{
  "chapter_id": "42",
  "slug": "future-perfect-tense",
  "title": "Future Perfect Tense",
  "time_range_sec": [11647, 11805],
  "summary": "The future perfect (futuro perfecto) expresses what will have happened by some point in the future. It uses future haber (habré, habrás, habrá...) + past participle.",
  "suggested_grammar_note_id": null,
  "rules": [
    {
      "title": "Formula",
      "bullets": [
        "Future of haber: habré, habrás, habrá, habremos, habréis, habrán + past participle.",
        "Endings mirror the simple future (-é, -ás, -á, -emos, -éis, -án); only habremos lacks an accent.",
        "haber + participle is inseparable (negatives and pronouns precede haber)."
      ]
    },
    {
      "title": "Time expressions",
      "bullets": [
        "para + time = 'by' (Para el lunes).",
        "dentro de + time = 'within' (Dentro de un año).",
        "These constructions are the most natural triggers for the future perfect."
      ]
    },
    {
      "title": "Usage notes",
      "bullets": [
        "Used for actions guaranteed to be completed by a future point.",
        "Rare in everyday speech; the simple future or 'ir a' is preferred.",
        "Can also express probability about the recent past: 'Habrá llegado ya' (He has probably arrived)."
      ]
    }
  ],
  "examples": [
    {"es": "Para el lunes, yo habré terminado mis tareas.", "en": "By Monday, I will have finished my tasks.", "tags": ["para"]},
    {"es": "Dentro de un año, tú habrás dejado tu trabajo.", "en": "Within a year, you will have left your job.", "tags": ["dentro-de"]},
    {"es": "Para esa fecha, John habrá recibido muchas ofertas.", "en": "By that date, John will have received many offers.", "tags": ["para"]},
    {"es": "Para mañana, nosotros habremos llegado.", "en": "By tomorrow, we will have arrived.", "tags": ["nosotros", "para"]},
    {"es": "Dentro de dos horas, ellos habrán comido.", "en": "Within two hours, they will have eaten.", "tags": ["dentro-de"]},
    {"es": "Para el verano, yo habré aprendido español.", "en": "By summer, I will have learned Spanish.", "tags": ["para"]},
    {"es": "Para diciembre, ella habrá vuelto.", "en": "By December, she will have returned.", "tags": ["irregular-participle"]},
    {"es": "Para esa hora, habremos visto la película.", "en": "By that time, we will have seen the movie.", "tags": ["irregular-participle"]}
  ],
  "vocab": [
    {"es": "para", "en": "by (deadline)", "pos": "phrase"},
    {"es": "dentro de", "en": "within", "pos": "phrase"},
    {"es": "fecha", "en": "date", "pos": "noun"},
    {"es": "oferta", "en": "offer", "pos": "noun"},
    {"es": "dejar", "en": "to leave / quit", "pos": "verb"},
    {"es": "recibir", "en": "to receive", "pos": "verb"}
  ],
  "conjugation_tables": [
    {
      "verb": "haber",
      "tense_id": "ind_futuro",
      "forms": {"yo": "habré", "tu": "habrás", "el": "habrá", "nosotros": "habremos", "vosotros": "habréis", "ellos": "habrán"}
    },
    {
      "verb": "terminar",
      "tense_id": "ind_futuro_perfecto",
      "forms": {"yo": "habré terminado", "tu": "habrás terminado", "el": "habrá terminado", "nosotros": "habremos terminado", "vosotros": "habréis terminado", "ellos": "habrán terminado"}
    },
    {
      "verb": "ver",
      "tense_id": "ind_futuro_perfecto",
      "forms": {"yo": "habré visto", "tu": "habrás visto", "el": "habrá visto", "nosotros": "habremos visto", "vosotros": "habréis visto", "ellos": "habrán visto"}
    }
  ],
  "exercises": [
    {"sentence": "Para el lunes, yo _____ terminado. (haber)", "correct": "habré", "distractor": "habría", "explanation": "Future of haber, yo = habré."},
    {"sentence": "Dentro de un año, tú _____ dejado tu trabajo.", "correct": "habrás", "distractor": "habrías", "explanation": "Tú future of haber = habrás."},
    {"sentence": "Para esa fecha, John _____ recibido muchas ofertas.", "correct": "habrá", "distractor": "habría", "explanation": "Él future of haber = habrá."},
    {"sentence": "Nosotros _____ llegado para mañana.", "correct": "habremos", "distractor": "habríamos", "explanation": "Nosotros future of haber = habremos (no accent)."},
    {"sentence": "Ellos _____ comido dentro de dos horas.", "correct": "habrán", "distractor": "han", "explanation": "Future perfect needs habrán, not present."},
    {"sentence": "Para diciembre, ella habrá _____ . (volver)", "correct": "vuelto", "distractor": "volvido", "explanation": "Volver has irregular participle 'vuelto'."},
    {"sentence": "By summer, I will have learned = Para el verano, yo _____ aprendido.", "correct": "habré", "distractor": "he", "explanation": "Future perfect uses habré, not he (present perfect)."}
  ],
  "caveats": "Captions abbreviated 'habré' to 'AB' and dropped accents. Verified all forms; 'habremos' is the only un-accented form."
}
