father's day为什么不是fathers' day而儿童节就是children's day?

father's day为什么不是fathers' day而儿童节就是children's day? what's her father ( He's fat Father's Day翻译 father day’s happy! 是Father’s day 还是 the Father’s day father's Day is today dad ,happy father 's day Happy father＇s day Tom's father are short and fat.哪里错了 happy Children's Day 为什么不是happy Childrens“Day father's day还是fathers' day按照惯例来说father's day不太对吧? Mother's day is_________. Father's day is________Mother's day is_________.Father's day is_________.填日期 The History of Father's Day! 首字母填空Father's Day is c( ) Today is Father 's day.😌. The little girl goes to school on her father's bike every day.为什么用on What will you give your father on Father's Day? 关于序数词前的冠词用法Father's Day on____sunday of june the third 不是若序数词前有名词所有格时不用任何冠词吗?答案为什么不是 third?求大师啊