I can change you can change he can change we can change you can change they can change
Forma con V-ing
I can be changing you can be changing he can be changing we can be changing you can be changing they can be changing
Perfecto
I can have changed you can have changed he can have changed we can have changed you can have changed they can have changed
Perfecto con V-ing
I can have been changing you can have been changing he can have been changing we can have been changing you can have been changing they can have been changing
Negación
Forma simple
I can't change you can't change he can't change we can't change you can't change they can't change
Forma con V-ing
I can't be changing you can't be changing he can't be changing we can't be changing you can't be changing they can't be changing
Perfecto
I can't have changed you can't have changed he can't have changed we can't have changed you can't have changed they can't have changed
Perfecto con V-ing
I can't have been changing you can't have been changing he can't have been changing we can't have been changing you can't have been changing they can't have been changing
Forma interrogativa
Forma simple
can I change? can you change? can he change? can we change? can you change? can they change?
Forma con V-ing
can I be changing? can you be changing? can he be changing? can we be changing? can you be changing? can they be changing?
Perfecto
can I have changed? can you have changed? can he have changed? can we have changed? can you have changed? can they have changed?
Perfecto con V-ing
can I have been changing? can you have been changing? can he have been changing? can we have been changing? can you have been changing? can they have been changing?
Forma interro-negativa
Forma simple
can't I change? can't you change? can't he change? can't we change? can't you change? can't they change?
Forma con V-ing
can't I be changing? can't you be changing? can't he be changing? can't we be changing? can't you be changing? can't they be changing?
Perfecto
can't I have changed? can't you have changed? can't he have changed? can't we have changed? can't you have changed? can't they have changed?
Perfecto con V-ing
can't I have been changing? can't you have been changing? can't he have been changing? can't we have been changing? can't you have been changing? can't they have been changing?