can smoke
Verbo regular: smoke - smoked- smoked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can smoke
you can smoke
he can smoke
we can smoke
you can smoke
they can smoke 	I can be smoking
you can be smoking
he can be smoking
we can be smoking
you can be smoking
they can be smoking	I can have smoked
you can have smoked
he can have smoked
we can have smoked
you can have smoked
they can have smoked	I can have been smoking
you can have been smoking
he can have been smoking
we can have been smoking
you can have been smoking
they can have been smoking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot smoke
you cannot smoke
he cannot smoke
we cannot smoke
you cannot smoke
they cannot smoke 	I cannot be smoking
you cannot be smoking
he cannot be smoking
we cannot be smoking
you cannot be smoking
they cannot be smoking	I cannot have smoked
you cannot have smoked
he cannot have smoked
we cannot have smoked
you cannot have smoked
they cannot have smoked	I cannot have been smoking
you cannot have been smoking
he cannot have been smoking
we cannot have been smoking
you cannot have been smoking
they cannot have been smoking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I smoke?
can you smoke?
can he smoke?
can we smoke?
can you smoke?
can they smoke? 	can I be smoking?
can you be smoking?
can he be smoking?
can we be smoking?
can you be smoking?
can they be smoking? 	can I have smoked?
can you have smoked?
can he have smoked?
can we have smoked?
can you have smoked?
can they have smoked? 	can I have been smoking?
can you have been smoking?
can he have been smoking?
can we have been smoking?
can you have been smoking?
can they have been smoking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not smoke?
can you not smoke?
can he not smoke?
can we not smoke?
can you not smoke?
can they not smoke? 	can I not be smoking?
can you not be smoking?
can he not be smoking?
can we not be smoking?
can you not be smoking?
can they not be smoking? 	can I not have smoked?
can you not have smoked?
can he not have smoked?
can we not have smoked?
can you not have smoked?
can they not have smoked? 	can I not have been smoking?
can you not have been smoking?
can he not have been smoking?
can we not have been smoking?
can you not have been smoking?
can they not have been smoking?