Conjugação do verbo inglês
COULD KNELL

Verbo regular: knell - knelled - knelled

Afirmação

Forma simple	Forma com V-ing
I could knell you could knell he could knell we could knell you could knell they could knell	I could be knelling you could be knelling he could be knelling we could be knelling you could be knelling they could be knelling
Perfeito	Perfeito com V-ing
I could have knelled you could have knelled he could have knelled we could have knelled you could have knelled they could have knelled	I could have been knelling you could have been knelling he could have been knelling we could have been knelling you could have been knelling they could have been knelling

Negação

Forma simple	Forma com V-ing
I couldn't knell you couldn't knell he couldn't knell we couldn't knell you couldn't knell they couldn't knell	I couldn't be knelling you couldn't be knelling he couldn't be knelling we couldn't be knelling you couldn't be knelling they couldn't be knelling
Perfeito	Perfeito com V-ing
I couldn't have knelled you couldn't have knelled he couldn't have knelled we couldn't have knelled you couldn't have knelled they couldn't have knelled	I couldn't have been knelling you couldn't have been knelling he couldn't have been knelling we couldn't have been knelling you couldn't have been knelling they couldn't have been knelling

Forma interrogativa

Forma simple	Forma com V-ing
could I knell? could you knell? could he knell? could we knell? could you knell? could they knell?	could I be knelling? could you be knelling? could he be knelling? could we be knelling? could you be knelling? could they be knelling?
Perfeito	Perfeito com V-ing
could I have knelled? could you have knelled? could he have knelled? could we have knelled? could you have knelled? could they have knelled?	could I have been knelling? could you have been knelling? could he have been knelling? could we have been knelling? could you have been knelling? could they have been knelling?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I knell? couldn't you knell? couldn't he knell? couldn't we knell? couldn't you knell? couldn't they knell?	couldn't I be knelling? couldn't you be knelling? couldn't he be knelling? couldn't we be knelling? couldn't you be knelling? couldn't they be knelling?
Perfeito	Perfeito com V-ing
couldn't I have knelled? couldn't you have knelled? couldn't he have knelled? couldn't we have knelled? couldn't you have knelled? couldn't they have knelled?	couldn't I have been knelling? couldn't you have been knelling? couldn't he have been knelling? couldn't we have been knelling? couldn't you have been knelling? couldn't they have been knelling?