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perder

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to lose

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pensar Stem change e→ie

Pensar changes e to ie when the stem is stressed: pienso, piensas, piensa, pensamos, pensáis, piensan. This is the classic 'boot' for -ar verbs. Similar: cerrar, empezar, negar, sentar.

Conjugation

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Indicativo — Indicativo

Pretérito perfecto simple
Pretérito perfecto simple

Key forms shown. Full table available with Pro.

Subjuntivo — Subjuntivo

Presente de subjuntivo
Presente de subjuntivo

Key forms shown. Full table available with Pro.

Imperativo — Imperativo

Imperativo afirmativo
Imperativo afirmativo

Key forms shown. Full table available with Pro.

Imperativo negativo
Imperativo negativo

Key forms shown. Full table available with Pro.

Formas impersonales

These are the non‑finite verb forms used in combinations and constructions.

  • Infinitivoperder
  • Infinitivo compuestohaber perdido
  • Gerundioperdiendo
  • Gerundio compuestohabiendo perdido
  • Participioperdido

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