can rough
Verbo regular: rough - roughed- roughed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can rough
you can rough
he can rough
we can rough
you can rough
they can rough 	I can be roughing
you can be roughing
he can be roughing
we can be roughing
you can be roughing
they can be roughing	I can have roughed
you can have roughed
he can have roughed
we can have roughed
you can have roughed
they can have roughed	I can have been roughing
you can have been roughing
he can have been roughing
we can have been roughing
you can have been roughing
they can have been roughing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't rough
you can't rough
he can't rough
we can't rough
you can't rough
they can't rough 	I can't be roughing
you can't be roughing
he can't be roughing
we can't be roughing
you can't be roughing
they can't be roughing	I can't have roughed
you can't have roughed
he can't have roughed
we can't have roughed
you can't have roughed
they can't have roughed	I can't have been roughing
you can't have been roughing
he can't have been roughing
we can't have been roughing
you can't have been roughing
they can't have been roughing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I rough?
can you rough?
can he rough?
can we rough?
can you rough?
can they rough? 	can I be roughing?
can you be roughing?
can he be roughing?
can we be roughing?
can you be roughing?
can they be roughing? 	can I have roughed?
can you have roughed?
can he have roughed?
can we have roughed?
can you have roughed?
can they have roughed? 	can I have been roughing?
can you have been roughing?
can he have been roughing?
can we have been roughing?
can you have been roughing?
can they have been roughing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I rough?
can't you rough?
can't he rough?
can't we rough?
can't you rough?
can't they rough? 	can't I be roughing?
can't you be roughing?
can't he be roughing?
can't we be roughing?
can't you be roughing?
can't they be roughing? 	can't I have roughed?
can't you have roughed?
can't he have roughed?
can't we have roughed?
can't you have roughed?
can't they have roughed? 	can't I have been roughing?
can't you have been roughing?
can't he have been roughing?
can't we have been roughing?
can't you have been roughing?
can't they have been roughing?