could fold
Verbo regular: fold - folded- folded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could fold
you could fold
he could fold
we could fold
you could fold
they could fold 	I could be folding
you could be folding
he could be folding
we could be folding
you could be folding
they could be folding	I could have folded
you could have folded
he could have folded
we could have folded
you could have folded
they could have folded	I could have been folding
you could have been folding
he could have been folding
we could have been folding
you could have been folding
they could have been folding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't fold
you couldn't fold
he couldn't fold
we couldn't fold
you couldn't fold
they couldn't fold 	I couldn't be folding
you couldn't be folding
he couldn't be folding
we couldn't be folding
you couldn't be folding
they couldn't be folding	I couldn't have folded
you couldn't have folded
he couldn't have folded
we couldn't have folded
you couldn't have folded
they couldn't have folded	I couldn't have been folding
you couldn't have been folding
he couldn't have been folding
we couldn't have been folding
you couldn't have been folding
they couldn't have been folding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I fold?
could you fold?
could he fold?
could we fold?
could you fold?
could they fold? 	could I be folding?
could you be folding?
could he be folding?
could we be folding?
could you be folding?
could they be folding? 	could I have folded?
could you have folded?
could he have folded?
could we have folded?
could you have folded?
could they have folded? 	could I have been folding?
could you have been folding?
could he have been folding?
could we have been folding?
could you have been folding?
could they have been folding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I fold?
couldn't you fold?
couldn't he fold?
couldn't we fold?
couldn't you fold?
couldn't they fold? 	couldn't I be folding?
couldn't you be folding?
couldn't he be folding?
couldn't we be folding?
couldn't you be folding?
couldn't they be folding? 	couldn't I have folded?
couldn't you have folded?
couldn't he have folded?
couldn't we have folded?
couldn't you have folded?
couldn't they have folded? 	couldn't I have been folding?
couldn't you have been folding?
couldn't he have been folding?
couldn't we have been folding?
couldn't you have been folding?
couldn't they have been folding?