Verbo regular: contribute - contributed - contributed
Afirmación
Forma simple
I can contribute you can contribute he can contribute we can contribute you can contribute they can contribute
Forma con 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
Perfecto
I can have contributed you can have contributed he can have contributed we can have contributed you can have contributed they can have contributed
Perfecto con 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
Negación
Forma simple
I cannot contribute you cannot contribute he cannot contribute we cannot contribute you cannot contribute they cannot contribute
Forma con V-ing
I cannot be contributing you cannot be contributing he cannot be contributing we cannot be contributing you cannot be contributing they cannot be contributing
Perfecto
I cannot have contributed you cannot have contributed he cannot have contributed we cannot have contributed you cannot have contributed they cannot have contributed
Perfecto con V-ing
I cannot have been contributing you cannot have been contributing he cannot have been contributing we cannot have been contributing you cannot have been contributing they cannot 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 con 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?
Perfecto
can I have contributed? can you have contributed? can he have contributed? can we have contributed? can you have contributed? can they have contributed?
Perfecto con 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-negativa
Forma simple
can I not contribute? can you not contribute? can he not contribute? can we not contribute? can you not contribute? can they not contribute?
Forma con V-ing
can I not be contributing? can you not be contributing? can he not be contributing? can we not be contributing? can you not be contributing? can they not be contributing?
Perfecto
can I not have contributed? can you not have contributed? can he not have contributed? can we not have contributed? can you not have contributed? can they not have contributed?
Perfecto con V-ing
can I not have been contributing? can you not have been contributing? can he not have been contributing? can we not have been contributing? can you not have been contributing? can they not have been contributing?