Coniugazione del verbo inglese COULD STIFFEN

Verbo regolare: stiffen - stiffened - stiffened

Affermazione

Forma semplice

I could stiffen
you could stiffen
he could stiffen
we could stiffen
you could stiffen
they could stiffen

Forma con V-ing

I could be stiffening
you could be stiffening
he could be stiffening
we could be stiffening
you could be stiffening
they could be stiffening

Perfetto

I could have stiffened
you could have stiffened
he could have stiffened
we could have stiffened
you could have stiffened
they could have stiffened

Perfetto con V-ing

I could have been stiffening
you could have been stiffening
he 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 stiffen
you couldn't stiffen
he couldn't stiffen
we couldn't stiffen
you couldn't stiffen
they couldn't stiffen

Forma con V-ing

I couldn't be stiffening
you couldn't be stiffening
he couldn't be stiffening
we couldn't be stiffening
you couldn't be stiffening
they couldn't be stiffening

Perfetto

I couldn't have stiffened
you couldn't have stiffened
he 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 stiffening
you couldn't have been stiffening
he 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 he stiffen?
could we stiffen?
could you stiffen?
could they stiffen?

Forma con V-ing

could I be stiffening?
could you be stiffening?
could he be stiffening?
could we be stiffening?
could you be stiffening?
could they be stiffening?

Perfetto

could I have stiffened?
could you have stiffened?
could he 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 he 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 he 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 he 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 he 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 he have been stiffening?
couldn't we have been stiffening?
couldn't you have been stiffening?
couldn't they have been stiffening?

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