{
  "id": "wte2-alphabet-review",
  "book_id": "wte2",
  "name": "Alphabet Review A-Z",
  "description": "Complete alphabet review with one word per letter from A to Z",
  "difficulty": "beginner",
  "language": "en-US",
  "chapter_number": "review",
  "metadata": {
    "version": "1.0",
    "created": "2025-11-07",
    "updated": "2025-11-07",
    "source": "Welcome to English 2 - Alphabet Review",
    "target_level": "beginner",
    "estimated_hours": 2,
    "prerequisites": ["wte2-1", "wte2-2", "wte2-3"],
    "learning_objectives": [
      "Review all 26 letters of the alphabet (A-Z)",
      "Recognize and identify each letter",
      "Match letters to their key vocabulary words",
      "Practice pronunciation of alphabet letters",
      "Associate letters with familiar words"
    ],
    "content_tags": ["alphabet", "review", "letters", "phonics", "vocabulary", "A-Z"],
    "completion_criteria": {
      "vocabulary_mastery": 85,
      "quiz_score": 80,
      "games_completed": 1
    }
  },
  "alphabet": {
    "A": {
      "letter": "A",
      "word": "ax",
      "translation": "斧头",
      "type": "noun",
      "pronunciation": "/æks/",
      "phonics_sound": "/æ/"
    },
    "B": {
      "letter": "B",
      "word": "bear",
      "translation": "熊",
      "type": "noun",
      "pronunciation": "/ber/",
      "phonics_sound": "/b/"
    },
    "C": {
      "letter": "C",
      "word": "computer",
      "translation": "电脑",
      "type": "noun",
      "pronunciation": "/kəmˈpjuːtər/",
      "phonics_sound": "/k/"
    },
    "D": {
      "letter": "D",
      "word": "doll",
      "translation": "玩偶；洋娃娃",
      "type": "noun",
      "pronunciation": "/dɑːl/",
      "phonics_sound": "/d/"
    },
    "E": {
      "letter": "E",
      "word": "elbow",
      "translation": "肘部；手肘",
      "type": "noun",
      "pronunciation": "/ˈelboʊ/",
      "phonics_sound": "/e/"
    },
    "F": {
      "letter": "F",
      "word": "fan",
      "translation": "风扇；扇子",
      "type": "noun",
      "pronunciation": "/fæn/",
      "phonics_sound": "/f/"
    },
    "G": {
      "letter": "G",
      "word": "gorilla",
      "translation": "大猩猩",
      "type": "noun",
      "pronunciation": "/ɡəˈrɪlə/",
      "phonics_sound": "/ɡ/"
    },
    "H": {
      "letter": "H",
      "word": "house",
      "translation": "房子",
      "type": "noun",
      "pronunciation": "/haʊs/",
      "phonics_sound": "/h/"
    },
    "I": {
      "letter": "I",
      "word": "insect",
      "translation": "昆虫",
      "type": "noun",
      "pronunciation": "/ˈɪnsekt/",
      "phonics_sound": "/ɪ/"
    },
    "J": {
      "letter": "J",
      "word": "jacket",
      "translation": "夹克",
      "type": "noun",
      "pronunciation": "/ˈdʒækɪt/",
      "phonics_sound": "/dʒ/"
    },
    "K": {
      "letter": "K",
      "word": "kangaroo",
      "translation": "袋鼠",
      "type": "noun",
      "pronunciation": "/ˌkæŋɡəˈruː/",
      "phonics_sound": "/k/"
    },
    "L": {
      "letter": "L",
      "word": "leaf",
      "translation": "叶子",
      "type": "noun",
      "pronunciation": "/liːf/",
      "phonics_sound": "/l/"
    },
    "M": {
      "letter": "M",
      "word": "monkey",
      "translation": "猴子",
      "type": "noun",
      "pronunciation": "/ˈmʌŋki/",
      "phonics_sound": "/m/"
    },
    "N": {
      "letter": "N",
      "word": "nest",
      "translation": "鸟巢",
      "type": "noun",
      "pronunciation": "/nest/",
      "phonics_sound": "/n/"
    },
    "O": {
      "letter": "O",
      "word": "octopus",
      "translation": "章鱼",
      "type": "noun",
      "pronunciation": "/ˈɑːktəpəs/",
      "phonics_sound": "/ɑː/"
    },
    "P": {
      "letter": "P",
      "word": "panda",
      "translation": "熊猫",
