介词+形容词，构成固定搭配，记住它的意思然后使用即可，不必追究为什么。

(1)go for broke 为短语动词 意思全力以赴; 孤注一掷

It was a sharp disagreement about whether to go for broke or whether to compromise.  

是放手一搏还是保守妥协，在这一问题上的分歧很尖锐。

But, with that cashback, why not go for broke?  

但是, 与卡, 为什么不能去打破?

I decided to go for broke and start my own business.  

我决定孤注一掷创办自己的公司.

He decided to go for broke in the coming race.  

他决定在即将到来的竞赛中竭尽所能.

He will go for broke hoping to fulfill his Olympic dream.  

他为了实现奥运梦,而全力以赴.

(2)for real严肃的，认真的; <美俗>真正的

The change in government is more for show than for real.  

政府的转变更多的是装装样子，而不是真的。

Is this guy for real?  

这家伙是来真的吗？

(3)for sure无疑; 准保

Even to this day we don't know what happened for sure.  

即使到现在我们也不确定究竟发生了什么。

You can't say for sure that it won't rain tomorrow.  

明天难保不下雨.

The fighting was over for sure.  

战斗确实结束了.