con-, 强调。-grat, 感激，致意，词源同grateful, grace.

1. He was generous enough to congratulate his successor on his decision.

他十分大度地祝贺他的继任者做出了决定。

来自柯林斯例句

2. Waterstone has every reason to congratulate himself.

沃特斯通完全有理由为自己感到高兴。

来自柯林斯例句

3. She could not but congratulate him.

她只能祝贺他。

来自柯林斯例句

4. I should congratulate you that you resisted the temptation.

我应向你祝贺,你抗住了这种引诱.

来自《现代汉英综合大词典》

5. Listeners wrote in to congratulate the radio actor on his performance.

听众写信祝贺那位广播员的演技.

来自《现代英汉综合大词典》