I can unbutton you can unbutton she can unbutton we can unbutton you can unbutton they can unbutton
Forma con V-ing
I can be unbuttoning you can be unbuttoning she can be unbuttoning we can be unbuttoning you can be unbuttoning they can be unbuttoning
Perfecto
I can have unbuttoned you can have unbuttoned she can have unbuttoned we can have unbuttoned you can have unbuttoned they can have unbuttoned
Perfecto con V-ing
I can have been unbuttoning you can have been unbuttoning she can have been unbuttoning we can have been unbuttoning you can have been unbuttoning they can have been unbuttoning
Negación
Forma simple
I cannot unbutton you cannot unbutton she cannot unbutton we cannot unbutton you cannot unbutton they cannot unbutton
Forma con V-ing
I cannot be unbuttoning you cannot be unbuttoning she cannot be unbuttoning we cannot be unbuttoning you cannot be unbuttoning they cannot be unbuttoning
Perfecto
I cannot have unbuttoned you cannot have unbuttoned she cannot have unbuttoned we cannot have unbuttoned you cannot have unbuttoned they cannot have unbuttoned
Perfecto con V-ing
I cannot have been unbuttoning you cannot have been unbuttoning she cannot have been unbuttoning we cannot have been unbuttoning you cannot have been unbuttoning they cannot have been unbuttoning
Forma interrogativa
Forma simple
can I unbutton? can you unbutton? can she unbutton? can we unbutton? can you unbutton? can they unbutton?
Forma con V-ing
can I be unbuttoning? can you be unbuttoning? can she be unbuttoning? can we be unbuttoning? can you be unbuttoning? can they be unbuttoning?
Perfecto
can I have unbuttoned? can you have unbuttoned? can she have unbuttoned? can we have unbuttoned? can you have unbuttoned? can they have unbuttoned?
Perfecto con V-ing
can I have been unbuttoning? can you have been unbuttoning? can she have been unbuttoning? can we have been unbuttoning? can you have been unbuttoning? can they have been unbuttoning?
Forma interro-negativa
Forma simple
can I not unbutton? can you not unbutton? can she not unbutton? can we not unbutton? can you not unbutton? can they not unbutton?
Forma con V-ing
can I not be unbuttoning? can you not be unbuttoning? can she not be unbuttoning? can we not be unbuttoning? can you not be unbuttoning? can they not be unbuttoning?
Perfecto
can I not have unbuttoned? can you not have unbuttoned? can she not have unbuttoned? can we not have unbuttoned? can you not have unbuttoned? can they not have unbuttoned?
Perfecto con V-ing
can I not have been unbuttoning? can you not have been unbuttoning? can she not have been unbuttoning? can we not have been unbuttoning? can you not have been unbuttoning? can they not have been unbuttoning?