by themselves after a certain period of language study. The purposes of this method for learners are threefold: 1) to acquire verbal and nonverbal communication skills to exchange information correctly, 2) to understand a concept that there is a flow of a conversation, and 3) to gain an ability to analyze the flow of a conversation. We use two components consisting of the conversation flow, "DANWA-KOHSEI-YOHSO," "KYOWA-SOKUSHIN-YOHSO." Then, we introduce "a conversation quiz" as a way to practice this teaching method.