happy day可以单用吗

可以，happy day意思是：祝你有快乐的一天！一般用来道别用。例句：Oh,happy day!I made it!啊，真是愉快的一天！我成功了！happy意思是adj.幸福的；快乐的。day的意思是n.一天；白天；时期。

1、happy good day幸福的好日子 ; 幸福美好的一天

2、Happy one day开心一天 ; 快乐一天

3、Happy summer day开心暑假的一天

4、How happy one day多么开心的一天

5、Happy sunny day幸福最晴天

It's also a happy day, isn't it?

这也是一个高兴的日子，是不是？

Give my husband an old motorbike to tinker with and he's as happy as the day is long.

给我丈夫一辆老式摩托车鼓捣，他会很高兴的。

Well, l certainly call her to say "Happy Mother's Day" and promise that I will visit home soon.

好吧,我当然会打电话给她说"母亲节快乐",并保证我会很快回家。