If you congratulate someone, you say something to show you are pleased that something nice has happened to them.
例句
She congratulated him on the birth of his son...她祝賀他喜得貴子。I was absolutely astonished by the reaction to our engagement. Everyone started congratulating us.大家對我們訂婚的反應讓我非常驚訝。所有人都開始祝賀我們。
VERB
表揚；稱贊
If you congratulate someone, you praise them for something good that they have done.
例句
I really must congratulate the organisers for a well run and enjoyable event...活動安排得有條不紊，充滿樂趣，我必須要稱贊一下組織者。We specifically wanted to congratulate certain players.我們特別想表揚幾名選手。
VERB
為(自己)感到高興(或自豪）
If you congratulate yourself, you are pleased about something that you have done or that has happened to you.
例句
Waterstone has every reason to congratulate himself...沃特斯通完全有理由為自己感到高興。Journalists have been congratulating themselves on the role the press has played in the investigations.記者們為新聞界在調查中所起的作用感到自豪。
英漢詞典釋義
vt.
向（某人）道賀；祝賀
He is to be congratulated for his success.他將會由于取得的成就而受到祝賀。
英英詞典釋義
Verb
1. say something to someone that expresses praise;
"He complimented her on her last physics paper"
2. express congratulations
3. be proud of;
"He prides himself on making it into law school"
4. pride or congratulate (oneself) for an achievement