English verb conjugation
MAY SMILE

Regular verb: smile - smiled - smiled

Affirmation

Simple form	V-ing form
I may smile you may smile she may smile we may smile you may smile they may smile	I may be smiling you may be smiling she 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 she 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 she 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 may not smile you may not smile she may not smile we may not smile you may not smile they may not smile	I may not be smiling you may not be smiling she may not be smiling we may not be smiling you may not be smiling they may not be smiling
Perfect	V-ing perfect
I may not have smiled you may not have smiled she may not have smiled we may not have smiled you may not have smiled they may not have smiled	I may not have been smiling you may not have been smiling she may not have been smiling we may not have been smiling you may not have been smiling they may not have been smiling

Interrogative form

Simple form	V-ing form
may I smile? may you smile? may she smile? may we smile? may you smile? may they smile?	may I be smiling? may you be smiling? may she 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 she 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 she 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
may I not smile? may you not smile? may she not smile? may we not smile? may you not smile? may they not smile?	may I not be smiling? may you not be smiling? may she not be smiling? may we not be smiling? may you not be smiling? may they not be smiling?
Perfect	V-ing perfect
may I not have smiled? may you not have smiled? may she not have smiled? may we not have smiled? may you not have smiled? may they not have smiled?	may I not have been smiling? may you not have been smiling? may she not have been smiling? may we not have been smiling? may you not have been smiling? may they not have been smiling?