can soften
Verbo regular: soften - softened- softened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can soften
you can soften
he can soften
we can soften
you can soften
they can soften 	I can be softening
you can be softening
he can be softening
we can be softening
you can be softening
they can be softening	I can have softened
you can have softened
he can have softened
we can have softened
you can have softened
they can have softened	I can have been softening
you can have been softening
he can have been softening
we can have been softening
you can have been softening
they can have been softening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't soften
you can't soften
he can't soften
we can't soften
you can't soften
they can't soften 	I can't be softening
you can't be softening
he can't be softening
we can't be softening
you can't be softening
they can't be softening	I can't have softened
you can't have softened
he can't have softened
we can't have softened
you can't have softened
they can't have softened	I can't have been softening
you can't have been softening
he can't have been softening
we can't have been softening
you can't have been softening
they can't have been softening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I soften?
can you soften?
can he soften?
can we soften?
can you soften?
can they soften? 	can I be softening?
can you be softening?
can he be softening?
can we be softening?
can you be softening?
can they be softening? 	can I have softened?
can you have softened?
can he have softened?
can we have softened?
can you have softened?
can they have softened? 	can I have been softening?
can you have been softening?
can he have been softening?
can we have been softening?
can you have been softening?
can they have been softening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I soften?
can't you soften?
can't he soften?
can't we soften?
can't you soften?
can't they soften? 	can't I be softening?
can't you be softening?
can't he be softening?
can't we be softening?
can't you be softening?
can't they be softening? 	can't I have softened?
can't you have softened?
can't he have softened?
can't we have softened?
can't you have softened?
can't they have softened? 	can't I have been softening?
can't you have been softening?
can't he have been softening?
can't we have been softening?
can't you have been softening?
can't they have been softening?