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