I can question you can question she can question we can question you can question they can question
Forma con V-ing
I can be questioning you can be questioning she can be questioning we can be questioning you can be questioning they can be questioning
Perfecto
I can have questioned you can have questioned she can have questioned we can have questioned you can have questioned they can have questioned
Perfecto con V-ing
I can have been questioning you can have been questioning she can have been questioning we can have been questioning you can have been questioning they can have been questioning
Negación
Forma simple
I cannot question you cannot question she cannot question we cannot question you cannot question they cannot question
Forma con V-ing
I cannot be questioning you cannot be questioning she cannot be questioning we cannot be questioning you cannot be questioning they cannot be questioning
Perfecto
I cannot have questioned you cannot have questioned she cannot have questioned we cannot have questioned you cannot have questioned they cannot have questioned
Perfecto con V-ing
I cannot have been questioning you cannot have been questioning she cannot have been questioning we cannot have been questioning you cannot have been questioning they cannot have been questioning
Forma interrogativa
Forma simple
can I question? can you question? can she question? can we question? can you question? can they question?
Forma con V-ing
can I be questioning? can you be questioning? can she be questioning? can we be questioning? can you be questioning? can they be questioning?
Perfecto
can I have questioned? can you have questioned? can she have questioned? can we have questioned? can you have questioned? can they have questioned?
Perfecto con V-ing
can I have been questioning? can you have been questioning? can she have been questioning? can we have been questioning? can you have been questioning? can they have been questioning?
Forma interro-negativa
Forma simple
can I not question? can you not question? can she not question? can we not question? can you not question? can they not question?
Forma con V-ing
can I not be questioning? can you not be questioning? can she not be questioning? can we not be questioning? can you not be questioning? can they not be questioning?
Perfecto
can I not have questioned? can you not have questioned? can she not have questioned? can we not have questioned? can you not have questioned? can they not have questioned?
Perfecto con V-ing
can I not have been questioning? can you not have been questioning? can she not have been questioning? can we not have been questioning? can you not have been questioning? can they not have been questioning?