A congratulation card Sample analysis People often write and send a congratulation card to congratulate people on such joyful occasions as celebrating one's promotion,wedding,birthday, graduation,etc.Congratulation cards are also exchanged on holidays.The language used in a congratulation card usually sounds courteous and complimentary.People often write and send a congratulation card to congratulate people on such joyful occasions as celebrating one’s promotion, wedding, birthday, graduation, etc. Congratulation cards are also exchanged on holidays. The language used in a congratulation card usually sounds courteous and complimentary. Sample analysis A congratulation card