for several years用于什么时态
for several years用于多种时态。
例如：
She has been here for several years.
We were lovers for several years.
This work had absorbed him for
several years.
At that time they had been courting for several years.
The project had hung fire for several years for lack of
funds.
He taught for several years before becoming a writer.
I had lived two doors away from this family for several years.
She has kept up physical training for several years without interruption.
I've been doing this for several
years.
She had endured great pain for
several years.
For several years， she worked two
full-time jobs.
But that will not become clear for several years.
The dispute is likely to drag on for several years.
It seems the stove hasn't been washed for several years.
