建议改成So every one of you has a nice day !
按照你的意思,应该翻译成,Well ,wish each of you may have a nice day!这个 不需要改has ?因为加了情态动词May因此动词保持原型如果 非得按原句 您帮我看看 原句哪里需要改动So,may every one of you a nice day!既简洁语法又正确