The next day 是指定日期的隔天:
I will see you the next day of tomorrow.
明天的隔天也就是后天,我去看你!
next day 是不指定日期的隔天:
I will see you sometime after event or next day.
在活动之后的某个时间或隔天,我去看你!
the next day 是过去时态中用于指出过几天
he said he would like to finish the job the next dayl.
next day 是用于将来时态.
I will finish the job next day.
望采纳
the
next
day起点是过去某一天之后的第二天
next
day是从现在开始的下一天相当于tomorrow