not to mention 更不用说;此外还有

例句：

He has two big houses in this country,not to mention his villa in France.

他在这个国家有两个大房子，更不用说他在法国的别墅了。

We can't afford a car,not to mention the fact that we don't have a garage.

我们买不起汽车，没有车库的事就更不用说了。

A:I really need your help.

我真的需要你的帮忙。

B:Go straight.

直说吧。

A:I got dumped by Mary, and I know that you are one of her best friends, so..

我被玛丽甩了，我知道你是她最好的朋友之一，所以……B:Sorry, I'm busy now, I haven't finished my paper yet, not to mention your stupid thing.

对不起，我现在很忙，我论文还没写完，更不用说你那些愚蠢的事情。

背景音乐：

Usher — papers