can ask
Verbo regular: ask - asked- asked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can ask
you can ask
she can ask
we can ask
you can ask
they can ask 	I can be asking
you can be asking
she can be asking
we can be asking
you can be asking
they can be asking	I can have asked
you can have asked
she can have asked
we can have asked
you can have asked
they can have asked	I can have been asking
you can have been asking
she can have been asking
we can have been asking
you can have been asking
they can have been asking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot ask
you cannot ask
she cannot ask
we cannot ask
you cannot ask
they cannot ask 	I cannot be asking
you cannot be asking
she cannot be asking
we cannot be asking
you cannot be asking
they cannot be asking	I cannot have asked
you cannot have asked
she cannot have asked
we cannot have asked
you cannot have asked
they cannot have asked	I cannot have been asking
you cannot have been asking
she cannot have been asking
we cannot have been asking
you cannot have been asking
they cannot have been asking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I ask?
can you ask?
can she ask?
can we ask?
can you ask?
can they ask? 	can I be asking?
can you be asking?
can she be asking?
can we be asking?
can you be asking?
can they be asking? 	can I have asked?
can you have asked?
can she have asked?
can we have asked?
can you have asked?
can they have asked? 	can I have been asking?
can you have been asking?
can she have been asking?
can we have been asking?
can you have been asking?
can they have been asking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not ask?
can you not ask?
can she not ask?
can we not ask?
can you not ask?
can they not ask? 	can I not be asking?
can you not be asking?
can she not be asking?
can we not be asking?
can you not be asking?
can they not be asking? 	can I not have asked?
can you not have asked?
can she not have asked?
can we not have asked?
can you not have asked?
can they not have asked? 	can I not have been asking?
can you not have been asking?
can she not have been asking?
can we not have been asking?
can you not have been asking?
can they not have been asking?