I can ask you can ask he can ask we can ask you can ask they can ask
Forma con V-ing
I can be asking you can be asking he can be asking we can be asking you can be asking they can be asking
Perfecto
I can have asked you can have asked he can have asked we can have asked you can have asked they can have asked
Perfecto con V-ing
I can have been asking you can have been asking he can have been asking we can have been asking you can have been asking they can have been asking
Negación
Forma simple
I can't ask you can't ask he can't ask we can't ask you can't ask they can't ask
Forma con V-ing
I can't be asking you can't be asking he can't be asking we can't be asking you can't be asking they can't be asking
Perfecto
I can't have asked you can't have asked he can't have asked we can't have asked you can't have asked they can't have asked
Perfecto con V-ing
I can't have been asking you can't have been asking he can't have been asking we can't have been asking you can't have been asking they can't have been asking
Forma interrogativa
Forma simple
can I ask? can you ask? can he ask? can we ask? can you ask? can they ask?
Forma con V-ing
can I be asking? can you be asking? can he be asking? can we be asking? can you be asking? can they be asking?
Perfecto
can I have asked? can you have asked? can he have asked? can we have asked? can you have asked? can they have asked?
Perfecto con V-ing
can I have been asking? can you have been asking? can he have been asking? can we have been asking? can you have been asking? can they have been asking?
Forma interro-negativa
Forma simple
can't I ask? can't you ask? can't he ask? can't we ask? can't you ask? can't they ask?
Forma con V-ing
can't I be asking? can't you be asking? can't he be asking? can't we be asking? can't you be asking? can't they be asking?
Perfecto
can't I have asked? can't you have asked? can't he have asked? can't we have asked? can't you have asked? can't they have asked?
Perfecto con V-ing
can't I have been asking? can't you have been asking? can't he have been asking? can't we have been asking? can't you have been asking? can't they have been asking?