形容词要加the，best是最高级，作副词时不加the；最高级前面一般都要加定冠词the,best 作为最高级前面也要加the,不加the也要加别的，比如说:my best friend。the best：最好的;最佳;最棒的

例句：

Those were the best years of my life.

那些年是我一生最幸福的时光。

It's only human to want the best for your children.

为自己的孩子谋求最好的条件是人之常情。

I just don't know what to do for the best.

我就是弄不清做什么才好。

It's the best job in the whole wide world.

这是整个大千世界中最好的工作。