can bark
Verbo regular: bark - barked- barked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can bark
you can bark
he can bark
we can bark
you can bark
they can bark 	I can be barking
you can be barking
he can be barking
we can be barking
you can be barking
they can be barking	I can have barked
you can have barked
he can have barked
we can have barked
you can have barked
they can have barked	I can have been barking
you can have been barking
he can have been barking
we can have been barking
you can have been barking
they can have been barking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't bark
you can't bark
he can't bark
we can't bark
you can't bark
they can't bark 	I can't be barking
you can't be barking
he can't be barking
we can't be barking
you can't be barking
they can't be barking	I can't have barked
you can't have barked
he can't have barked
we can't have barked
you can't have barked
they can't have barked	I can't have been barking
you can't have been barking
he can't have been barking
we can't have been barking
you can't have been barking
they can't have been barking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I bark?
can you bark?
can he bark?
can we bark?
can you bark?
can they bark? 	can I be barking?
can you be barking?
can he be barking?
can we be barking?
can you be barking?
can they be barking? 	can I have barked?
can you have barked?
can he have barked?
can we have barked?
can you have barked?
can they have barked? 	can I have been barking?
can you have been barking?
can he have been barking?
can we have been barking?
can you have been barking?
can they have been barking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I bark?
can't you bark?
can't he bark?
can't we bark?
can't you bark?
can't they bark? 	can't I be barking?
can't you be barking?
can't he be barking?
can't we be barking?
can't you be barking?
can't they be barking? 	can't I have barked?
can't you have barked?
can't he have barked?
can't we have barked?
can't you have barked?
can't they have barked? 	can't I have been barking?
can't you have been barking?
can't he have been barking?
can't we have been barking?
can't you have been barking?
can't they have been barking?