要大写。
1、新年快乐的大写：Happy New Year.
2、读音：英 [ˈhæpi njuː jɪə(r)]，美 [ˈhæpi nuː jɪr]。
3、释义：n.新年快乐；新年好。
4、例句
Then, on New Year's Day , you come again to wish him a happy New Year.
等一转过年来, 你再去拜个年,讨他个喜欢.
As soon as he came in the two women wished him a happy New Year.
他进了屋,两位妇女立刻给他拜年.
Please accept our wishes for you and yours a happy New Year.
请采纳我们对你及你举家的美好祝福,祝你们新年高兴.
May you a happy new year, good health, happiness and good luck.
祝大家新年快乐、身体健康、阖家幸福、万事如意!
Season's greetings and warmest wishes a bright and happy New Year!
谨个充满生机欢乐新年致以节日问候温馨祝福.
Wish you a happy New Year and the best of everything!
祝你新年快乐,万事如意!
Season's greetings and warmest congratulations a bright and happy new year!
谨在灿烂美好的新年致以节日的问候和诚挚的祝贺!
Finally, give the best blessing to everyone Happy New Year!
最后, 把最好的祝福送给大家,新年快乐!
happy new year
新年快乐
happy new year本回答被网友采纳