Usage Examples
[Present Indicative] Mantengo mi habitación siempre limpia. → I keep my room always clean.
[Present Perfect] He mantenido la calma durante la crisis. → I have maintained my calm during the crisis.
[Imperfect Indicative] Mantenía una buena relación con sus vecinos. → He used to maintain a good relationship with his neighbors.
[Pluperfect Indicative] Ya había mantenido el secreto por mucho tiempo. → I had already kept the secret for a long time.
[Preterite] Mantuve la mirada hasta el final. → I maintained (kept) my gaze until the end.
[Preterite Anterior] Apenas hubo mantenido la postura, se relajó. → As soon as he had maintained his posture, he relaxed.
[Future] Mantendré mi promesa. → I will keep (maintain) my promise.
[Future Perfect] Para el año que viene habré mantenido el ritmo. → By next year I will have maintained the pace.
[Conditional] Mantendría el contacto si tuviera su número. → I would keep in touch (maintain contact) if I had his number.
[Conditional Perfect] Habría mantenido el coche si no fuera tan viejo. → I would have kept the car if it weren't so old.