I shall deam it a great appreciation if I can be helped with it.
多年以来我都认为在求人帮忙的情况下这是一个极为委婉的句型
本题又英语牛人团解答。
如果你能帮我这个忙我将不胜感激
I would be very grateful if you will help me
I should be very grateful if you do me a favour
口语化一点应该就是: I will really appreciate it, if you can do me this favor.
I would be most grateful if you could lend me a hand
If you can help me I shall be most grateful
If you can help me doing this job, I would be the grateful