I can undergo you can undergo he can undergo we can undergo you can undergo they can undergo
Forma com V-ing
I can be undergoing you can be undergoing he can be undergoing we can be undergoing you can be undergoing they can be undergoing
Perfeito
I can have undergone you can have undergone he can have undergone we can have undergone you can have undergone they can have undergone
Perfeito com V-ing
I can have been undergoing you can have been undergoing he can have been undergoing we can have been undergoing you can have been undergoing they can have been undergoing
Negação
Forma simple
I can't undergo you can't undergo he can't undergo we can't undergo you can't undergo they can't undergo
Forma com V-ing
I can't be undergoing you can't be undergoing he can't be undergoing we can't be undergoing you can't be undergoing they can't be undergoing
Perfeito
I can't have undergone you can't have undergone he can't have undergone we can't have undergone you can't have undergone they can't have undergone
Perfeito com V-ing
I can't have been undergoing you can't have been undergoing he can't have been undergoing we can't have been undergoing you can't have been undergoing they can't have been undergoing
Forma interrogativa
Forma simple
can I undergo? can you undergo? can he undergo? can we undergo? can you undergo? can they undergo?
Forma com V-ing
can I be undergoing? can you be undergoing? can he be undergoing? can we be undergoing? can you be undergoing? can they be undergoing?
Perfeito
can I have undergone? can you have undergone? can he have undergone? can we have undergone? can you have undergone? can they have undergone?
Perfeito com V-ing
can I have been undergoing? can you have been undergoing? can he have been undergoing? can we have been undergoing? can you have been undergoing? can they have been undergoing?
Forma interro-Negação
Forma simple
can't I undergo? can't you undergo? can't he undergo? can't we undergo? can't you undergo? can't they undergo?
Forma com V-ing
can't I be undergoing? can't you be undergoing? can't he be undergoing? can't we be undergoing? can't you be undergoing? can't they be undergoing?
Perfeito
can't I have undergone? can't you have undergone? can't he have undergone? can't we have undergone? can't you have undergone? can't they have undergone?
Perfeito com V-ing
can't I have been undergoing? can't you have been undergoing? can't he have been undergoing? can't we have been undergoing? can't you have been undergoing? can't they have been undergoing?