Conjugação do verbo inglês COULD ALTER

Verbo regular: alter - altered - altered

Afirmação

Forma simple

I could alter
you could alter
he could alter
we could alter
you could alter
they could alter

Forma com V-ing

I could be altering
you could be altering
he could be altering
we could be altering
you could be altering
they could be altering

Perfeito

I could have altered
you could have altered
he could have altered
we could have altered
you could have altered
they could have altered

Perfeito com V-ing

I could have been altering
you could have been altering
he could have been altering
we could have been altering
you could have been altering
they could have been altering

Negação

Forma simple

I couldn't alter
you couldn't alter
he couldn't alter
we couldn't alter
you couldn't alter
they couldn't alter

Forma com V-ing

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

Perfeito

I couldn't have altered
you couldn't have altered
he couldn't have altered
we couldn't have altered
you couldn't have altered
they couldn't have altered

Perfeito com V-ing

I couldn't have been altering
you couldn't have been altering
he couldn't have been altering
we couldn't have been altering
you couldn't have been altering
they couldn't have been altering

Forma interrogativa

Forma simple

could I alter?
could you alter?
could he alter?
could we alter?
could you alter?
could they alter?

Forma com V-ing

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

Perfeito

could I have altered?
could you have altered?
could he have altered?
could we have altered?
could you have altered?
could they have altered?

Perfeito com V-ing

could I have been altering?
could you have been altering?
could he have been altering?
could we have been altering?
could you have been altering?
could they have been altering?

Forma interro-Negação

Forma simple

couldn't I alter?
couldn't you alter?
couldn't he alter?
couldn't we alter?
couldn't you alter?
couldn't they alter?

Forma com V-ing

couldn't I be altering?
couldn't you be altering?
couldn't he be altering?
couldn't we be altering?
couldn't you be altering?
couldn't they be altering?

Perfeito

couldn't I have altered?
couldn't you have altered?
couldn't he have altered?
couldn't we have altered?
couldn't you have altered?
couldn't they have altered?

Perfeito com V-ing

couldn't I have been altering?
couldn't you have been altering?
couldn't he have been altering?
couldn't we have been altering?
couldn't you have been altering?
couldn't they have been altering?

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