Verbo regular: contribute - contributed - contributed
Indicativo
Presente
don't I contribute? don't you contribute? doesn't he contribute? don't we contribute? don't you contribute? don't they contribute?
Presente continuo
am I not contributing? aren't you contributing? isn't he contributing? aren't we contributing? aren't you contributing? aren't they contributing?
Pretérito
didn't I contribute? didn't you contribute? didn't he contribute? didn't we contribute? didn't you contribute? didn't they contribute?
Pretérito continuo
wasn't I contributing? weren't you contributing? wasn't he contributing? weren't we contributing? weren't you contributing? weren't they contributing?
Presente perfecto
haven't I contributed? haven't you contributed? hasn't he contributed? haven't we contributed? haven't you contributed? haven't they contributed?
Presente perfecto continuo
haven't I been contributing? haven't you been contributing? hasn't he been contributing? haven't we been contributing? haven't you been contributing? haven't they been contributing?
Pluscuamperfecto
hadn't I contributed? hadn't you contributed? hadn't he contributed? hadn't we contributed? hadn't you contributed? hadn't they contributed?
Pluscuamperfecto continuo
hadn't I been contributing? hadn't you been contributing? hadn't he been contributing? hadn't we been contributing? hadn't you been contributing? hadn't they been contributing?
Futuro simple
won't I contribute? won't you contribute? won't he contribute? won't we contribute? won't you contribute? won't they contribute?
Futuro continuo
won't I be contributing? won't you be contributing? won't he be contributing? won't we be contributing? won't you be contributing? won't they be contributing?
Futuro perfecto
won't I have contributed? won't you have contributed? won't he have contributed? won't we have contributed? won't you have contributed? won't they have contributed?
Futuro perfecto contínuo
won't I have been contributing? won't you have been contributing? won't he have been contributing? won't we have been contributing? won't you have been contributing? won't they have been contributing?
Condicional
Presente
wouldn't I contribute? wouldn't you contribute? wouldn't he contribute? wouldn't we contribute? wouldn't you contribute? wouldn't they contribute?
Presente continuo
wouldn't I be contributing? wouldn't you be contributing? wouldn't he be contributing? wouldn't we be contributing? wouldn't you be contributing? wouldn't they be contributing?
Passado
wouldn't I have contributed? wouldn't you have contributed? wouldn't he have contributed? wouldn't we have contributed? wouldn't you have contributed? wouldn't they have contributed?
Passado continuo
wouldn't I have been contributing? wouldn't you have been contributing? wouldn't he have been contributing? wouldn't we have been contributing? wouldn't you have been contributing? wouldn't they have been contributing?