could slam
Verbo regular: slam - slammed- slammed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could slam
you could slam
he could slam
we could slam
you could slam
they could slam 	I could be slamming
you could be slamming
he could be slamming
we could be slamming
you could be slamming
they could be slamming	I could have slammed
you could have slammed
he could have slammed
we could have slammed
you could have slammed
they could have slammed	I could have been slamming
you could have been slamming
he could have been slamming
we could have been slamming
you could have been slamming
they could have been slamming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't slam
you couldn't slam
he couldn't slam
we couldn't slam
you couldn't slam
they couldn't slam 	I couldn't be slamming
you couldn't be slamming
he couldn't be slamming
we couldn't be slamming
you couldn't be slamming
they couldn't be slamming	I couldn't have slammed
you couldn't have slammed
he couldn't have slammed
we couldn't have slammed
you couldn't have slammed
they couldn't have slammed	I couldn't have been slamming
you couldn't have been slamming
he couldn't have been slamming
we couldn't have been slamming
you couldn't have been slamming
they couldn't have been slamming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I slam?
could you slam?
could he slam?
could we slam?
could you slam?
could they slam? 	could I be slamming?
could you be slamming?
could he be slamming?
could we be slamming?
could you be slamming?
could they be slamming? 	could I have slammed?
could you have slammed?
could he have slammed?
could we have slammed?
could you have slammed?
could they have slammed? 	could I have been slamming?
could you have been slamming?
could he have been slamming?
could we have been slamming?
could you have been slamming?
could they have been slamming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I slam?
couldn't you slam?
couldn't he slam?
couldn't we slam?
couldn't you slam?
couldn't they slam? 	couldn't I be slamming?
couldn't you be slamming?
couldn't he be slamming?
couldn't we be slamming?
couldn't you be slamming?
couldn't they be slamming? 	couldn't I have slammed?
couldn't you have slammed?
couldn't he have slammed?
couldn't we have slammed?
couldn't you have slammed?
couldn't they have slammed? 	couldn't I have been slamming?
couldn't you have been slamming?
couldn't he have been slamming?
couldn't we have been slamming?
couldn't you have been slamming?
couldn't they have been slamming?