forget -> забывать
Образование времен: Субъект подвергается (Пассив, или иначе страдательный залог)
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Факт - Simple
I/he/she/itwe/you/they
was forgottenwere forgotten
---
was not forgottenwere not forgotten
wasn't forgottenweren't forgotten
Ihe/she/itwe/you/they
am forgottenis forgottenare forgotten
---
am not forgottenis not forgottenare not forgotten
 isn't forgottenare'nt forgotten
I/he/she/it/we/you/they
will be forgotten
---
will not be forgotten
won't be forgotten
Процесс - Continuous
I/he/she/itwe/you/they
was being forgottenwere being forgotten
---
was not being forgottenwere not being forgotten
wasn't being forgottenweren't being forgotten
Ihe/she/itwe/you/they
am being forgottenis being forgottenare being forgotten
---
am not being forgottenis not being forgottenare not being forgotten
 isn't being forgottenare'nt being forgotten
Завершенность - Perfect
I/he/she/it/we/you/they
had been forgotten
---
had not been forgotten
hadn't been forgotten
I/we/you/theyhe/she/it
have forgottenhas forgotten
---
have not forgottenhas not forgotten
haven't forgottenhasn't forgotten
I/he/she/it/we/you/they
will have been forgotten
---
will not have been forgotten
won't have been forgotten
Вместо отсутствующих форм Perfect Continuous употребляются формы Perfect
forget -> забывать