may dampen
Regular verb: dampen - dampened- dampened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may dampen
you may dampen
he may dampen
we may dampen
you may dampen
they may dampen 	I may be dampening
you may be dampening
he may be dampening
we may be dampening
you may be dampening
they may be dampening	I may have dampened
you may have dampened
he may have dampened
we may have dampened
you may have dampened
they may have dampened	I may have been dampening
you may have been dampening
he may have been dampening
we may have been dampening
you may have been dampening
they may have been dampening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not dampen
you may not dampen
he may not dampen
we may not dampen
you may not dampen
they may not dampen 	I may not be dampening
you may not be dampening
he may not be dampening
we may not be dampening
you may not be dampening
they may not be dampening	I may not have dampened
you may not have dampened
he may not have dampened
we may not have dampened
you may not have dampened
they may not have dampened	I may not have been dampening
you may not have been dampening
he may not have been dampening
we may not have been dampening
you may not have been dampening
they may not have been dampening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I dampen?
may you dampen?
may he dampen?
may we dampen?
may you dampen?
may they dampen? 	may I be dampening?
may you be dampening?
may he be dampening?
may we be dampening?
may you be dampening?
may they be dampening? 	may I have dampened?
may you have dampened?
may he have dampened?
may we have dampened?
may you have dampened?
may they have dampened? 	may I have been dampening?
may you have been dampening?
may he have been dampening?
may we have been dampening?
may you have been dampening?
may they have been dampening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not dampen?
may you not dampen?
may he not dampen?
may we not dampen?
may you not dampen?
may they not dampen? 	may I not be dampening?
may you not be dampening?
may he not be dampening?
may we not be dampening?
may you not be dampening?
may they not be dampening? 	may I not have dampened?
may you not have dampened?
may he not have dampened?
may we not have dampened?
may you not have dampened?
may they not have dampened? 	may I not have been dampening?
may you not have been dampening?
may he not have been dampening?
may we not have been dampening?
may you not have been dampening?
may they not have been dampening?