Mother's Day is ( )the second Sunday in May 空里是一个冠词 谢谢

Mother's Day is ( )the second Sunday in May 空里是一个冠词 谢谢
Mother's Day is ( )the second Sunday in May 空里是一个冠词 谢谢

Mother's Day is ( )the second Sunday in May 空里是一个冠词 谢谢
on“在具体某一天”
用in一般“上”“下”“晚,in用于月、季、年.
at是个时间点,“工作”“时刻”与“圣诞”at noon（night）
例 On mother's Day,we should send flowers to our mother.母亲节,我们应该送花给我们的母亲.

on
跟星期几搭配的词就是on
例如 on Monday 等等

om

on