use -> использовать
Образование времен: Субъект подвергается (Пассив, или иначе страдательный залог)
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Факт - Simple
I/he/she/itwe/you/they
was usedwere used
---
was not usedwere not used
wasn't usedweren't used
Ihe/she/itwe/you/they
am usedis usedare used
---
am not usedis not usedare not used
 isn't usedare'nt used
I/he/she/it/we/you/they
will be used
---
will not be used
won't be used
Процесс - Continuous
I/he/she/itwe/you/they
was being usedwere being used
---
was not being usedwere not being used
wasn't being usedweren't being used
Ihe/she/itwe/you/they
am being usedis being usedare being used
---
am not being usedis not being usedare not being used
 isn't being usedare'nt being used
Завершенность - Perfect
I/he/she/it/we/you/they
had been used
---
had not been used
hadn't been used
I/we/you/theyhe/she/it
have usedhas used
---
have not usedhas not used
haven't usedhasn't used
I/he/she/it/we/you/they
will have been used
---
will not have been used
won't have been used
Вместо отсутствующих форм Perfect Continuous употребляются формы Perfect
use -> использовать