Class_generator/content/chapters/sbs-7-8.json

{
  "id": "sbs-7-8",
  "book_id": "sbs",
  "name": "Daily Life & Vocabulary",
  "description": "Side by Side Level 7-8 vocabulary with language-agnostic format",
  "difficulty": "intermediate",
  "language": "en-US",
  "chapter_number": "7-8",
  "metadata": {
    "version": "1.0",
    "created": "2025-09-23",
    "updated": "2025-09-23",
    "source": "Side by Side English Learning Series",
    "target_level": "intermediate",
    "estimated_hours": 25,
    "prerequisites": ["sbs-5-6"],
    "learning_objectives": [
      "Master intermediate vocabulary for daily situations",
      "Understand clothing and body parts terminology",
      "Learn emotional expressions and feelings",
      "Practice technology and social media vocabulary"
    ],
    "content_tags": ["vocabulary", "daily-life", "practical-english", "conversational"],
    "completion_criteria": {
      "vocabulary_mastery": 80,
      "quiz_score": 75,
      "games_completed": 5
    }
  },
  "vocabulary": {
    "central": { "user_language": "中心的；中央的", "type": "adjective", "pronunciation": "/ˈsentrəl/" },
    "avenue": { "user_language": "大街；林荫道", "type": "noun", "pronunciation": "/ˈævənjuː/" },
    "refrigerator": { "user_language": "冰箱", "type": "noun", "pronunciation": "/rɪˈfrɪdʒəreɪtər/" },
    "closet": { "user_language": "衣柜；壁橱", "type": "noun", "pronunciation": "/ˈklɒzɪt/" },
    "elevator": { "user_language": "电梯", "type": "noun", "pronunciation": "/ˈeləveɪtər/" },
    "building": { "user_language": "建筑物；大楼", "type": "noun", "pronunciation": "/ˈbɪldɪŋ/" },
    "air conditioner": { "user_language": "空调", "type": "noun", "pronunciation": "/ɛr kənˈdɪʃənər/" },
    "superintendent": { "user_language": "主管；负责人", "type": "noun", "pronunciation": "/ˌsuːpərɪnˈtendənt/" },
    "bus stop": { "user_language": "公交车站", "type": "noun", "pronunciation": "/bʌs stɒp/" },
    "jacuzzi": { "user_language": "按摩浴缸", "type": "noun", "pronunciation": "/dʒəˈkuːzi/" },
    "machine": { "user_language": "机器；设备", "type": "noun", "pronunciation": "/məˈʃiːn/" },
    "two and a half": { "user_language": "两个半", "type": "number", "pronunciation": "/tuː ænd ə hæf/" },
    "in the center of": { "user_language": "在……中心", "type": "preposition", "pronunciation": "/ɪn ðə ˈsentər ʌv/" },
    "town": { "user_language": "城镇", "type": "noun", "pronunciation": "/taʊn/" },
    "a lot of": { "user_language": "许多", "type": "determiner", "pronunciation": "/ə lɑt ʌv/" },
    "noise": { "user_language": "噪音", "type": "noun", "pronunciation": "/nɔɪz/" },
    "sidewalks": { "user_language": "人行道", "type": "noun", "pronunciation": "/ˈsaɪdwɔːks/" },
    "all day and all night": { "user_language": "整日整夜", "type": "adverb", "pronunciation": "/ɔːl deɪ ænd ɔːl naɪt/" },
    "convenient": { "user_language": "便利的", "type": "adjective", "pronunciation": "/kənˈviːniənt/" },
    "shirt": { "user_language": "衬衫", "type": "noun", "pronunciation": "/ʃɜːrt/" },
    "coat": { "user_language": "外套、大衣", "type": "noun", "pronunciation": "/koʊt/" },
    "pants": { "user_language": "裤子", "type": "noun", "pronunciation": "/pænts/" },
    "shoes": { "user_language": "鞋子", "type": "noun", "pronunciation": "/ʃuːz/" },
    "hat": { "user_language": "帽子", "type": "noun", "pronunciation": "/hæt/" },
    "dress": { "user_language": "连衣裙", "type": "noun", "pronunciation": "/drɛs/" },
    "suit": { "user_language": "套装", "type": "noun", "pronunciation": "/suːt/" },
    "tie": { "user_language": "领带", "type": "noun", "pronunciation": "/taɪ/" },
    "socks": { "user_language": "袜子", "type": "noun", "pronunciation": "/sɑːks/" },
