English verb conjugation
TO CONTRIBUTE

Regular verb: contribute - contributed - contributed

Indicative

Present	Present continuous	Preterite	Preterite continuous
don't I contribute? don't you contribute? doesn't he contribute? don't we contribute? don't you contribute? don't they contribute?	am I not contributing? aren't you contributing? isn't he contributing? aren't we contributing? aren't you contributing? aren't they contributing?	didn't I contribute? didn't you contribute? didn't he contribute? didn't we contribute? didn't you contribute? didn't they contribute?	wasn't I contributing? weren't you contributing? wasn't he contributing? weren't we contributing? weren't you contributing? weren't they contributing?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
haven't I contributed? haven't you contributed? hasn't he contributed? haven't we contributed? haven't you contributed? haven't they contributed?	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?	hadn't I contributed? hadn't you contributed? hadn't he contributed? hadn't we contributed? hadn't you contributed? hadn't they contributed?	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?
Future	Future continuous	Future perfect	Future perfect continuous
won't I contribute? won't you contribute? won't he contribute? won't we contribute? won't you contribute? won't they contribute?	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?	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?	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?

Conditional

Present	Present continuous	Past	Past continuous
wouldn't I contribute? wouldn't you contribute? wouldn't he contribute? wouldn't we contribute? wouldn't you contribute? wouldn't they contribute?	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?	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?	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?

Infinitive

Imperative

Infinitive		Imperative
to contribute		- - -

Participle

Present	Past
contributing	contributed