I may fast you may fast she may fast we may fast you may fast they may fast
V-ing form
I may be fasting you may be fasting she may be fasting we may be fasting you may be fasting they may be fasting
Perfect
I may have fasted you may have fasted she may have fasted we may have fasted you may have fasted they may have fasted
V-ing perfect
I may have been fasting you may have been fasting she may have been fasting we may have been fasting you may have been fasting they may have been fasting
Negation
Simple form
I mayn't fast you mayn't fast she mayn't fast we mayn't fast you mayn't fast they mayn't fast
V-ing form
I mayn't be fasting you mayn't be fasting she mayn't be fasting we mayn't be fasting you mayn't be fasting they mayn't be fasting
Perfect
I mayn't have fasted you mayn't have fasted she mayn't have fasted we mayn't have fasted you mayn't have fasted they mayn't have fasted
V-ing perfect
I mayn't have been fasting you mayn't have been fasting she mayn't have been fasting we mayn't have been fasting you mayn't have been fasting they mayn't have been fasting
Interrogative form
Simple form
may I fast? may you fast? may she fast? may we fast? may you fast? may they fast?
V-ing form
may I be fasting? may you be fasting? may she be fasting? may we be fasting? may you be fasting? may they be fasting?
Perfect
may I have fasted? may you have fasted? may she have fasted? may we have fasted? may you have fasted? may they have fasted?
V-ing perfect
may I have been fasting? may you have been fasting? may she have been fasting? may we have been fasting? may you have been fasting? may they have been fasting?
Interro-negative form
Simple form
mayn't I fast? mayn't you fast? mayn't she fast? mayn't we fast? mayn't you fast? mayn't they fast?
V-ing form
mayn't I be fasting? mayn't you be fasting? mayn't she be fasting? mayn't we be fasting? mayn't you be fasting? mayn't they be fasting?
Perfect
mayn't I have fasted? mayn't you have fasted? mayn't she have fasted? mayn't we have fasted? mayn't you have fasted? mayn't they have fasted?
V-ing perfect
mayn't I have been fasting? mayn't you have been fasting? mayn't she have been fasting? mayn't we have been fasting? mayn't you have been fasting? mayn't they have been fasting?