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 cannot ask you cannot ask he cannot ask we cannot ask you cannot ask they cannot ask
Forma con V-ing
I cannot be asking you cannot be asking he cannot be asking we cannot be asking you cannot be asking they cannot be asking
Perfecto
I cannot have asked you cannot have asked he cannot have asked we cannot have asked you cannot have asked they cannot have asked
Perfecto con V-ing
I cannot have been asking you cannot have been asking he cannot have been asking we cannot have been asking you cannot have been asking they cannot 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 I not ask? can you not ask? can he not ask? can we not ask? can you not ask? can they not ask?
Forma con V-ing
can I not be asking? can you not be asking? can he not be asking? can we not be asking? can you not be asking? can they not be asking?
Perfecto
can I not have asked? can you not have asked? can he not have asked? can we not have asked? can you not have asked? can they not have asked?
Perfecto con V-ing
can I not have been asking? can you not have been asking? can he not have been asking? can we not have been asking? can you not have been asking? can they not have been asking?