may refrain
Regular verb: refrain - refrained- refrained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may refrain
you may refrain
she may refrain
we may refrain
you may refrain
they may refrain 	I may be refraining
you may be refraining
she may be refraining
we may be refraining
you may be refraining
they may be refraining	I may have refrained
you may have refrained
she may have refrained
we may have refrained
you may have refrained
they may have refrained	I may have been refraining
you may have been refraining
she may have been refraining
we may have been refraining
you may have been refraining
they may have been refraining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not refrain
you may not refrain
she may not refrain
we may not refrain
you may not refrain
they may not refrain 	I may not be refraining
you may not be refraining
she may not be refraining
we may not be refraining
you may not be refraining
they may not be refraining	I may not have refrained
you may not have refrained
she may not have refrained
we may not have refrained
you may not have refrained
they may not have refrained	I may not have been refraining
you may not have been refraining
she may not have been refraining
we may not have been refraining
you may not have been refraining
they may not have been refraining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I refrain?
may you refrain?
may she refrain?
may we refrain?
may you refrain?
may they refrain? 	may I be refraining?
may you be refraining?
may she be refraining?
may we be refraining?
may you be refraining?
may they be refraining? 	may I have refrained?
may you have refrained?
may she have refrained?
may we have refrained?
may you have refrained?
may they have refrained? 	may I have been refraining?
may you have been refraining?
may she have been refraining?
may we have been refraining?
may you have been refraining?
may they have been refraining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not refrain?
may you not refrain?
may she not refrain?
may we not refrain?
may you not refrain?
may they not refrain? 	may I not be refraining?
may you not be refraining?
may she not be refraining?
may we not be refraining?
may you not be refraining?
may they not be refraining? 	may I not have refrained?
may you not have refrained?
may she not have refrained?
may we not have refrained?
may you not have refrained?
may they not have refrained? 	may I not have been refraining?
may you not have been refraining?
may she not have been refraining?
may we not have been refraining?
may you not have been refraining?
may they not have been refraining?