I would appreciate it if you lend me some money.
如果你借我点钱，我会很感激的。
I would appreciate it if you help me carry the big bag upstairs.
如果你能帮我把这个大袋子抬上楼，我会很感激的。
I would appreciate it if you can explain that question to me again.
如果你再给我解释一下那个问题，我会很感激的。