侧重商务:
I shall be most grateful if you will give me any help or advise I may need.
I shall appreciate any help you can give and will always be happy to reciprocate.
生活用语相对简单,只要语法正确基本上都是礼貌的,关键是要地道的:
Could you do me a small favor once in a while (as I need)? 时间状语自己调,不要亦无妨。
温馨提示:答案为网友推荐,仅供参考