Conjugación del verbo inglés COULD SUSTAIN
Verbo regular: sustain - sustained - sustained
Afirmación
Forma simple
I could sustainyou could sustain
he could sustain
we could sustain
you could sustain
they could sustain
Forma con V-ing
I could be sustainingyou could be sustaining
he could be sustaining
we could be sustaining
you could be sustaining
they could be sustaining
Perfecto
I could have sustainedyou could have sustained
he could have sustained
we could have sustained
you could have sustained
they could have sustained
Perfecto con V-ing
I could have been sustainingyou could have been sustaining
he could have been sustaining
we could have been sustaining
you could have been sustaining
they could have been sustaining
Negación
Forma simple
I couldn't sustainyou couldn't sustain
he couldn't sustain
we couldn't sustain
you couldn't sustain
they couldn't sustain
Forma con V-ing
I couldn't be sustainingyou couldn't be sustaining
he couldn't be sustaining
we couldn't be sustaining
you couldn't be sustaining
they couldn't be sustaining
Perfecto
I couldn't have sustainedyou couldn't have sustained
he couldn't have sustained
we couldn't have sustained
you couldn't have sustained
they couldn't have sustained
Perfecto con V-ing
I couldn't have been sustainingyou couldn't have been sustaining
he couldn't have been sustaining
we couldn't have been sustaining
you couldn't have been sustaining
they couldn't have been sustaining
Forma interrogativa
Forma simple
could I sustain?could you sustain?
could he sustain?
could we sustain?
could you sustain?
could they sustain?
Forma con V-ing
could I be sustaining?could you be sustaining?
could he be sustaining?
could we be sustaining?
could you be sustaining?
could they be sustaining?
Perfecto
could I have sustained?could you have sustained?
could he have sustained?
could we have sustained?
could you have sustained?
could they have sustained?
Perfecto con V-ing
could I have been sustaining?could you have been sustaining?
could he have been sustaining?
could we have been sustaining?
could you have been sustaining?
could they have been sustaining?
Forma interro-negativa
Forma simple
couldn't I sustain?couldn't you sustain?
couldn't he sustain?
couldn't we sustain?
couldn't you sustain?
couldn't they sustain?
Forma con V-ing
couldn't I be sustaining?couldn't you be sustaining?
couldn't he be sustaining?
couldn't we be sustaining?
couldn't you be sustaining?
couldn't they be sustaining?
Perfecto
couldn't I have sustained?couldn't you have sustained?
couldn't he have sustained?
couldn't we have sustained?
couldn't you have sustained?
couldn't they have sustained?
Perfecto con V-ing
couldn't I have been sustaining?couldn't you have been sustaining?
couldn't he have been sustaining?
couldn't we have been sustaining?
couldn't you have been sustaining?
couldn't they have been sustaining?