Congratulations!(CHAPTER 1)

To express hopes and wishes to others and congratulate others for their fortune and achievement, in order to keep good personal relationship with them.

Example :
Lina has got the result of her math test. She is waiting for the result of her English test. Dayu congratulates her for the result of the math test and hope that she will get an A for the English test too.
The conversation :
Lina   : “Thank God, I got an A for my Math test.
            But, I’m not sure of the result of my English test.
Dayu : ” Congratulations for the result of your Math test.
              I hope you will get an A for the English test too”