他们没能做到英文怎么说

在中文中，可以使用 "他们没能做到" 来表示 "they didn't manage to" 或者 "they were unable to" 的意思。

这个短语的来源是源于英语中的动词 "manage"，它的意思是 "to succeed in doing something, especially after trying hard"。例如：

I managed to finish the project on time. (我设法按时完成了项目。)
They didn't manage to catch the last train. (他们没能赶上最后一班火车。)

"Unable" 也是一个常用的动词，它的意思是 "not having the abipty, power, or knowledge to do something"。例如：

She was unable to pft the heavy box. (她没有能力举起那个重盒子。)
He was unable to solve the math problem. (他没有能力解决那道数学题。)

因此，"他们没能做到" 就可以用来表示 "they didn't manage to" 或 "they were unable to" 的意思。