Verbo regolare: contribute - contributed - contributed
Affermazione
Forma semplice
I must contribute you must contribute he must contribute we must contribute you must contribute they must contribute
Forma con V-ing
I must be contributing you must be contributing he must be contributing we must be contributing you must be contributing they must be contributing
Perfetto
I must have contributed you must have contributed he must have contributed we must have contributed you must have contributed they must have contributed
Perfetto con V-ing
I must have been contributing you must have been contributing he must have been contributing we must have been contributing you must have been contributing they must have been contributing
Negazione
Forma semplice
I must not contribute you must not contribute he must not contribute we must not contribute you must not contribute they must not contribute
Forma con V-ing
I must not be contributing you must not be contributing he must not be contributing we must not be contributing you must not be contributing they must not be contributing
Perfetto
I must not have contributed you must not have contributed he must not have contributed we must not have contributed you must not have contributed they must not have contributed
Perfetto con V-ing
I must not have been contributing you must not have been contributing he must not have been contributing we must not have been contributing you must not have been contributing they must not have been contributing
Forma interrogativa
Forma semplice
must I contribute? must you contribute? must he contribute? must we contribute? must you contribute? must they contribute?
Forma con V-ing
must I be contributing? must you be contributing? must he be contributing? must we be contributing? must you be contributing? must they be contributing?
Perfetto
must I have contributed? must you have contributed? must he have contributed? must we have contributed? must you have contributed? must they have contributed?
Perfetto con V-ing
must I have been contributing? must you have been contributing? must he have been contributing? must we have been contributing? must you have been contributing? must they have been contributing?
Forma interro-negativa
Forma semplice
must I not contribute? must you not contribute? must he not contribute? must we not contribute? must you not contribute? must they not contribute?
Forma con V-ing
must I not be contributing? must you not be contributing? must he not be contributing? must we not be contributing? must you not be contributing? must they not be contributing?
Perfetto
must I not have contributed? must you not have contributed? must he not have contributed? must we not have contributed? must you not have contributed? must they not have contributed?
Perfetto con V-ing
must I not have been contributing? must you not have been contributing? must he not have been contributing? must we not have been contributing? must you not have been contributing? must they not have been contributing?