⑴ 如何用英語體面的解釋離職原因
體面的解釋離職原因，說明你和公司是和平分手，那麼最好的離職理由就是個人職業發展，本公司（業務范圍、組織架構等）已經不能滿足你的職業發展規劃(雖然你不想離開)，基本上就可以這么說了:
I'd like to pursue new opportunity because of my personal career plan. It will be my best memory for last ( ? 具體看你在此工作幾年了) years as (公司名) familiy members. We work together as a team, and help each other to solve the issue, achieve the same goal of success.
But I'd like to take more responsibility in the future, and I hardly see any chance to get it here.... 等等等，再發揮發揮。總之意思就是這里很好，但是已經不適合我了，才符合題主體面的意思。