I may volunteer you may volunteer she may volunteer we may volunteer you may volunteer they may volunteer
V-ing form
I may be volunteering you may be volunteering she may be volunteering we may be volunteering you may be volunteering they may be volunteering
Perfect
I may have volunteered you may have volunteered she may have volunteered we may have volunteered you may have volunteered they may have volunteered
V-ing perfect
I may have been volunteering you may have been volunteering she may have been volunteering we may have been volunteering you may have been volunteering they may have been volunteering
Negation
Simple form
I may not volunteer you may not volunteer she may not volunteer we may not volunteer you may not volunteer they may not volunteer
V-ing form
I may not be volunteering you may not be volunteering she may not be volunteering we may not be volunteering you may not be volunteering they may not be volunteering
Perfect
I may not have volunteered you may not have volunteered she may not have volunteered we may not have volunteered you may not have volunteered they may not have volunteered
V-ing perfect
I may not have been volunteering you may not have been volunteering she may not have been volunteering we may not have been volunteering you may not have been volunteering they may not have been volunteering
Interrogative form
Simple form
may I volunteer? may you volunteer? may she volunteer? may we volunteer? may you volunteer? may they volunteer?
V-ing form
may I be volunteering? may you be volunteering? may she be volunteering? may we be volunteering? may you be volunteering? may they be volunteering?
Perfect
may I have volunteered? may you have volunteered? may she have volunteered? may we have volunteered? may you have volunteered? may they have volunteered?
V-ing perfect
may I have been volunteering? may you have been volunteering? may she have been volunteering? may we have been volunteering? may you have been volunteering? may they have been volunteering?
Interro-negative form
Simple form
may I not volunteer? may you not volunteer? may she not volunteer? may we not volunteer? may you not volunteer? may they not volunteer?
V-ing form
may I not be volunteering? may you not be volunteering? may she not be volunteering? may we not be volunteering? may you not be volunteering? may they not be volunteering?
Perfect
may I not have volunteered? may you not have volunteered? may she not have volunteered? may we not have volunteered? may you not have volunteered? may they not have volunteered?
V-ing perfect
may I not have been volunteering? may you not have been volunteering? may she not have been volunteering? may we not have been volunteering? may you not have been volunteering? may they not have been volunteering?