Congratulations!
恭喜！

You won the champion? Congratulations and good for you!
你赢得了冠军？恭喜！你太厉害啦！
I heard that you will get married. Congratulations!
我听说你要结婚了。恭喜恭喜！
Congratulations and best wishes to your new baby!
衷心祝贺新生儿诞生，祝福他！
"Congratulations!"
“恭喜！”

快快发给好友，随学随用！