Coniugazione del verbo inglese COULD STIFFEN
Verbo regolare: stiffen - stiffened - stiffened
Affermazione
Forma semplice
I could stiffenyou could stiffen
she could stiffen
we could stiffen
you could stiffen
they could stiffen
Forma con V-ing
I could be stiffeningyou could be stiffening
she could be stiffening
we could be stiffening
you could be stiffening
they could be stiffening
Perfetto
I could have stiffenedyou could have stiffened
she could have stiffened
we could have stiffened
you could have stiffened
they could have stiffened
Perfetto con V-ing
I could have been stiffeningyou could have been stiffening
she could have been stiffening
we could have been stiffening
you could have been stiffening
they could have been stiffening
Negazione
Forma semplice
I couldn't stiffenyou couldn't stiffen
she couldn't stiffen
we couldn't stiffen
you couldn't stiffen
they couldn't stiffen
Forma con V-ing
I couldn't be stiffeningyou couldn't be stiffening
she couldn't be stiffening
we couldn't be stiffening
you couldn't be stiffening
they couldn't be stiffening
Perfetto
I couldn't have stiffenedyou couldn't have stiffened
she couldn't have stiffened
we couldn't have stiffened
you couldn't have stiffened
they couldn't have stiffened
Perfetto con V-ing
I couldn't have been stiffeningyou couldn't have been stiffening
she couldn't have been stiffening
we couldn't have been stiffening
you couldn't have been stiffening
they couldn't have been stiffening
Forma interrogativa
Forma semplice
could I stiffen?could you stiffen?
could she stiffen?
could we stiffen?
could you stiffen?
could they stiffen?
Forma con V-ing
could I be stiffening?could you be stiffening?
could she be stiffening?
could we be stiffening?
could you be stiffening?
could they be stiffening?
Perfetto
could I have stiffened?could you have stiffened?
could she have stiffened?
could we have stiffened?
could you have stiffened?
could they have stiffened?
Perfetto con V-ing
could I have been stiffening?could you have been stiffening?
could she have been stiffening?
could we have been stiffening?
could you have been stiffening?
could they have been stiffening?
Forma interro-negativa
Forma semplice
couldn't I stiffen?couldn't you stiffen?
couldn't she stiffen?
couldn't we stiffen?
couldn't you stiffen?
couldn't they stiffen?
Forma con V-ing
couldn't I be stiffening?couldn't you be stiffening?
couldn't she be stiffening?
couldn't we be stiffening?
couldn't you be stiffening?
couldn't they be stiffening?
Perfetto
couldn't I have stiffened?couldn't you have stiffened?
couldn't she have stiffened?
couldn't we have stiffened?
couldn't you have stiffened?
couldn't they have stiffened?
Perfetto con V-ing
couldn't I have been stiffening?couldn't you have been stiffening?
couldn't she have been stiffening?
couldn't we have been stiffening?
couldn't you have been stiffening?
couldn't they have been stiffening?