      "type": "noun",
      "pronunciation": "/ˈpændə/",
      "phonics_sound": "/p/"
    },
    "Q": {
      "letter": "Q",
      "word": "quilt",
      "translation": "被子",
      "type": "noun",
      "pronunciation": "/kwɪlt/",
      "phonics_sound": "/kw/"
    },
    "R": {
      "letter": "R",
      "word": "rabbit",
      "translation": "兔子",
      "type": "noun",
      "pronunciation": "/ˈræbɪt/",
      "phonics_sound": "/r/"
    },
    "S": {
      "letter": "S",
      "word": "sun",
      "translation": "太阳",
      "type": "noun",
      "pronunciation": "/sʌn/",
      "phonics_sound": "/s/"
    },
    "T": {
      "letter": "T",
      "word": "turtle",
      "translation": "乌龟",
      "type": "noun",
      "pronunciation": "/ˈtɜːrtl/",
      "phonics_sound": "/t/"
    },
    "U": {
      "letter": "U",
      "word": "umbrella",
      "translation": "雨伞",
      "type": "noun",
      "pronunciation": "/ʌmˈbrelə/",
      "phonics_sound": "/ʌ/"
    },
    "V": {
      "letter": "V",
      "word": "violin",
      "translation": "小提琴",
      "type": "noun",
      "pronunciation": "/ˌvaɪəˈlɪn/",
      "phonics_sound": "/v/"
    },
    "W": {
      "letter": "W",
      "word": "wolf",
      "translation": "狼",
      "type": "noun",
      "pronunciation": "/wʊlf/",
      "phonics_sound": "/w/"
    },
    "X": {
      "letter": "X",
      "word": "fox",
      "translation": "狐狸",
      "type": "noun",
      "pronunciation": "/fɑːks/",
      "phonics_sound": "/ks/"
    },
    "Y": {
      "letter": "Y",
      "word": "yogurt",
      "translation": "酸奶",
      "type": "noun",
      "pronunciation": "/ˈjoʊɡərt/",
      "phonics_sound": "/j/"
    },
    "Z": {
      "letter": "Z",
      "word": "zebra",
      "translation": "斑马",
      "type": "noun",
      "pronunciation": "/ˈziːbrə/",
      "phonics_sound": "/z/"
    }
  },
  "vocabulary": {
    "ax": { "user_language": "斧头", "type": "noun", "pronunciation": "/æks/" },
    "bear": { "user_language": "熊", "type": "noun", "pronunciation": "/ber/" },
    "computer": { "user_language": "电脑", "type": "noun", "pronunciation": "/kəmˈpjuːtər/" },
    "doll": { "user_language": "玩偶；洋娃娃", "type": "noun", "pronunciation": "/dɑːl/" },
    "elbow": { "user_language": "肘部；手肘", "type": "noun", "pronunciation": "/ˈelboʊ/" },
    "fan": { "user_language": "风扇；扇子", "type": "noun", "pronunciation": "/fæn/" },
    "gorilla": { "user_language": "大猩猩", "type": "noun", "pronunciation": "/ɡəˈrɪlə/" },
    "house": { "user_language": "房子", "type": "noun", "pronunciation": "/haʊs/" },
    "insect": { "user_language": "昆虫", "type": "noun", "pronunciation": "/ˈɪnsekt/" },
    "jacket": { "user_language": "夹克", "type": "noun", "pronunciation": "/ˈdʒækɪt/" },
    "kangaroo": { "user_language": "袋鼠", "type": "noun", "pronunciation": "/ˌkæŋɡəˈruː/" },
    "leaf": { "user_language": "叶子", "type": "noun", "pronunciation": "/liːf/" },
    "monkey": { "user_language": "猴子", "type": "noun", "pronunciation": "/ˈmʌŋki/" },
    "nest": { "user_language": "鸟巢", "type": "noun", "pronunciation": "/nest/" },
    "octopus": { "user_language": "章鱼", "type": "noun", "pronunciation": "/ˈɑːktəpəs/" },
    "panda": { "user_language": "熊猫", "type": "noun", "pronunciation": "/ˈpændə/" },
    "quilt": { "user_language": "被子", "type": "noun", "pronunciation": "/kwɪlt/" },
    "rabbit": { "user_language": "兔子", "type": "noun", "pronunciation": "/ˈræbɪt/" },
    "sun": { "user_language": "太阳", "type": "noun", "pronunciation": "/sʌn/" },
    "turtle": { "user_language": "乌龟", "type": "noun", "pronunciation": "/ˈtɜːrtl/" },
    "umbrella": { "user_language": "雨伞", "type": "noun", "pronunciation": "/ʌmˈbrelə/" },
    "violin": { "user_language": "小提琴", "type": "noun", "pronunciation": "/ˌvaɪəˈlɪn/" },
