can brighten
Verbo regular: brighten - brightened- brightened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can brighten
you can brighten
he can brighten
we can brighten
you can brighten
they can brighten 	I can be brightening
you can be brightening
he can be brightening
we can be brightening
you can be brightening
they can be brightening	I can have brightened
you can have brightened
he can have brightened
we can have brightened
you can have brightened
they can have brightened	I can have been brightening
you can have been brightening
he can have been brightening
we can have been brightening
you can have been brightening
they can have been brightening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't brighten
you can't brighten
he can't brighten
we can't brighten
you can't brighten
they can't brighten 	I can't be brightening
you can't be brightening
he can't be brightening
we can't be brightening
you can't be brightening
they can't be brightening	I can't have brightened
you can't have brightened
he can't have brightened
we can't have brightened
you can't have brightened
they can't have brightened	I can't have been brightening
you can't have been brightening
he can't have been brightening
we can't have been brightening
you can't have been brightening
they can't have been brightening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I brighten?
can you brighten?
can he brighten?
can we brighten?
can you brighten?
can they brighten? 	can I be brightening?
can you be brightening?
can he be brightening?
can we be brightening?
can you be brightening?
can they be brightening? 	can I have brightened?
can you have brightened?
can he have brightened?
can we have brightened?
can you have brightened?
can they have brightened? 	can I have been brightening?
can you have been brightening?
can he have been brightening?
can we have been brightening?
can you have been brightening?
can they have been brightening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I brighten?
can't you brighten?
can't he brighten?
can't we brighten?
can't you brighten?
can't they brighten? 	can't I be brightening?
can't you be brightening?
can't he be brightening?
can't we be brightening?
can't you be brightening?
can't they be brightening? 	can't I have brightened?
can't you have brightened?
can't he have brightened?
can't we have brightened?
can't you have brightened?
can't they have brightened? 	can't I have been brightening?
can't you have been brightening?
can't he have been brightening?
can't we have been brightening?
can't you have been brightening?
can't they have been brightening?