passive voice has 3 tenses
present=is/am/are +pp
past=was/were +pp
future=will be +pp
Sometimes it has 'by' or something to deteat
But when there is no 'by' or others , how can I deteat it?
Eg. Next month, I will be rewarded the Long Service Award.
He soon was released.’ I couldn't help myself laughing after I
had heard the story.