Conjugación del verbo inglés
MAY CERTIFY

Verbo regular: certify - certified - certified

Afirmación

Forma simple	Forma con V-ing
I may certify you may certify she may certify we may certify you may certify they may certify	I may be certifying you may be certifying she may be certifying we may be certifying you may be certifying they may be certifying
Perfecto	Perfecto con V-ing
I may have certified you may have certified she may have certified we may have certified you may have certified they may have certified	I may have been certifying you may have been certifying she may have been certifying we may have been certifying you may have been certifying they may have been certifying

Negación

Forma simple	Forma con V-ing
I mayn't certify you mayn't certify she mayn't certify we mayn't certify you mayn't certify they mayn't certify	I mayn't be certifying you mayn't be certifying she mayn't be certifying we mayn't be certifying you mayn't be certifying they mayn't be certifying
Perfecto	Perfecto con V-ing
I mayn't have certified you mayn't have certified she mayn't have certified we mayn't have certified you mayn't have certified they mayn't have certified	I mayn't have been certifying you mayn't have been certifying she mayn't have been certifying we mayn't have been certifying you mayn't have been certifying they mayn't have been certifying

Forma interrogativa

Forma simple	Forma con V-ing
may I certify? may you certify? may she certify? may we certify? may you certify? may they certify?	may I be certifying? may you be certifying? may she be certifying? may we be certifying? may you be certifying? may they be certifying?
Perfecto	Perfecto con V-ing
may I have certified? may you have certified? may she have certified? may we have certified? may you have certified? may they have certified?	may I have been certifying? may you have been certifying? may she have been certifying? may we have been certifying? may you have been certifying? may they have been certifying?

Forma interro-negativa

Forma simple	Forma con V-ing
mayn't I certify? mayn't you certify? mayn't she certify? mayn't we certify? mayn't you certify? mayn't they certify?	mayn't I be certifying? mayn't you be certifying? mayn't she be certifying? mayn't we be certifying? mayn't you be certifying? mayn't they be certifying?
Perfecto	Perfecto con V-ing
mayn't I have certified? mayn't you have certified? mayn't she have certified? mayn't we have certified? mayn't you have certified? mayn't they have certified?	mayn't I have been certifying? mayn't you have been certifying? mayn't she have been certifying? mayn't we have been certifying? mayn't you have been certifying? mayn't they have been certifying?