    "blouse": { "user_language": "女式衬衫", "type": "noun", "pronunciation": "/blaʊs/" },
    "skirt": { "user_language": "裙子", "type": "noun", "pronunciation": "/skɜːrt/" },
    "sweater": { "user_language": "毛衣", "type": "noun", "pronunciation": "/ˈswɛtər/" },
    "jacket": { "user_language": "夹克", "type": "noun", "pronunciation": "/ˈdʒækɪt/" },
    "jeans": { "user_language": "牛仔裤", "type": "noun", "pronunciation": "/dʒiːnz/" },
    "shorts": { "user_language": "短裤", "type": "noun", "pronunciation": "/ʃɔːrts/" },
    "sneakers": { "user_language": "运动鞋", "type": "noun", "pronunciation": "/ˈsniːkərz/" },
    "boots": { "user_language": "靴子", "type": "noun", "pronunciation": "/buːts/" },
    "gloves": { "user_language": "手套", "type": "noun", "pronunciation": "/ɡlʌvz/" },
    "scarf": { "user_language": "围巾", "type": "noun", "pronunciation": "/skɑːrf/" },
    "belt": { "user_language": "腰带", "type": "noun", "pronunciation": "/bɛlt/" },
    "head": { "user_language": "头", "type": "noun", "pronunciation": "/hɛd/" },
    "hair": { "user_language": "头发", "type": "noun", "pronunciation": "/hɛr/" },
    "eyes": { "user_language": "眼睛", "type": "noun", "pronunciation": "/aɪz/" },
    "nose": { "user_language": "鼻子", "type": "noun", "pronunciation": "/noʊz/" },
    "mouth": { "user_language": "嘴", "type": "noun", "pronunciation": "/maʊθ/" },
    "ears": { "user_language": "耳朵", "type": "noun", "pronunciation": "/ɪrz/" },
    "face": { "user_language": "脸", "type": "noun", "pronunciation": "/feɪs/" },
    "neck": { "user_language": "脖子", "type": "noun", "pronunciation": "/nɛk/" },
    "shoulders": { "user_language": "肩膀", "type": "noun", "pronunciation": "/ˈʃoʊldərz/" },
    "arms": { "user_language": "胳膊", "type": "noun", "pronunciation": "/ɑːrmz/" },
    "hands": { "user_language": "手", "type": "noun", "pronunciation": "/hændz/" },
    "fingers": { "user_language": "手指", "type": "noun", "pronunciation": "/ˈfɪŋɡərz/" },
    "chest": { "user_language": "胸部", "type": "noun", "pronunciation": "/tʃɛst/" },
    "back": { "user_language": "背部", "type": "noun", "pronunciation": "/bæk/" },
    "stomach": { "user_language": "腹部、肚子", "type": "noun", "pronunciation": "/ˈstʌmək/" },
    "legs": { "user_language": "腿", "type": "noun", "pronunciation": "/lɛɡz/" },
    "feet": { "user_language": "脚", "type": "noun", "pronunciation": "/fiːt/" },
    "happy": { "user_language": "快乐的", "type": "adjective", "pronunciation": "/ˈhæpi/" },
    "sad": { "user_language": "悲伤的", "type": "adjective", "pronunciation": "/sæd/" },
    "angry": { "user_language": "生气的", "type": "adjective", "pronunciation": "/ˈæŋɡri/" },
    "worried": { "user_language": "担心的", "type": "adjective", "pronunciation": "/ˈwɜːrid/" },
    "excited": { "user_language": "兴奋的", "type": "adjective", "pronunciation": "/ɪkˈsaɪtɪd/" },
    "tired": { "user_language": "疲劳的", "type": "adjective", "pronunciation": "/ˈtaɪərd/" },
    "hungry": { "user_language": "饥饿的", "type": "adjective", "pronunciation": "/ˈhʌŋɡri/" },
    "thirsty": { "user_language": "口渴的", "type": "adjective", "pronunciation": "/ˈθɜːrsti/" },
    "cold": { "user_language": "寒冷的", "type": "adjective", "pronunciation": "/koʊld/" },
    "hot": { "user_language": "炎热的", "type": "adjective", "pronunciation": "/hɑːt/" },
    "computer": { "user_language": "电脑", "type": "noun", "pronunciation": "/kəmˈpjuːtər/" },
    "laptop": { "user_language": "笔记本电脑", "type": "noun", "pronunciation": "/ˈlæptɑːp/" },
    "phone": { "user_language": "电话", "type": "noun", "pronunciation": "/foʊn/" },
    "tablet": { "user_language": "平板电脑", "type": "noun", "pronunciation": "/ˈtæblət/" },
    "internet": { "user_language": "互联网", "type": "noun", "pronunciation": "/ˈɪntərnet/" },
