这里的for用作介词，意思是“关于”、“对于”、“就……而言”、“对……来说”。对某一餐吃什么都用介词for，另外还有for breakfast，for lunch。

for的用法

1.表目的、用途“为了……”

For our happiness, we must work hard .

为了我们的幸福，我们一定要努力工作。

2.表原因

They jumped for fear.

他们吓得跳起来。

3.表支持态度

So, are you for the project or against it?

所以这个计划，你是赞成还是反对？

4.表对象有强调的作用。

All of these is prepared for you.

所有这些都是为你而准备的。

5.表时间某一特定时间

For a time he was regard as a promising actor.

人们一度认为他是有希望的演员。

6.表方向朝……；开往……

They will head for the seaside for their holiday.

他们将去海边度假。

7.表距离

The road extends for miles and miles.

这条路向远处绵延伸展。

8.表代替、取代以……身份；意味着……

There is no substitute for experience.

经验是无可取代的。

for的常见短语

1.be in for it/be for it 惹上麻烦、势必倒霉；受罚

As I am in for it, I must proceed.

既然骑虎难下，我就一不做二不休。

2.for all 尽管，表让步

For all its faults, the film instantly became a classic.

尽管有缺陷，这部电影还是迅速成为了一部经典作品。

3.as for 至于、关于

AsforherengagementwithAdam,Iwouldsaytheportentsaregloomy.

至于她和亚当的婚约，我看兆头不妙。