I have already read the book.
He has already studied English for 5 years.
They have already used the machinc for a few days.
We have already solved the problem.
She has already known the news.
They have already been engaged for a year.
Tom and Jane have already been married for 6 years.
We have already been warned not to go there.
The girl has already finished her homework.
The old building has already been pulled down.
I have taught English since I graduated from the university.
It is three years since he left.
They have been good friends since they went to college.
The river have been polluted since the factory was built here.
We have lived here since last year.