at the end和in the end的区别是什么

at the end表示在……末尾、在……尽头
　　He will take up his post as the head of the civil courts at the end of next month.
　　他将在下个月底就任民事法庭庭长一职。
　　in the end是指最后、终于

　　In the end, I left them all behind.
　　最后，我把它们都留在了那里。

in the end 相当于 at last, finnaly, 是副词,意思是"最后,最终,终于"如:
In the end, she found the solution to the problem. (最后,她找到了解决这个问题的方法.)
at the end通常后边要跟上其它成分,即完整的形式是: at the end of sth,意思是"在...的末尾,在...结束的时候",如:
At the end of the month, she finished the task. (在月末的时候,她完成了任务.)