could gulp
Verbo regular: gulp - gulped- gulped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could gulp
you could gulp
he could gulp
we could gulp
you could gulp
they could gulp 	I could be gulping
you could be gulping
he could be gulping
we could be gulping
you could be gulping
they could be gulping	I could have gulped
you could have gulped
he could have gulped
we could have gulped
you could have gulped
they could have gulped	I could have been gulping
you could have been gulping
he could have been gulping
we could have been gulping
you could have been gulping
they could have been gulping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't gulp
you couldn't gulp
he couldn't gulp
we couldn't gulp
you couldn't gulp
they couldn't gulp 	I couldn't be gulping
you couldn't be gulping
he couldn't be gulping
we couldn't be gulping
you couldn't be gulping
they couldn't be gulping	I couldn't have gulped
you couldn't have gulped
he couldn't have gulped
we couldn't have gulped
you couldn't have gulped
they couldn't have gulped	I couldn't have been gulping
you couldn't have been gulping
he couldn't have been gulping
we couldn't have been gulping
you couldn't have been gulping
they couldn't have been gulping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I gulp?
could you gulp?
could he gulp?
could we gulp?
could you gulp?
could they gulp? 	could I be gulping?
could you be gulping?
could he be gulping?
could we be gulping?
could you be gulping?
could they be gulping? 	could I have gulped?
could you have gulped?
could he have gulped?
could we have gulped?
could you have gulped?
could they have gulped? 	could I have been gulping?
could you have been gulping?
could he have been gulping?
could we have been gulping?
could you have been gulping?
could they have been gulping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I gulp?
couldn't you gulp?
couldn't he gulp?
couldn't we gulp?
couldn't you gulp?
couldn't they gulp? 	couldn't I be gulping?
couldn't you be gulping?
couldn't he be gulping?
couldn't we be gulping?
couldn't you be gulping?
couldn't they be gulping? 	couldn't I have gulped?
couldn't you have gulped?
couldn't he have gulped?
couldn't we have gulped?
couldn't you have gulped?
couldn't they have gulped? 	couldn't I have been gulping?
couldn't you have been gulping?
couldn't he have been gulping?
couldn't we have been gulping?
couldn't you have been gulping?
couldn't they have been gulping?