（原创文章，转载请注明来源“秀哈英语”） 时态含义
表示某一动作开始于过去某一时间，延续或重复地出现至今，或将继续延续至将来。
肯定句式have/has been doing
主语第一人称
（单数）
I have been doing
（复数）
We have been doing
主语第二人称
（单复数）
You have been doing
主语第三人称
（单数）
She has been doing
He has been doing
It has been doing
Lily has been doing
Tom has been doing
My mom has been doing
Your uncle has been doing
The dog has been doing
（复数）
They have been doing
