may participate
Regular verb: participate - participated- participated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may participate
you may participate
she may participate
we may participate
you may participate
they may participate 	I may be participating
you may be participating
she may be participating
we may be participating
you may be participating
they may be participating	I may have participated
you may have participated
she may have participated
we may have participated
you may have participated
they may have participated	I may have been participating
you may have been participating
she may have been participating
we may have been participating
you may have been participating
they may have been participating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't participate
you mayn't participate
she mayn't participate
we mayn't participate
you mayn't participate
they mayn't participate 	I mayn't be participating
you mayn't be participating
she mayn't be participating
we mayn't be participating
you mayn't be participating
they mayn't be participating	I mayn't have participated
you mayn't have participated
she mayn't have participated
we mayn't have participated
you mayn't have participated
they mayn't have participated	I mayn't have been participating
you mayn't have been participating
she mayn't have been participating
we mayn't have been participating
you mayn't have been participating
they mayn't have been participating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I participate?
may you participate?
may she participate?
may we participate?
may you participate?
may they participate? 	may I be participating?
may you be participating?
may she be participating?
may we be participating?
may you be participating?
may they be participating? 	may I have participated?
may you have participated?
may she have participated?
may we have participated?
may you have participated?
may they have participated? 	may I have been participating?
may you have been participating?
may she have been participating?
may we have been participating?
may you have been participating?
may they have been participating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I participate?
mayn't you participate?
mayn't she participate?
mayn't we participate?
mayn't you participate?
mayn't they participate? 	mayn't I be participating?
mayn't you be participating?
mayn't she be participating?
mayn't we be participating?
mayn't you be participating?
mayn't they be participating? 	mayn't I have participated?
mayn't you have participated?
mayn't she have participated?
mayn't we have participated?
mayn't you have participated?
mayn't they have participated? 	mayn't I have been participating?
mayn't you have been participating?
mayn't she have been participating?
mayn't we have been participating?
mayn't you have been participating?
mayn't they have been participating?