Conjugación del verbo inglés
COULD PURCHASE

Verbo regular: purchase - purchased - purchased

Afirmación

Forma simple	Forma con V-ing
I could purchase you could purchase he could purchase we could purchase you could purchase they could purchase	I could be purchasing you could be purchasing he could be purchasing we could be purchasing you could be purchasing they could be purchasing
Perfecto	Perfecto con V-ing
I could have purchased you could have purchased he could have purchased we could have purchased you could have purchased they could have purchased	I could have been purchasing you could have been purchasing he could have been purchasing we could have been purchasing you could have been purchasing they could have been purchasing

Negación

Forma simple	Forma con V-ing
I couldn't purchase you couldn't purchase he couldn't purchase we couldn't purchase you couldn't purchase they couldn't purchase	I couldn't be purchasing you couldn't be purchasing he couldn't be purchasing we couldn't be purchasing you couldn't be purchasing they couldn't be purchasing
Perfecto	Perfecto con V-ing
I couldn't have purchased you couldn't have purchased he couldn't have purchased we couldn't have purchased you couldn't have purchased they couldn't have purchased	I couldn't have been purchasing you couldn't have been purchasing he couldn't have been purchasing we couldn't have been purchasing you couldn't have been purchasing they couldn't have been purchasing

Forma interrogativa

Forma simple	Forma con V-ing
could I purchase? could you purchase? could he purchase? could we purchase? could you purchase? could they purchase?	could I be purchasing? could you be purchasing? could he be purchasing? could we be purchasing? could you be purchasing? could they be purchasing?
Perfecto	Perfecto con V-ing
could I have purchased? could you have purchased? could he have purchased? could we have purchased? could you have purchased? could they have purchased?	could I have been purchasing? could you have been purchasing? could he have been purchasing? could we have been purchasing? could you have been purchasing? could they have been purchasing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I purchase? couldn't you purchase? couldn't he purchase? couldn't we purchase? couldn't you purchase? couldn't they purchase?	couldn't I be purchasing? couldn't you be purchasing? couldn't he be purchasing? couldn't we be purchasing? couldn't you be purchasing? couldn't they be purchasing?
Perfecto	Perfecto con V-ing
couldn't I have purchased? couldn't you have purchased? couldn't he have purchased? couldn't we have purchased? couldn't you have purchased? couldn't they have purchased?	couldn't I have been purchasing? couldn't you have been purchasing? couldn't he have been purchasing? couldn't we have been purchasing? couldn't you have been purchasing? couldn't they have been purchasing?