（原创文章，转载请注明来源“秀哈英语”） 时态含义
表示就过去某一时间而言，将来某一时刻之前一直在进行的动作，是否继续下去，应视上下文而定。
例句
They said that by the end of the following month, they would have been doing the project for 3 years.
他们说到第二个月底为止，他们已经不停地做这项工程满3年了。
肯定句式would have been doing
1、主语第一人称
（单数）
I would have been doing....
（复数）
We would have been doing....
2、主语第二人称
（单、复数）
You would have been doing....
3、主语第三人称
（单数）
She would have been doing....
He would have been doing....
Lily would have been doing....
Tom would have been doing....
My mom would have been doing....
Your uncle would have been doing....
It would have been doing....
The dog would have been doing....
（复数）
They would have been doing....
