congratulation的形容词是congratulatory，意为：祝贺的;恭贺的
双语例句
1. Scores of congratulatory telegrams and letters greeted Franklin on his return.
富兰克林一回来，就收到了好几十封贺电和贺信。
2. He sent Kim a congratulatory letter.
他给金发了一封贺信。
3. The waitress brings over some congratulatory glasses of champagne, courtesy of the restaurant
女侍者端来几杯饭店赠送的用来庆祝的香槟。
4. They fell a lack of warmth in his exceeding formal congratulatory speech.
他们感到他那过于刻板的祝词缺乏热情。
5. The two heads of state also exchanged congratulatory messages on the 50th anniversary of diplomatic relations.
两国元首还就建交五十周年互致贺电。
6. The "likes" and congratulatory tweets will feel very satisfying.
微博上的“顶”和鼓励的话会让他们很有满足感。
congratulation形容词形式 扩展
congratulation作名词时，表示祝贺,恭喜的意思
作动词时，是祝贺的意思，没有形容词形式
