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