having been done和done的区别：含义不同、用法不同。having been done是完成被动式、完成式、被动式、被动语态完成式、现在分词完成时的被动，强调时间先后；done可作形容词和动词，含义为完毕、结束、做、行动等，不强调时间先后。
一、having been done的含义及用法
having been done是完成被动式;完成式;被动式;被动语态完成式;现在分词完成时的被动。例句有：
1、In conclusion, the work having been done and being to be perfected are put forward.
本文最后总结了完成的工作，以及日后可以改进和完善的地方。
2、The work ( having been) done, he left the office.
做完工作后，他离开办公室。
3、There are two kinds of efforts having been done to solve the problem: one is using novel searching methods, such as Genetic algorithm, Simulated Annealing Algorithm etc;
解决问题的办法有两种：一是用新颖的搜索方法，如遗传算法，模拟退火算法等；
二、done的基本含义及用法介绍
1、作为形容词，意为完毕;了结;结束;煮熟;熟了;合乎礼仪;合乎规矩;得体。
例句：When you're done, perhaps I can say something.
等你说完，也许我可以说点什么。
The meat isn't quite done yet.
这肉还不太熟。
At school, it simply wasn't done to show that you cared for anything except cricket.
在学校里，除了板球外，你对什么都不感兴趣，这显然不对。
2、作为动词，意为做，干，办(某事);(以某种方式)做;行动;表现;(问询或谈论时用)进展，进行。
例句：I told you we should have done it my way!
我跟你说过我们原本应该用我的方法来做这事。
This is the way we've always done it.
我们一直是这样干的。
He knew I was energetic and dynamic and would get things done.
他知道我精力充沛、生气勃勃，会把事情办成的。
Children at school receive coloured stars for work well done.
学校里的孩子表现得好会得到彩色星星。
