Verbo regular: contribute - contributed - contributed
Afirmação
Forma simple
I can contribute you can contribute he can contribute we can contribute you can contribute they can contribute
Forma com V-ing
I can be contributing you can be contributing he can be contributing we can be contributing you can be contributing they can be contributing
Perfeito
I can have contributed you can have contributed he can have contributed we can have contributed you can have contributed they can have contributed
Perfeito com V-ing
I can have been contributing you can have been contributing he can have been contributing we can have been contributing you can have been contributing they can have been contributing
Negação
Forma simple
I can't contribute you can't contribute he can't contribute we can't contribute you can't contribute they can't contribute
Forma com V-ing
I can't be contributing you can't be contributing he can't be contributing we can't be contributing you can't be contributing they can't be contributing
Perfeito
I can't have contributed you can't have contributed he can't have contributed we can't have contributed you can't have contributed they can't have contributed
Perfeito com V-ing
I can't have been contributing you can't have been contributing he can't have been contributing we can't have been contributing you can't have been contributing they can't have been contributing
Forma interrogativa
Forma simple
can I contribute? can you contribute? can he contribute? can we contribute? can you contribute? can they contribute?
Forma com V-ing
can I be contributing? can you be contributing? can he be contributing? can we be contributing? can you be contributing? can they be contributing?
Perfeito
can I have contributed? can you have contributed? can he have contributed? can we have contributed? can you have contributed? can they have contributed?
Perfeito com V-ing
can I have been contributing? can you have been contributing? can he have been contributing? can we have been contributing? can you have been contributing? can they have been contributing?
Forma interro-Negação
Forma simple
can't I contribute? can't you contribute? can't he contribute? can't we contribute? can't you contribute? can't they contribute?
Forma com V-ing
can't I be contributing? can't you be contributing? can't he be contributing? can't we be contributing? can't you be contributing? can't they be contributing?
Perfeito
can't I have contributed? can't you have contributed? can't he have contributed? can't we have contributed? can't you have contributed? can't they have contributed?
Perfeito com V-ing
can't I have been contributing? can't you have been contributing? can't he have been contributing? can't we have been contributing? can't you have been contributing? can't they have been contributing?