English verb conjugation
MAY SMILE

Regular verb: smile - smiled - smiled

Affirmation

Simple form	V-ing form
I may smile you may smile he may smile we may smile you may smile they may smile	I may be smiling you may be smiling he may be smiling we may be smiling you may be smiling they may be smiling
Perfect	V-ing perfect
I may have smiled you may have smiled he may have smiled we may have smiled you may have smiled they may have smiled	I may have been smiling you may have been smiling he may have been smiling we may have been smiling you may have been smiling they may have been smiling

Negation

Simple form	V-ing form
I mayn't smile you mayn't smile he mayn't smile we mayn't smile you mayn't smile they mayn't smile	I mayn't be smiling you mayn't be smiling he mayn't be smiling we mayn't be smiling you mayn't be smiling they mayn't be smiling
Perfect	V-ing perfect
I mayn't have smiled you mayn't have smiled he mayn't have smiled we mayn't have smiled you mayn't have smiled they mayn't have smiled	I mayn't have been smiling you mayn't have been smiling he mayn't have been smiling we mayn't have been smiling you mayn't have been smiling they mayn't have been smiling

Interrogative form

Simple form	V-ing form
may I smile? may you smile? may he smile? may we smile? may you smile? may they smile?	may I be smiling? may you be smiling? may he be smiling? may we be smiling? may you be smiling? may they be smiling?
Perfect	V-ing perfect
may I have smiled? may you have smiled? may he have smiled? may we have smiled? may you have smiled? may they have smiled?	may I have been smiling? may you have been smiling? may he have been smiling? may we have been smiling? may you have been smiling? may they have been smiling?

Interro-negative form

Simple form	V-ing form
mayn't I smile? mayn't you smile? mayn't he smile? mayn't we smile? mayn't you smile? mayn't they smile?	mayn't I be smiling? mayn't you be smiling? mayn't he be smiling? mayn't we be smiling? mayn't you be smiling? mayn't they be smiling?
Perfect	V-ing perfect
mayn't I have smiled? mayn't you have smiled? mayn't he have smiled? mayn't we have smiled? mayn't you have smiled? mayn't they have smiled?	mayn't I have been smiling? mayn't you have been smiling? mayn't he have been smiling? mayn't we have been smiling? mayn't you have been smiling? mayn't they have been smiling?