could curse
Verbo regular: curse - cursed- cursed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could curse
you could curse
he could curse
we could curse
you could curse
they could curse 	I could be cursing
you could be cursing
he could be cursing
we could be cursing
you could be cursing
they could be cursing	I could have cursed
you could have cursed
he could have cursed
we could have cursed
you could have cursed
they could have cursed	I could have been cursing
you could have been cursing
he could have been cursing
we could have been cursing
you could have been cursing
they could have been cursing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't curse
you couldn't curse
he couldn't curse
we couldn't curse
you couldn't curse
they couldn't curse 	I couldn't be cursing
you couldn't be cursing
he couldn't be cursing
we couldn't be cursing
you couldn't be cursing
they couldn't be cursing	I couldn't have cursed
you couldn't have cursed
he couldn't have cursed
we couldn't have cursed
you couldn't have cursed
they couldn't have cursed	I couldn't have been cursing
you couldn't have been cursing
he couldn't have been cursing
we couldn't have been cursing
you couldn't have been cursing
they couldn't have been cursing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I curse?
could you curse?
could he curse?
could we curse?
could you curse?
could they curse? 	could I be cursing?
could you be cursing?
could he be cursing?
could we be cursing?
could you be cursing?
could they be cursing? 	could I have cursed?
could you have cursed?
could he have cursed?
could we have cursed?
could you have cursed?
could they have cursed? 	could I have been cursing?
could you have been cursing?
could he have been cursing?
could we have been cursing?
could you have been cursing?
could they have been cursing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I curse?
couldn't you curse?
couldn't he curse?
couldn't we curse?
couldn't you curse?
couldn't they curse? 	couldn't I be cursing?
couldn't you be cursing?
couldn't he be cursing?
couldn't we be cursing?
couldn't you be cursing?
couldn't they be cursing? 	couldn't I have cursed?
couldn't you have cursed?
couldn't he have cursed?
couldn't we have cursed?
couldn't you have cursed?
couldn't they have cursed? 	couldn't I have been cursing?
couldn't you have been cursing?
couldn't he have been cursing?
couldn't we have been cursing?
couldn't you have been cursing?
couldn't they have been cursing?