English verb conjugation
MAY GRATE

Regular verb: grate - grated - grated

Affirmation

Simple form	V-ing form
I may grate you may grate he may grate we may grate you may grate they may grate	I may be grating you may be grating he may be grating we may be grating you may be grating they may be grating
Perfect	V-ing perfect
I may have grated you may have grated he may have grated we may have grated you may have grated they may have grated	I may have been grating you may have been grating he may have been grating we may have been grating you may have been grating they may have been grating

Negation

Simple form	V-ing form
I mayn't grate you mayn't grate he mayn't grate we mayn't grate you mayn't grate they mayn't grate	I mayn't be grating you mayn't be grating he mayn't be grating we mayn't be grating you mayn't be grating they mayn't be grating
Perfect	V-ing perfect
I mayn't have grated you mayn't have grated he mayn't have grated we mayn't have grated you mayn't have grated they mayn't have grated	I mayn't have been grating you mayn't have been grating he mayn't have been grating we mayn't have been grating you mayn't have been grating they mayn't have been grating

Interrogative form

Simple form	V-ing form
may I grate? may you grate? may he grate? may we grate? may you grate? may they grate?	may I be grating? may you be grating? may he be grating? may we be grating? may you be grating? may they be grating?
Perfect	V-ing perfect
may I have grated? may you have grated? may he have grated? may we have grated? may you have grated? may they have grated?	may I have been grating? may you have been grating? may he have been grating? may we have been grating? may you have been grating? may they have been grating?

Interro-negative form

Simple form	V-ing form
mayn't I grate? mayn't you grate? mayn't he grate? mayn't we grate? mayn't you grate? mayn't they grate?	mayn't I be grating? mayn't you be grating? mayn't he be grating? mayn't we be grating? mayn't you be grating? mayn't they be grating?
Perfect	V-ing perfect
mayn't I have grated? mayn't you have grated? mayn't he have grated? mayn't we have grated? mayn't you have grated? mayn't they have grated?	mayn't I have been grating? mayn't you have been grating? mayn't he have been grating? mayn't we have been grating? mayn't you have been grating? mayn't they have been grating?