I can use you can use he can use we can use you can use they can use
Forma con V-ing
I can be using you can be using he can be using we can be using you can be using they can be using
Perfecto
I can have used you can have used he can have used we can have used you can have used they can have used
Perfecto con V-ing
I can have been using you can have been using he can have been using we can have been using you can have been using they can have been using
Negación
Forma simple
I can't use you can't use he can't use we can't use you can't use they can't use
Forma con V-ing
I can't be using you can't be using he can't be using we can't be using you can't be using they can't be using
Perfecto
I can't have used you can't have used he can't have used we can't have used you can't have used they can't have used
Perfecto con V-ing
I can't have been using you can't have been using he can't have been using we can't have been using you can't have been using they can't have been using
Forma interrogativa
Forma simple
can I use? can you use? can he use? can we use? can you use? can they use?
Forma con V-ing
can I be using? can you be using? can he be using? can we be using? can you be using? can they be using?
Perfecto
can I have used? can you have used? can he have used? can we have used? can you have used? can they have used?
Perfecto con V-ing
can I have been using? can you have been using? can he have been using? can we have been using? can you have been using? can they have been using?
Forma interro-negativa
Forma simple
can't I use? can't you use? can't he use? can't we use? can't you use? can't they use?
Forma con V-ing
can't I be using? can't you be using? can't he be using? can't we be using? can't you be using? can't they be using?
Perfecto
can't I have used? can't you have used? can't he have used? can't we have used? can't you have used? can't they have used?
Perfecto con V-ing
can't I have been using? can't you have been using? can't he have been using? can't we have been using? can't you have been using? can't they have been using?