这些词或词组均含有“最后，终于”之意。
at last ：多指经主观努力，克服各种困难后才终于达到目的。
- At last we're home!
我们终于到家了！ - At long last the cheque arrived.
支票终于到了。
at length ：强调经历一段长时间后终于完成，侧重在时间部分。
- At length my father went into the house.
我父亲最后还是进了屋。
eventually ：侧重于动作或行为的结果。
- Our flight eventually left five hours late.
我们的班机最终晚了五个小时起飞。 - Eventually, the army caught up with him in Latvia.
最终，大部队在拉脱维亚赶上了他。
finally ：常与at last换用，都可用于对往事的描述，但finally不带感情色彩，指一系列事情的最后结局。
- The performance finally started half an hour late.
晚了半小时以后演出终于开始了。 - I finally managed to get her attention.
我终于设法引起了她的注意。
in the end与at last同义，但in the end不仅可指“过去”还可表示对“未来”的预计。
- He tried various jobs and in the end became an accountant.
他尝试过各种各样的工作，最后当上了会计。 - You can try your best to impress the interviewers but in the end it's often just a question of luck.
你可以尽最大的努力给面试者留下深刻的印象，不过最终常常只是视乎运气。
lastly ：指连续顺序的最后，通常用在列举事情的场合。
- Lastly, I'd like to ask you about your plans.
最后，我想问一下你们的计划。 - They wash their hands, arms and faces, and lastly, they wash their feet.
他们洗了手、胳膊和脸，最后脚也洗了。
