母亲节快乐的英语是Happy Mother's Day!

英式音标：

[ˈhæpɪ] [ˈmʌðə(r)z] [deɪ]

美式音标：

[ˈhæpɪ] [ˈmʌðərz] [de]

例句：

I wish you a happy Mother's Day!

祝您母亲节快乐!

This card comes from the whole family. Happy Mother's Day. 

这张卡片是我们全家合送的.祝您母亲节快乐.

Happy Mother's Day, and have a great weekend. 

祝妈妈们母亲节快乐！祝大家周末愉快！