excuse -> извиняться
Образование времен: Субъект подвергается (Пассив, или иначе страдательный залог)
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Факт - Simple
I/he/she/itwe/you/they
was excusedwere excused
---
was not excusedwere not excused
wasn't excusedweren't excused
Ihe/she/itwe/you/they
am excusedis excusedare excused
---
am not excusedis not excusedare not excused
 isn't excusedare'nt excused
I/he/she/it/we/you/they
will be excused
---
will not be excused
won't be excused
Процесс - Continuous
I/he/she/itwe/you/they
was being excusedwere being excused
---
was not being excusedwere not being excused
wasn't being excusedweren't being excused
Ihe/she/itwe/you/they
am being excusedis being excusedare being excused
---
am not being excusedis not being excusedare not being excused
 isn't being excusedare'nt being excused
Завершенность - Perfect
I/he/she/it/we/you/they
had been excused
---
had not been excused
hadn't been excused
I/we/you/theyhe/she/it
have excusedhas excused
---
have not excusedhas not excused
haven't excusedhasn't excused
I/he/she/it/we/you/they
will have been excused
---
will not have been excused
won't have been excused
Вместо отсутствующих форм Perfect Continuous употребляются формы Perfect
excuse -> извиняться