in the end by the end at the end of有什么区别？

in the end =at last = finally, 表时间, "最后" at the end of the road, 表地点, "在路的尽头" at the end of the class, at the end of the day, 表时间, "在要下课的时候", "在一天要结束的时候" by the end of next week, 表时间, 后跟将来时间, 用将来时态. we will finish the project by the end of next week. 我们将在下周末完成这个方案. by the end of last year , 表时间, 后跟过去时间, 用过去完成时态. We had learnt 20 English songs by the end of last year. 到去年底为止, 我们已经学了20首英文歌.

in the end一般单独使用，放置句子前后，相当finally，by the end 后可接时间，和过去的时间连用时，构成过去完成时，at the end 后可接时间和地点，一般用于一般过去式和一般将来时。