I wonder if you could help me.

我可以请你帮个忙吗？

I need to ask a favor.

我可以请你帮个忙吗？

I hate to complain,but...

我实在很不愿意抱怨,但……

What can I do for you?

有什么我可以帮忙的？

I hate to say this,but...

我实在很不愿意这么说……但

I'm not happy with my room.

我不满意我的房间。

Are you happy with your new car?

你满意你的新车吗？

I'll see what I can do.

我会帮你处理这个问题。

I'll get right on it.

我会马上处理。

I'll look into it right away.

我会马上处理。