Пассивный залог (The Passive Voice)  используется, когда важнее отметить, что было сделано, чем кто это сделал, или когда исполнитель неизвестен.
My watch was stolen. (У меня украли часы) употребляется чаще, чем  Thieves stole my watch. (Воры украли мои часы.)
Если в предложении есть и прямое, и косвенное дополнение, то могут быть две пассивные формы:
She was given a bulldog. (Ей подарили бульдога.)
A bulldog was given to her. (Бульдог был подарен ей.
Обычно используется первое: She was given a bulldog.
Зная основную формулу пассива be + V3/Ved (Past Participle), легко получить выражение глагола в пассиве в любом времени.
Для этого нужно представить глагол be в нужном нам времени и добавить к нему интересующий нас глагол в форме  V3/Ved.
Рассмотрим на примере глагола do (did, done) (делать).

Present Simple: be (Present Simple) – is/ are/ am + done
It is done. They are done.
It is made of gold. (Оно делается из золота.)

Past Simple: be (Past Simple) – was/ were + done
It was done. They were done.
The house was built in 1953. (Дом был построен в 1953.)

Future Simple: be (Future Simple) – will be + done
It will be done.
He will be sent back to England. (Его отправят обратно в Англию.)

Present Continuous: be (Present Continuous) – is/ are/am being + done
It is being done. They are being done.
The film is being shown at the Odeon. (Фильм показывают в “Одионе”.)

Past Continuous: be (Past Continuous) – was/ were being + done
It was being done. They were being done.
He was being questioned at police headquarters. (Его допрашивали в полицейском управлении.)

Future Continuous: be (Future Continuous) – will be being + done
It will be being done.
At 9:00 tomorrow, he will be being interviewed. (Завтра в 9 утра у него будут брать интервью.)

Present Perfect Simple: be (Present Perfect Simple) – has/ have been + done
It has been done. They have been done.
Since then he has been seen in different countries. (С тех пор его видели в разных странах.)

Past Perfect Simple: be (Past Perfect Simple) – had been + done
It had been done.
The strike began after a worker had been sacked. (Забастовка началась после того, как работник был уволен.)

Future Perfect Simple: be (Future Perfect Simple) – will have been + done
It will have been done.
The project will have been finished by next month. (Проект закончат к следующему месяцу.)

Present Perfect Continuous: be (Present Perfect Continuous) – has/ have been being + done
It has been being done. They have been being done.
The lawns have been being mowed this way for 20 years. (Газоны косят таким способом в течении 20 лет.)

Past Perfect Continuous: be (Past Perfect Continuous) – had been being + done
It had been being done.
The restaurant’s fantastic dinners had been being prepared by Chef Jones for two years before he moved to Paris. (Эти фантастические ресторанные ужины готовились шефом Джонсом в течение двух лет, перед тем как он переехал в Париж.)

Future Perfect Continuous: be (Future Perfect Continuous) – will have been being + done
It will have been being done.
By the time it arrives, this meal will have been being waited for for thirty minutes. (К тому времени как это блюдо принесут, его будут ждать уже в течении получаса.)