母亲节是“Mother’s Day” or “Mothers’ Day”?Why?

母亲节是“Mother’s Day” or “Mothers’ Day”?Why? 母亲节究竟是Mother's Day 还是Mothers' Day 母亲节是mothers' day 还是mother's day?教师节呢?帮解答一下,谢谢 请问母亲节的英文到底是Mother’s Day 还是Mothers’ Day? 母亲节快乐用英语是happy mother's day还是happy mothers' day 母亲节快乐正确的是happy mother's day 还是happy mothers' day? 为什么母亲节的名词所有格是mother 's day而不是mothers ' day? 母亲节的英语是mothers'day还是mother'sday 父亲节的英语父亲节,母亲节,用英语怎么表达?是Mother's Day还是Mothers' Day最好说理由 母亲节Mother's day 母亲节Mother's Day? 母亲节可以Mothers'Day?