    "email": { "user_language": "电子邮件", "type": "noun", "pronunciation": "/ˈiːmeɪl/" },
    "website": { "user_language": "网站", "type": "noun", "pronunciation": "/ˈwɛbsaɪt/" },
    "app": { "user_language": "应用程序", "type": "noun", "pronunciation": "/æp/" },
    "social media": { "user_language": "社交媒体", "type": "noun", "pronunciation": "/ˈsoʊʃəl ˈmidiə/" },
    "password": { "user_language": "密码", "type": "noun", "pronunciation": "/ˈpæswərd/" }
  },
  "phrases": {
    "I live in a two-bedroom apartment": { "user_language": "我住在一间两居室的公寓", "context": "housing", "pronunciation": "/aɪ lɪv ɪn ə tuː ˈbɛdruːm əˈpɑːrtmənt/" },
    "It's in the center of town": { "user_language": "它在城镇中心", "context": "location", "pronunciation": "/ɪts ɪn ðə ˈsentər ʌv taʊn/" },
    "There's a lot of noise": { "user_language": "有很多噪音", "context": "complaint", "pronunciation": "/ðɛrz ə lɑt ʌv nɔɪz/" },
    "It's very convenient": { "user_language": "这很便利", "context": "advantage", "pronunciation": "/ɪts ˈvɛri kənˈviniənt/" },
    "What are you wearing?": { "user_language": "你穿的是什么？", "context": "clothing", "pronunciation": "/wʌt ɑr ju ˈwɛrɪŋ/" },
    "I'm wearing a blue shirt": { "user_language": "我穿着一件蓝色的衬衫", "context": "clothing", "pronunciation": "/aɪm ˈwɛrɪŋ ə blu ʃɜrt/" },
    "How do you feel?": { "user_language": "你感觉怎么样？", "context": "emotions", "pronunciation": "/haʊ du ju fil/" },
    "I feel happy today": { "user_language": "我今天感觉很开心", "context": "emotions", "pronunciation": "/aɪ fil ˈhæpi təˈdeɪ/" },
    "Do you have internet access?": { "user_language": "你有网络连接吗？", "context": "technology", "pronunciation": "/du ju hæv ˈɪntərnet ˈækses/" },
    "I need to check my email": { "user_language": "我需要查看我的电子邮件", "context": "technology", "pronunciation": "/aɪ nid tu tʃɛk maɪ ˈimeɪl/" }
  },
  "dialogs": {
    "apartment_search": {
      "title": "Looking for an Apartment",
      "participants": ["Alex", "Manager"],
      "lines": [
        { "speaker": "Alex", "text": "I'm looking for a two-bedroom apartment.", "user_language": "我在找一间两居室的公寓。" },
        { "speaker": "Manager", "text": "We have one available on Central Avenue.", "user_language": "我们在中央大道有一间可用的。" },
        { "speaker": "Alex", "text": "Is it convenient for transportation?", "user_language": "交通方便吗？" },
        { "speaker": "Manager", "text": "Yes, there's a bus stop right outside.", "user_language": "是的，外面就有一个公交车站。" }
      ]
    },
    "clothing_shopping": {
      "title": "Shopping for Clothes",
      "participants": ["Customer", "Salesperson"],
      "lines": [
        { "speaker": "Customer", "text": "I need a shirt for work.", "user_language": "我需要一件工作穿的衬衫。" },
        { "speaker": "Salesperson", "text": "What size do you wear?", "user_language": "你穿什么尺码？" },
        { "speaker": "Customer", "text": "Medium. Do you have it in blue?", "user_language": "中码。你们有蓝色的吗？" },
        { "speaker": "Salesperson", "text": "Yes, here's a nice blue shirt.", "user_language": "有，这里有一件漂亮的蓝色衬衫。" }
      ]
    }
  },
  "texts": [
    {
      "title": "My New Apartment",
      "original_language": "I live in a two-bedroom apartment on Central Avenue. It's in the center of town, so it's very convenient. There's a bus stop right outside the building. My apartment has a nice refrigerator, a big closet, and an air conditioner. The building has an elevator and a jacuzzi. The superintendent is very helpful. There's a lot of noise on the sidewalks all day and all night, but I like living here because everything is convenient.",
      "user_language": "我住在中央大道的一间两居室公寓。它在市中心，所以非常便利。大楼外面就有一个公交车站。我的公寓有一个漂亮的冰箱、一个大衣柜和一台空调。大楼有电梯和按摩浴缸。物业主管非常乐于助人。人行道上整日整夜都有很多噪音，但我喜欢住在这里，因为一切都很方便。"
