6)过去进行时：was / were being done
①The workers were mending the road.
The road was being mended.
②This time last year we were planting trees here.
Trees were being planted here this time last year.
7)现在完成时：have / has been done
①Someone has told me the sports meeting might be put off.
I have been told the sports meeting might be put off.
②He has brought his book here.
His book has been brought here.
8)过去完成时：had been done
①When I got to the theatre, I found they had already sold out the tickets.
When I got to the theatre, I found the tickets had already been sold out.
② The whole country was very sad at the news of his death; people had considered him to be a great leader.
The whole country was very sad at the news of his death; he had been considered to be a great