"尽最大努力" 的英文表达为 "do one's best"。它的来源源于英语的一个俗语 "try one's best"，后来逐渐缩短为 "do one's best"。

例句：

I will do my best to help you. (我会尽最大努力帮助你。)

She always does her best in everything she does. (她做任何事情都会尽最大努力。)

We should all do our best to make the world a better place. (我们都应该尽最大努力让世界变得更美好。)