sell -> продавать
Образование времен: Субъект подвергается (Пассив, или иначе страдательный залог)
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Факт - Simple
I/he/she/itwe/you/they
was soldwere sold
---
was not soldwere not sold
wasn't soldweren't sold
Ihe/she/itwe/you/they
am soldis soldare sold
---
am not soldis not soldare not sold
 isn't soldare'nt sold
I/he/she/it/we/you/they
will be sold
---
will not be sold
won't be sold
Процесс - Continuous
I/he/she/itwe/you/they
was being soldwere being sold
---
was not being soldwere not being sold
wasn't being soldweren't being sold
Ihe/she/itwe/you/they
am being soldis being soldare being sold
---
am not being soldis not being soldare not being sold
 isn't being soldare'nt being sold
Завершенность - Perfect
I/he/she/it/we/you/they
had been sold
---
had not been sold
hadn't been sold
I/we/you/theyhe/she/it
have soldhas sold
---
have not soldhas not sold
haven't soldhasn't sold
I/he/she/it/we/you/they
will have been sold
---
will not have been sold
won't have been sold
Вместо отсутствующих форм Perfect Continuous употребляются формы Perfect
sell -> продавать