为什么教师节是teacher's day而母亲节是mother's day

为什么教师节是teacher's day而母亲节是mother's day 教师节是Teachers’ Day还是Teacher’s Day? 教师节是teacher's day还是teachers' day 教师节的英文是Teacher's day or Teachers' day 教师节英文是teachers' day还是teacher's day 教师节是Teacher's Day还是Teachers' day 教师节是Teacher's Day还是Teachets' Day 教师节是可以写成”TEACHER'S dAY”吗? 在英语里面为什么教师节要用复数Teachers' day 是教师节 为什么要用复数形式为什么不用Teacher's day? 教师节快乐”用英文怎么说?是”happy teacher's day”还是”happy teacher day”? 英文的教师节怎么写是The Teacher's Day The Teachers' Day Teacher's Day 还是Teachers'Day 教师节英文怎么拼写教师节的英文怎么拼写?到底是teachers'day还是teacher's day? 教师节是Teacher's Day还是Teachers' day原因 教师节的英语到底是Teachers'Day还是Teacher's Day? 为什么教师节是 Teachers' Day 而 母亲节是 Mother's Day 怎么区分’s 和s' Sep.9th is （）（括号里填教师节）是添Teacher's Day还是...Sep.9th is （）（括号里填教师节）是添Teacher's Day还是teacher's day?（大写的问题） 今天是教师节,用英文怎么说：it's the teacher's day还是it's teacher's day.加不加the呢? 为什么母亲节是Mother‘s Day,而教师节是Teachers’Day?