happy的名词形式：happiness；happiness是不可数名词也是抽象名词,是没有复数的。
happy：
adj.感到(或显得)快乐的;高兴的;给予(或带来)快乐的;使人高兴的;幸福的;表示祝愿，如Happy Birthday生日快乐、Happy New Year新年好等。
扩展资料
She had a happy childhood.
她有一个幸福的童年。
The happy couple were toasted in champagne.
人们举起香槟酒为这对幸福的伉俪干杯。
Main Street wont be happy with this new program.
中产阶级不会对这个新计划感到高兴的。
Happy New Year to one and all!
祝各位新年快乐！
I said Id go just to keep him happy.
我说过我要去只是为了让他高兴。
