1) The workers built this building last year.
This building was built by the workers last year.
2) I have read the book for two weeks.
The book has been read by me for two weeks.
3) My father painted the walls of my room yesterday.
The walls of my room were painted by my father yesterday.
4) We have written a dictation today.
The dictation has been written today. (by us).
5) My uncle has bought a new car recently.
A new car has been bought by my uncle recently.
1) The workers built this building last year.
This building was built by the workers last year.
2) I have read the book for two weeks.
The book has been read by me for two weeks.
3) My father painted the walls of my room yesterday.
The walls of my room were painted by my father yesterday.
4) We have written a dictation today.
The dictation has been written today. (by us).
5) My uncle has bought a new car recently.
A new car has been bought by my uncle recently.