1. big deal重要的事

It’s no big deal. I don’t mind helping you out.

这没什么大不了的，我不介意帮助你摆脱困境。

2. bottom line总之，归根结底

The bottom line is that our sales need to pick up if we’re going to make a profit this year.

总之，如果我们今年要盈利的话，销售量一定得增加。

3. give someone a break让某人松口气

The boss gave her a break and let her try again.

老板让她松口气，让她再试一次。

4. break a leg祝演出等成功（表面意思“摔断腿”的反话）

I know you are going to be great in the play tonight. Break a leg!

我知道你今天晚上的比赛会很成功。祝你顺利！

5. go for it去做吧！

Why not? Go for it?

为什么不呢？大胆的去做吧！