    },
    {
      "title": "Getting Dressed for Work",
      "original_language": "Every morning, I get dressed for work. Today I'm wearing a blue shirt, black pants, and brown shoes. I also have a jacket because it's cold outside. I need to wear a suit for my job interview tomorrow, so I'm wearing a nice tie too. My shoes are very comfortable. I always wear socks and a belt. In winter, I wear gloves and a scarf. In summer, I wear shorts and sneakers on the weekend.",
      "user_language": "每天早上，我都要穿好衣服去上班。今天我穿着一件蓝色衬衫、黑色裤子和棕色鞋子。因为外面很冷，我还穿了一件夹克。明天我要参加工作面试，需要穿套装，所以我也戴了一条漂亮的领带。我的鞋子非常舒适。我总是穿袜子和系腰带。冬天，我戴手套和围巾。夏天，周末我穿短裤和运动鞋。"
    },
    {
      "title": "How I Feel Today",
      "original_language": "I feel happy today because it's Friday. Yesterday I felt tired because I worked all day and all night. Sometimes I feel worried about my job, but today I feel excited. My friend feels sad because she has a test tomorrow. Are you hungry? I'm very hungry because I haven't eaten all day. It's hot outside, so I feel thirsty. My feet hurt from walking, and my fingers hurt from typing on the computer.",
      "user_language": "我今天感到很快乐，因为今天是星期五。昨天我感到很累，因为我整日整夜都在工作。有时我会担心我的工作，但今天我感到很兴奋。我的朋友感到难过，因为她明天有考试。你饿吗？我非常饿，因为我一整天都没吃东西。外面很热，所以我感到口渴。我的脚因为走路而疼，我的手指因为在电脑上打字而疼。"
    },
    {
      "title": "My Daily Technology Use",
      "original_language": "I use my computer and laptop every day for work. I need to check my email in the morning. I have internet access at home and at the office. I use my phone and tablet to browse websites and use apps. I spend a lot of time on social media. I need a password for my email and all my apps. Do you have internet access? I need to check my email right now. Technology is very convenient, but sometimes my eyes hurt from looking at the computer screen all day.",
      "user_language": "我每天都使用电脑和笔记本电脑工作。早上我需要查看我的电子邮件。我在家里和办公室都有网络连接。我使用手机和平板电脑浏览网站和使用应用程序。我花很多时间在社交媒体上。我的电子邮件和所有应用程序都需要密码。你有网络连接吗？我现在需要查看我的电子邮件。科技非常方便，但有时我的眼睛因为整天看电脑屏幕而疼。"
    },
    {
      "title": "Describing People",
      "original_language": "My friend has long hair and beautiful eyes. She has a nice face and a friendly smile. She's tall with long arms and legs. My boss is wearing a suit today with a red tie. He has short hair and wears glasses. My sister is wearing a dress and boots. She has a scarf around her neck because it's cold. The superintendent of my building is wearing jeans and a sweater. He has strong shoulders and big hands.",
      "user_language": "我的朋友有长头发和美丽的眼睛。她有一张漂亮的脸和友好的笑容。她个子高，胳膊和腿都很长。我的老板今天穿着套装，打着红色领带。他有短发，戴着眼镜。我的妹妹穿着连衣裙和靴子。她脖子上围着围巾，因为天气很冷。我们楼的物业主管穿着牛仔裤和毛衣。他有强壮的肩膀和大手。"
    }
  ],
  "exercises": {
    "vocabulary_matching": {
      "type": "matching",
      "instructions": "Match the English words with their Chinese meanings",
      "pairs": [
        { "english": "shirt", "chinese": "衬衫" },
        { "english": "happy", "chinese": "快乐的" },
        { "english": "computer", "chinese": "电脑" },
        { "english": "apartment", "chinese": "公寓" }
      ]
    },
    "fill_in_blanks": {
      "type": "fill_blanks",
      "instructions": "Fill in the blanks with the correct words",
      "sentences": [
        { "text": "I live in a two-bedroom _______", "answer": "apartment", "user_language": "我住在一间两居室的_______" },
        { "text": "I'm wearing a blue _______", "answer": "shirt", "user_language": "我穿着一件蓝色的_______" }
      ]
    }
  },
  "grammar": {
    "articles": {
      "title": "Articles (a, an, the)",
      "explanation": "Articles are used before nouns. 'A' and 'an' are indefinite articles (any one), 'the' is the definite article (a specific one).",