    "wolf": { "user_language": "狼", "type": "noun", "pronunciation": "/wʊlf/" },
    "fox": { "user_language": "狐狸", "type": "noun", "pronunciation": "/fɑːks/" },
    "yogurt": { "user_language": "酸奶", "type": "noun", "pronunciation": "/ˈjoʊɡərt/" },
    "zebra": { "user_language": "斑马", "type": "noun", "pronunciation": "/ˈziːbrə/" }
  },
  "phrases": {
    "A is for ax": { "user_language": "A代表斧头", "context": "alphabet", "pronunciation": "/eɪ ɪz fɔːr æks/" },
    "B is for bear": { "user_language": "B代表熊", "context": "alphabet", "pronunciation": "/biː ɪz fɔːr ber/" },
    "C is for computer": { "user_language": "C代表电脑", "context": "alphabet", "pronunciation": "/siː ɪz fɔːr kəmˈpjuːtər/" },
    "D is for doll": { "user_language": "D代表玩偶", "context": "alphabet", "pronunciation": "/diː ɪz fɔːr dɑːl/" },
    "E is for elbow": { "user_language": "E代表手肘", "context": "alphabet", "pronunciation": "/iː ɪz fɔːr ˈelboʊ/" },
    "F is for fan": { "user_language": "F代表扇子", "context": "alphabet", "pronunciation": "/ef ɪz fɔːr fæn/" },
    "G is for gorilla": { "user_language": "G代表大猩猩", "context": "alphabet", "pronunciation": "/dʒiː ɪz fɔːr ɡəˈrɪlə/" },
    "H is for house": { "user_language": "H代表房子", "context": "alphabet", "pronunciation": "/eɪtʃ ɪz fɔːr haʊs/" },
    "I is for insect": { "user_language": "I代表昆虫", "context": "alphabet", "pronunciation": "/aɪ ɪz fɔːr ˈɪnsekt/" },
    "J is for jacket": { "user_language": "J代表夹克", "context": "alphabet", "pronunciation": "/dʒeɪ ɪz fɔːr ˈdʒækɪt/" },
    "K is for kangaroo": { "user_language": "K代表袋鼠", "context": "alphabet", "pronunciation": "/keɪ ɪz fɔːr ˌkæŋɡəˈruː/" },
    "L is for leaf": { "user_language": "L代表叶子", "context": "alphabet", "pronunciation": "/el ɪz fɔːr liːf/" },
    "M is for monkey": { "user_language": "M代表猴子", "context": "alphabet", "pronunciation": "/em ɪz fɔːr ˈmʌŋki/" },
    "N is for nest": { "user_language": "N代表鸟巢", "context": "alphabet", "pronunciation": "/en ɪz fɔːr nest/" },
    "O is for octopus": { "user_language": "O代表章鱼", "context": "alphabet", "pronunciation": "/oʊ ɪz fɔːr ˈɑːktəpəs/" },
    "P is for panda": { "user_language": "P代表熊猫", "context": "alphabet", "pronunciation": "/piː ɪz fɔːr ˈpændə/" },
    "Q is for quilt": { "user_language": "Q代表被子", "context": "alphabet", "pronunciation": "/kjuː ɪz fɔːr kwɪlt/" },
    "R is for rabbit": { "user_language": "R代表兔子", "context": "alphabet", "pronunciation": "/ɑːr ɪz fɔːr ˈræbɪt/" },
    "S is for sun": { "user_language": "S代表太阳", "context": "alphabet", "pronunciation": "/es ɪz fɔːr sʌn/" },
    "T is for turtle": { "user_language": "T代表乌龟", "context": "alphabet", "pronunciation": "/tiː ɪz fɔːr ˈtɜːrtl/" },
    "U is for umbrella": { "user_language": "U代表雨伞", "context": "alphabet", "pronunciation": "/juː ɪz fɔːr ʌmˈbrelə/" },
    "V is for violin": { "user_language": "V代表小提琴", "context": "alphabet", "pronunciation": "/viː ɪz fɔːr ˌvaɪəˈlɪn/" },
    "W is for wolf": { "user_language": "W代表狼", "context": "alphabet", "pronunciation": "/ˈdʌbəljuː ɪz fɔːr wʊlf/" },
    "X is for fox": { "user_language": "X代表狐狸", "context": "alphabet", "pronunciation": "/eks ɪz fɔːr fɑːks/" },
    "Y is for yogurt": { "user_language": "Y代表酸奶", "context": "alphabet", "pronunciation": "/waɪ ɪz fɔːr ˈjoʊɡərt/" },
    "Z is for zebra": { "user_language": "Z代表斑马", "context": "alphabet", "pronunciation": "/ziː ɪz fɔːr ˈziːbrə/" }
  },
  "texts": [
    {
      "title": "The Alphabet Song",
      "original_language": "A is for ax, B is for bear, C is for computer, D is for doll. E is for elbow, F is for fan, G is for gorilla, H is for house. I is for insect, J is for jacket, K is for kangaroo, L is for leaf. M is for monkey, N is for nest, O is for octopus, P is for panda. Q is for quilt, R is for rabbit, S is for sun, T is for turtle. U is for umbrella, V is for violin, W is for wolf, X is for fox. Y is for yogurt, Z is for zebra. Now I know my ABCs!",
