はじめまして
はじめまして 【初めまして 】(It's very ) nice [How nice, (I'm very ) glad ] to ↘meet you . / ⦅丁寧 ⦆It's a great pleasure [What a pleasure, (I'm very ) pleased ] to meet you . (!(1 ) How do you do, Mr. A? を交換し合う言い方は古めかしい感じがするので今はまれ. (2 ) 日本語式に ╳This is the first time I have seen you. とはいわない. (3 ) これに対する応答は (It's ) nice [(I'm ) pleased ] to meet you, too. とか, ↘My pleasure. となる )