alterar to alter, change, disturb, upsetImperfect Subjunctive / Imperfecto de Subjuntivo – Version 1yoalteraratúalterarasél / Ud.alteraranosotrosalteráramosvosotrosalteraraisellos / Uds.alteraranImperfect Subjunctive / Imperfecto de Subjuntivo – Version 2yoalterasetúalterasesél / Ud.alterasenosotrosalterásemosvosotrosalteraseisellos / Uds.alterasen
Other Tenses / Moods of Alterar Simple Tenses Present Tense Imperfect Tense Preterite (Past Tense) Future Tense Conditional Tense Subjunctive Tense Imperfect Subjunctive Future Subjunctive Imperative (Command) Past Participle & Gerund Compound Tenses Present Perfect Past Perfect Past Anterior (Preterite Perfect) Future Perfect Conditional Perfect Present Perfect Subjunctive Pluperfect Subjunctive Future Perfect Subjunctive