can walk
Verbo regular: walk - walked- walked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can walk
you can walk
he can walk
we can walk
you can walk
they can walk 	I can be walking
you can be walking
he can be walking
we can be walking
you can be walking
they can be walking	I can have walked
you can have walked
he can have walked
we can have walked
you can have walked
they can have walked	I can have been walking
you can have been walking
he can have been walking
we can have been walking
you can have been walking
they can have been walking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't walk
you can't walk
he can't walk
we can't walk
you can't walk
they can't walk 	I can't be walking
you can't be walking
he can't be walking
we can't be walking
you can't be walking
they can't be walking	I can't have walked
you can't have walked
he can't have walked
we can't have walked
you can't have walked
they can't have walked	I can't have been walking
you can't have been walking
he can't have been walking
we can't have been walking
you can't have been walking
they can't have been walking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I walk?
can you walk?
can he walk?
can we walk?
can you walk?
can they walk? 	can I be walking?
can you be walking?
can he be walking?
can we be walking?
can you be walking?
can they be walking? 	can I have walked?
can you have walked?
can he have walked?
can we have walked?
can you have walked?
can they have walked? 	can I have been walking?
can you have been walking?
can he have been walking?
can we have been walking?
can you have been walking?
can they have been walking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I walk?
can't you walk?
can't he walk?
can't we walk?
can't you walk?
can't they walk? 	can't I be walking?
can't you be walking?
can't he be walking?
can't we be walking?
can't you be walking?
can't they be walking? 	can't I have walked?
can't you have walked?
can't he have walked?
can't we have walked?
can't you have walked?
can't they have walked? 	can't I have been walking?
can't you have been walking?
can't he have been walking?
can't we have been walking?
can't you have been walking?
can't they have been walking?