do his best

• conj. 竭尽所能(尽力)

do his best的用法和样例：

例句

1. One should do his best for the cause of world peace.
   一个人应该为世界和平事业尽最大努力。
2. We can't blame him: he did his best according to his lights.
   我们不能责怪他，他已尽力而为了。
3. He do his best to further the interest of his state.
   他竭尽所能增进他那个州的利益。