      "user_language": "A代表斧头，B代表熊，C代表电脑，D代表玩偶。E代表手肘，F代表扇子，G代表大猩猩，H代表房子。I代表昆虫，J代表夹克，K代表袋鼠，L代表叶子。M代表猴子，N代表鸟巢，O代表章鱼，P代表熊猫。Q代表被子，R代表兔子，S代表太阳，T代表乌龟。U代表雨伞，V代表小提琴，W代表狼，X代表狐狸。Y代表酸奶，Z代表斑马。现在我知道我的ABC了！"
    }
  ],
  "grammar": {
    "alphabet-letters": {
      "title": "The English Alphabet",
      "explanation": "The English alphabet has 26 letters from A to Z. Each letter has a name and a sound.",
      "examples": [
        {
          "english": "A is for ax",
          "translation": "A代表斧头",
          "explanation": "Letter A makes the /æ/ sound in 'ax'"
        },
        {
          "english": "B is for bear",
          "translation": "B代表熊",
          "explanation": "Letter B makes the /b/ sound in 'bear'"
        },
        {
          "english": "Z is for zebra",
          "translation": "Z代表斑马",
          "explanation": "Letter Z makes the /z/ sound in 'zebra'"
        }
      ]
    }
  },
  "fillInBlanks": [
    {
      "sentence": "A is for ___",
      "options": ["ax", "bear", "computer", "doll"],
      "correctAnswer": "ax",
      "explanation": "A is for ax",
      "grammarFocus": "alphabet-letters"
    },
    {
      "sentence": "B is for ___",
      "options": ["bear", "ax", "computer", "doll"],
      "correctAnswer": "bear",
      "explanation": "B is for bear",
      "grammarFocus": "alphabet-letters"
    },
    {
      "sentence": "K is for ___",
      "options": ["kangaroo", "monkey", "nest", "octopus"],
      "correctAnswer": "kangaroo",
      "explanation": "K is for kangaroo",
      "grammarFocus": "alphabet-letters"
    },
    {
      "sentence": "P is for ___",
      "options": ["panda", "quilt", "rabbit", "sun"],
      "correctAnswer": "panda",
      "explanation": "P is for panda",
      "grammarFocus": "alphabet-letters"
    },
    {
      "sentence": "Z is for ___",
      "options": ["zebra", "yogurt", "wolf", "fox"],
      "correctAnswer": "zebra",
      "explanation": "Z is for zebra",
      "grammarFocus": "alphabet-letters"
    }
  ],
  "exercises": {
    "alphabet_matching": {
      "type": "matching",
      "instructions": "Match each letter with its word",
      "items": [
        { "letter": "A", "word": "ax", "user_language": "A - 斧头" },
        { "letter": "B", "word": "bear", "user_language": "B - 熊" },
        { "letter": "C", "word": "computer", "user_language": "C - 电脑" },
        { "letter": "D", "word": "doll", "user_language": "D - 玩偶" },
        { "letter": "E", "word": "elbow", "user_language": "E - 手肘" },
        { "letter": "F", "word": "fan", "user_language": "F - 扇子" },
        { "letter": "G", "word": "gorilla", "user_language": "G - 大猩猩" },
        { "letter": "H", "word": "house", "user_language": "H - 房子" },
        { "letter": "I", "word": "insect", "user_language": "I - 昆虫" },
        { "letter": "J", "word": "jacket", "user_language": "J - 夹克" },
        { "letter": "K", "word": "kangaroo", "user_language": "K - 袋鼠" },
        { "letter": "L", "word": "leaf", "user_language": "L - 叶子" },
        { "letter": "M", "word": "monkey", "user_language": "M - 猴子" },
        { "letter": "N", "word": "nest", "user_language": "N - 鸟巢" },
        { "letter": "O", "word": "octopus", "user_language": "O - 章鱼" },
        { "letter": "P", "word": "panda", "user_language": "P - 熊猫" },
        { "letter": "Q", "word": "quilt", "user_language": "Q - 被子" },
        { "letter": "R", "word": "rabbit", "user_language": "R - 兔子" },
        { "letter": "S", "word": "sun", "user_language": "S - 太阳" },
        { "letter": "T", "word": "turtle", "user_language": "T - 乌龟" },
