Happy the last Children's Day!你好！可以这样说吗？如：We wish all the students lastJune 1 Children's dayhappiness!We wish all the students the last June 1st Children's Day happiness!对了，为什么后面happiness!后面把y变i ?y前面不是元音时，变形就要变成i，然后再加后缀能否说的更清楚些，那为什么不用原形 happy ?wish sb. n. 这是固定结构。例如：Wish you health!祝你健康。