by the end,in the end,at the end,这些都怎么用？
请分别解释并造句，还要指出译文，谢谢

by the end (of)到。。。结束时，时间段概念，表示从从前的某一个时间点到某事结束。常用于完成时态。
By the end of this term, we will have learned 1000 words。
到本学期结束，我们就会学到1000个词了。
in the end 最后。在事情的最后。同意词 at last, finally
In the end, he returned the money to me.
最后，他还是把钱还给了我。
at the end 在。。。结束时。常和of连用。可以表示时间概念或地点概念。
At the end of the class, the teacher told us a joke.
在那节课最后，老师给我们讲了一个笑话。
Look, a boy is standing at the end of the street. He is waving to you.
看，一个男孩子正站在街的尽头。他正在向你摆手。
有时也表示过程。
At the end of the story, the man died and the woman went abroad. 故事最后，那个男人死了，女主人公出国了。