I'll appreciate it very much if you could help me(或lend me a hand).
it作形式宾语,指代“你帮我”这件事
I would very appreciate it if you can help me .
i would appreciate it if ……这个句型我们刚刚复习了,表示,如果……我将不胜感激。
I'll appreciate it very much if you could help me.
i will be very appreciated if you can help me