may threaten
Regular verb: threaten - threatened- threatened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may threaten
you may threaten
he may threaten
we may threaten
you may threaten
they may threaten 	I may be threatening
you may be threatening
he may be threatening
we may be threatening
you may be threatening
they may be threatening	I may have threatened
you may have threatened
he may have threatened
we may have threatened
you may have threatened
they may have threatened	I may have been threatening
you may have been threatening
he may have been threatening
we may have been threatening
you may have been threatening
they may have been threatening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not threaten
you may not threaten
he may not threaten
we may not threaten
you may not threaten
they may not threaten 	I may not be threatening
you may not be threatening
he may not be threatening
we may not be threatening
you may not be threatening
they may not be threatening	I may not have threatened
you may not have threatened
he may not have threatened
we may not have threatened
you may not have threatened
they may not have threatened	I may not have been threatening
you may not have been threatening
he may not have been threatening
we may not have been threatening
you may not have been threatening
they may not have been threatening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I threaten?
may you threaten?
may he threaten?
may we threaten?
may you threaten?
may they threaten? 	may I be threatening?
may you be threatening?
may he be threatening?
may we be threatening?
may you be threatening?
may they be threatening? 	may I have threatened?
may you have threatened?
may he have threatened?
may we have threatened?
may you have threatened?
may they have threatened? 	may I have been threatening?
may you have been threatening?
may he have been threatening?
may we have been threatening?
may you have been threatening?
may they have been threatening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not threaten?
may you not threaten?
may he not threaten?
may we not threaten?
may you not threaten?
may they not threaten? 	may I not be threatening?
may you not be threatening?
may he not be threatening?
may we not be threatening?
may you not be threatening?
may they not be threatening? 	may I not have threatened?
may you not have threatened?
may he not have threatened?
may we not have threatened?
may you not have threatened?
may they not have threatened? 	may I not have been threatening?
may you not have been threatening?
may he not have been threatening?
may we not have been threatening?
may you not have been threatening?
may they not have been threatening?