could sweeten
Verbo regolare: sweeten - sweetened- sweetened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could sweeten
you could sweeten
she could sweeten
we could sweeten
you could sweeten
they could sweeten 	I could be sweetening
you could be sweetening
she could be sweetening
we could be sweetening
you could be sweetening
they could be sweetening	I could have sweetened
you could have sweetened
she could have sweetened
we could have sweetened
you could have sweetened
they could have sweetened	I could have been sweetening
you could have been sweetening
she could have been sweetening
we could have been sweetening
you could have been sweetening
they could have been sweetening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not sweeten
you could not sweeten
she could not sweeten
we could not sweeten
you could not sweeten
they could not sweeten 	I could not be sweetening
you could not be sweetening
she could not be sweetening
we could not be sweetening
you could not be sweetening
they could not be sweetening	I could not have sweetened
you could not have sweetened
she could not have sweetened
we could not have sweetened
you could not have sweetened
they could not have sweetened	I could not have been sweetening
you could not have been sweetening
she could not have been sweetening
we could not have been sweetening
you could not have been sweetening
they could not have been sweetening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I sweeten?
could you sweeten?
could she sweeten?
could we sweeten?
could you sweeten?
could they sweeten? 	could I be sweetening?
could you be sweetening?
could she be sweetening?
could we be sweetening?
could you be sweetening?
could they be sweetening? 	could I have sweetened?
could you have sweetened?
could she have sweetened?
could we have sweetened?
could you have sweetened?
could they have sweetened? 	could I have been sweetening?
could you have been sweetening?
could she have been sweetening?
could we have been sweetening?
could you have been sweetening?
could they have been sweetening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not sweeten?
could you not sweeten?
could she not sweeten?
could we not sweeten?
could you not sweeten?
could they not sweeten? 	could I not be sweetening?
could you not be sweetening?
could she not be sweetening?
could we not be sweetening?
could you not be sweetening?
could they not be sweetening? 	could I not have sweetened?
could you not have sweetened?
could she not have sweetened?
could we not have sweetened?
could you not have sweetened?
could they not have sweetened? 	could I not have been sweetening?
could you not have been sweetening?
could she not have been sweetening?
could we not have been sweetening?
could you not have been sweetening?
could they not have been sweetening?