The particle で is used to indicate the place where an action occurs or the place where something is used.関西で「めっちゃ」を よく 使います。
動詞のた形 + らN4
This pattern is used to give advice or suggestions about what should be done when a certain condition occurs.関西に 行ったら、使って みてください。
動詞て形 + みるN4
Used to express the meaning of trying to do something.関西に 行ったら、使って みてください。
る-form verb + とN4
Used to express the meaning when/if doing something, then.... Often used to talk about the result that occurs when performing an action.気持ちを 強く 言うときに 便利です。