        { "letter": "U", "word": "umbrella", "user_language": "U - 雨伞" },
        { "letter": "V", "word": "violin", "user_language": "V - 小提琴" },
        { "letter": "W", "word": "wolf", "user_language": "W - 狼" },
        { "letter": "X", "word": "fox", "user_language": "X - 狐狸" },
        { "letter": "Y", "word": "yogurt", "user_language": "Y - 酸奶" },
        { "letter": "Z", "word": "zebra", "user_language": "Z - 斑马" }
      ]
    },
    "letter_identification": {
      "type": "identification",
      "instructions": "What letter does each word start with?",
      "items": [
        { "word": "ax", "answer": "A", "user_language": "斧头 - A" },
        { "word": "bear", "answer": "B", "user_language": "熊 - B" },
        { "word": "kangaroo", "answer": "K", "user_language": "袋鼠 - K" },
        { "word": "panda", "answer": "P", "user_language": "熊猫 - P" },
        { "word": "zebra", "answer": "Z", "user_language": "斑马 - Z" }
      ]
    },
    "alphabet_sequence": {
      "type": "sequence",
      "instructions": "Say the alphabet in order from A to Z",
      "items": [
        { "sequence": "A, B, C, D, E, F, G", "user_language": "A, B, C, D, E, F, G" },
        { "sequence": "H, I, J, K, L, M, N", "user_language": "H, I, J, K, L, M, N" },
        { "sequence": "O, P, Q, R, S, T", "user_language": "O, P, Q, R, S, T" },
        { "sequence": "U, V, W, X, Y, Z", "user_language": "U, V, W, X, Y, Z" }
      ]
    }
  },
  "thematic_questions": {
    "letter_recognition": [
      {
        "id": "tq1",
        "question": "What letter does 'ax' start with?",
        "question_user_language": "'ax' 以什么字母开头？",
        "tts_enabled": true,
        "example_responses": [
          "It starts with A.",
          "A.",
          "The letter A."
        ],
        "theme": "letter_recognition"
      },
      {
        "id": "tq2",
        "question": "What letter does 'bear' start with?",
        "question_user_language": "'bear' 以什么字母开头？",
        "tts_enabled": true,
        "example_responses": [
          "It starts with B.",
          "B.",
          "The letter B."
        ],
        "theme": "letter_recognition"
      },
      {
        "id": "tq3",
        "question": "What letter does 'zebra' start with?",
        "question_user_language": "'zebra' 以什么字母开头？",
        "tts_enabled": true,
        "example_responses": [
          "It starts with Z.",
          "Z.",
          "The letter Z."
        ],
        "theme": "letter_recognition"
      }
    ],
    "word_for_letter": [
      {
        "id": "tq4",
        "question": "A is for...?",
        "question_user_language": "A 代表...？",
        "tts_enabled": true,
        "example_responses": [
          "A is for ax.",
          "Ax.",
          "A is for ax."
        ],
        "theme": "word_for_letter"
      },
      {
        "id": "tq5",
        "question": "K is for...?",
        "question_user_language": "K 代表...？",
        "tts_enabled": true,
        "example_responses": [
          "K is for kangaroo.",
          "Kangaroo.",
          "K is for kangaroo."
        ],
        "theme": "word_for_letter"
      },
      {
        "id": "tq6",
        "question": "P is for...?",
        "question_user_language": "P 代表...？",
        "tts_enabled": true,
        "example_responses": [
          "P is for panda.",
          "Panda.",
          "P is for panda."
        ],
        "theme": "word_for_letter"
      }
    ]
  },
  "statistics": {
    "vocabulary_count": 26,
    "phrases_count": 26,
    "dialogs_count": 0,
    "texts_count": 1,
    "exercises_count": 3,
    "fillInBlanks_count": 5,
    "corrections_count": 0,
    "thematic_questions_count": 6,
    "estimated_completion_time": 2
  }
}