contribuir
to contribute
Todos contribuimos al regalo.
We all chipped in for the gift.
contribuir present indicative
Habitual and ongoing actions in the present.
contribuir present continuous
Action in progress right now. Periphrastic: estar (present) + gerund.
contribuir preterite
Completed actions at a specific moment in the past.
contribuir imperfect
Habitual past actions, descriptions, background.
contribuir present perfect
Completed actions with present relevance. Auxiliary haber + participle.
contribuir future
Actions yet to happen.
contribuir informal future
Near-future plans. Periphrastic: ir (present) + a + infinitive.
contribuir future perfect
Action that will have been completed by a future moment. Auxiliary haber (future) + participle.
contribuir conditional
Hypothetical or polite would-actions.
contribuir conditional perfect
Hypothetical past: would have done. Auxiliary haber (conditional) + participle.
contribuir pluperfect
An action completed before another past action.
contribuir subjunctive present
Desires, doubts, and hypotheticals in the present.
contribuir subjunctive imperfect
Past subjunctive: desires, doubts, hypotheticals in the past.
contribuir subjunctive present perfect
Completed actions in subjunctive contexts.
contribuir subjunctive pluperfect
Past-perfect actions in subjunctive contexts.
contribuir imperative (affirmative)
Affirmative commands.
contribuir imperative (negative)
Negative commands: borrows subjunctive present.