Conjugação do verbo inglês
COULD PROLONG

Verbo regular: prolong - prolonged - prolonged

Afirmação

Forma simple	Forma com V-ing
I could prolong you could prolong he could prolong we could prolong you could prolong they could prolong	I could be prolonging you could be prolonging he could be prolonging we could be prolonging you could be prolonging they could be prolonging
Perfeito	Perfeito com V-ing
I could have prolonged you could have prolonged he could have prolonged we could have prolonged you could have prolonged they could have prolonged	I could have been prolonging you could have been prolonging he could have been prolonging we could have been prolonging you could have been prolonging they could have been prolonging

Negação

Forma simple	Forma com V-ing
I couldn't prolong you couldn't prolong he couldn't prolong we couldn't prolong you couldn't prolong they couldn't prolong	I couldn't be prolonging you couldn't be prolonging he couldn't be prolonging we couldn't be prolonging you couldn't be prolonging they couldn't be prolonging
Perfeito	Perfeito com V-ing
I couldn't have prolonged you couldn't have prolonged he couldn't have prolonged we couldn't have prolonged you couldn't have prolonged they couldn't have prolonged	I couldn't have been prolonging you couldn't have been prolonging he couldn't have been prolonging we couldn't have been prolonging you couldn't have been prolonging they couldn't have been prolonging

Forma interrogativa

Forma simple	Forma com V-ing
could I prolong? could you prolong? could he prolong? could we prolong? could you prolong? could they prolong?	could I be prolonging? could you be prolonging? could he be prolonging? could we be prolonging? could you be prolonging? could they be prolonging?
Perfeito	Perfeito com V-ing
could I have prolonged? could you have prolonged? could he have prolonged? could we have prolonged? could you have prolonged? could they have prolonged?	could I have been prolonging? could you have been prolonging? could he have been prolonging? could we have been prolonging? could you have been prolonging? could they have been prolonging?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I prolong? couldn't you prolong? couldn't he prolong? couldn't we prolong? couldn't you prolong? couldn't they prolong?	couldn't I be prolonging? couldn't you be prolonging? couldn't he be prolonging? couldn't we be prolonging? couldn't you be prolonging? couldn't they be prolonging?
Perfeito	Perfeito com V-ing
couldn't I have prolonged? couldn't you have prolonged? couldn't he have prolonged? couldn't we have prolonged? couldn't you have prolonged? couldn't they have prolonged?	couldn't I have been prolonging? couldn't you have been prolonging? couldn't he have been prolonging? couldn't we have been prolonging? couldn't you have been prolonging? couldn't they have been prolonging?