can soften
Verbo regular: soften - softened- softened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot soften
you cannot soften
he cannot soften
we cannot soften
you cannot soften
they cannot soften 	I cannot be softening
you cannot be softening
he cannot be softening
we cannot be softening
you cannot be softening
they cannot be softening	I cannot have softened
you cannot have softened
he cannot have softened
we cannot have softened
you cannot have softened
they cannot have softened	I cannot have been softening
you cannot have been softening
he cannot have been softening
we cannot have been softening
you cannot have been softening
they cannot have been softening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not soften?
can you not soften?
can he not soften?
can we not soften?
can you not soften?
can they not soften? 	can I not be softening?
can you not be softening?
can he not be softening?
can we not be softening?
can you not be softening?
can they not be softening? 	can I not have softened?
can you not have softened?
can he not have softened?
can we not have softened?
can you not have softened?
can they not have softened? 	can I not have been softening?
can you not have been softening?
can he not have been softening?
can we not have been softening?
can you not have been softening?
can they not have been softening?