can box
Verbo regular: box - boxed- boxed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can box
you can box
he can box
we can box
you can box
they can box 	I can be boxing
you can be boxing
he can be boxing
we can be boxing
you can be boxing
they can be boxing	I can have boxed
you can have boxed
he can have boxed
we can have boxed
you can have boxed
they can have boxed	I can have been boxing
you can have been boxing
he can have been boxing
we can have been boxing
you can have been boxing
they can have been boxing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't box
you can't box
he can't box
we can't box
you can't box
they can't box 	I can't be boxing
you can't be boxing
he can't be boxing
we can't be boxing
you can't be boxing
they can't be boxing	I can't have boxed
you can't have boxed
he can't have boxed
we can't have boxed
you can't have boxed
they can't have boxed	I can't have been boxing
you can't have been boxing
he can't have been boxing
we can't have been boxing
you can't have been boxing
they can't have been boxing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I box?
can you box?
can he box?
can we box?
can you box?
can they box? 	can I be boxing?
can you be boxing?
can he be boxing?
can we be boxing?
can you be boxing?
can they be boxing? 	can I have boxed?
can you have boxed?
can he have boxed?
can we have boxed?
can you have boxed?
can they have boxed? 	can I have been boxing?
can you have been boxing?
can he have been boxing?
can we have been boxing?
can you have been boxing?
can they have been boxing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I box?
can't you box?
can't he box?
can't we box?
can't you box?
can't they box? 	can't I be boxing?
can't you be boxing?
can't he be boxing?
can't we be boxing?
can't you be boxing?
can't they be boxing? 	can't I have boxed?
can't you have boxed?
can't he have boxed?
can't we have boxed?
can't you have boxed?
can't they have boxed? 	can't I have been boxing?
can't you have been boxing?
can't he have been boxing?
can't we have been boxing?
can't you have been boxing?
can't they have been boxing?