1 他人の注意を引くとき使う。(会話8)(会話9)(会話14) Used when one wants to ger attention of someone. 2 謝るとき使う。 (会話1)(会話4)(会話13) Used when one wants to apologize to someone. 3 感謝の意を表すとき使う。(会話4) Used to show that one is grateful for someone.