may caution
Verbo regular: caution - cautioned- cautioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may caution
you may caution
he may caution
we may caution
you may caution
they may caution 	I may be cautioning
you may be cautioning
he may be cautioning
we may be cautioning
you may be cautioning
they may be cautioning	I may have cautioned
you may have cautioned
he may have cautioned
we may have cautioned
you may have cautioned
they may have cautioned	I may have been cautioning
you may have been cautioning
he may have been cautioning
we may have been cautioning
you may have been cautioning
they may have been cautioning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not caution
you may not caution
he may not caution
we may not caution
you may not caution
they may not caution 	I may not be cautioning
you may not be cautioning
he may not be cautioning
we may not be cautioning
you may not be cautioning
they may not be cautioning	I may not have cautioned
you may not have cautioned
he may not have cautioned
we may not have cautioned
you may not have cautioned
they may not have cautioned	I may not have been cautioning
you may not have been cautioning
he may not have been cautioning
we may not have been cautioning
you may not have been cautioning
they may not have been cautioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I caution?
may you caution?
may he caution?
may we caution?
may you caution?
may they caution? 	may I be cautioning?
may you be cautioning?
may he be cautioning?
may we be cautioning?
may you be cautioning?
may they be cautioning? 	may I have cautioned?
may you have cautioned?
may he have cautioned?
may we have cautioned?
may you have cautioned?
may they have cautioned? 	may I have been cautioning?
may you have been cautioning?
may he have been cautioning?
may we have been cautioning?
may you have been cautioning?
may they have been cautioning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not caution?
may you not caution?
may he not caution?
may we not caution?
may you not caution?
may they not caution? 	may I not be cautioning?
may you not be cautioning?
may he not be cautioning?
may we not be cautioning?
may you not be cautioning?
may they not be cautioning? 	may I not have cautioned?
may you not have cautioned?
may he not have cautioned?
may we not have cautioned?
may you not have cautioned?
may they not have cautioned? 	may I not have been cautioning?
may you not have been cautioning?
may he not have been cautioning?
may we not have been cautioning?
may you not have been cautioning?
may they not have been cautioning?