Conjugação do verbo inglês
CAN CERTIFY

Verbo regular: certify - certified - certified

Afirmação

Forma simple	Forma com V-ing
I can certify you can certify she can certify we can certify you can certify they can certify	I can be certifying you can be certifying she can be certifying we can be certifying you can be certifying they can be certifying
Perfeito	Perfeito com V-ing
I can have certified you can have certified she can have certified we can have certified you can have certified they can have certified	I can have been certifying you can have been certifying she can have been certifying we can have been certifying you can have been certifying they can have been certifying

Negação

Forma simple	Forma com V-ing
I can't certify you can't certify she can't certify we can't certify you can't certify they can't certify	I can't be certifying you can't be certifying she can't be certifying we can't be certifying you can't be certifying they can't be certifying
Perfeito	Perfeito com V-ing
I can't have certified you can't have certified she can't have certified we can't have certified you can't have certified they can't have certified	I can't have been certifying you can't have been certifying she can't have been certifying we can't have been certifying you can't have been certifying they can't have been certifying

Forma interrogativa

Forma simple	Forma com V-ing
can I certify? can you certify? can she certify? can we certify? can you certify? can they certify?	can I be certifying? can you be certifying? can she be certifying? can we be certifying? can you be certifying? can they be certifying?
Perfeito	Perfeito com V-ing
can I have certified? can you have certified? can she have certified? can we have certified? can you have certified? can they have certified?	can I have been certifying? can you have been certifying? can she have been certifying? can we have been certifying? can you have been certifying? can they have been certifying?

Forma interro-Negação

Forma simple	Forma com V-ing
can't I certify? can't you certify? can't she certify? can't we certify? can't you certify? can't they certify?	can't I be certifying? can't you be certifying? can't she be certifying? can't we be certifying? can't you be certifying? can't they be certifying?
Perfeito	Perfeito com V-ing
can't I have certified? can't you have certified? can't she have certified? can't we have certified? can't you have certified? can't they have certified?	can't I have been certifying? can't you have been certifying? can't she have been certifying? can't we have been certifying? can't you have been certifying? can't they have been certifying?