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