      "examples": [
        {
          "chinese": "I'm wearing a blue shirt",
          "translation": "我穿着一件蓝色的衬衫",
          "explanation": "We use 'a' before singular countable nouns"
        },
        {
          "chinese": "I live in the center of town",
          "translation": "我住在城镇中心",
          "explanation": "We use 'the' when talking about a specific location"
        }
      ]
    },
    "present-continuous": {
      "title": "Present Continuous Tense (am/is/are + -ing)",
      "explanation": "Used to describe actions happening right now or temporary situations. Form: subject + am/is/are + verb-ing",
      "examples": [
        {
          "chinese": "She is wearing a dress",
          "translation": "她正穿着一件连衣裙",
          "explanation": "Present continuous shows what someone is wearing now"
        },
        {
          "chinese": "What are you wearing?",
          "translation": "你穿的是什么？",
          "explanation": "Question form: Question word + am/is/are + subject + verb-ing"
        }
      ]
    },
    "adjectives-emotions": {
      "title": "Adjectives for Feelings and Emotions",
      "explanation": "Adjectives describe how someone feels. After 'feel' or 'be', we use adjectives (not adverbs).",
      "examples": [
        {
          "chinese": "I feel happy today",
          "translation": "我今天感觉很开心",
          "explanation": "After 'feel', use adjective 'happy' not adverb 'happily'"
        },
        {
          "chinese": "Are you hungry?",
          "translation": "你饿吗？",
          "explanation": "We use 'are' with adjectives like hungry, tired, cold"
        }
      ]
    },
    "there-is-are": {
      "title": "There is / There are",
      "explanation": "Use 'there is' for singular or uncountable nouns, 'there are' for plural countable nouns.",
      "examples": [
        {
          "chinese": "There is a lot of noise",
          "translation": "有很多噪音",
          "explanation": "'Noise' is uncountable, so we use 'is' not 'are'"
        },
        {
          "chinese": "There's a bus stop right outside",
          "translation": "外面就有一个公交车站",
          "explanation": "Use 'there's' (there is) for a single bus stop"
        }
      ]
    }
  },
  "fillInBlanks": [
    {
      "sentence": "I live in a two-bedroom ___",
      "options": ["apartment", "building", "elevator", "closet"],
      "correctAnswer": "apartment",
      "explanation": "We use 'apartment' to describe a living space with bedrooms",
      "grammarFocus": "housing-vocabulary"
    },
    {
      "sentence": "The apartment is in the ___ of town",
      "options": ["center", "noise", "sidewalk", "building"],
      "correctAnswer": "center",
      "explanation": "'Center' means the middle or main part of town",
      "grammarFocus": "location"
    },
    {
      "sentence": "I'm wearing a blue ___",
      "options": ["shirt", "pants", "shoes", "hat"],
      "correctAnswer": "shirt",
      "explanation": "A shirt is a piece of clothing for the upper body",
      "grammarFocus": "clothing-vocabulary"
    },
    {
      "sentence": "She is wearing a beautiful ___",
      "options": ["dress", "tie", "belt", "gloves"],
      "correctAnswer": "dress",
      "explanation": "A dress is a one-piece garment typically worn by women",
      "grammarFocus": "clothing-vocabulary"
    },
    {
      "sentence": "My ___ hurts from typing all day",
      "options": ["fingers", "eyes", "ears", "nose"],
      "correctAnswer": "fingers",
      "explanation": "Fingers are used for typing on a keyboard",
      "grammarFocus": "body-parts"
    },
    {
      "sentence": "I feel very ___ today",
      "options": ["happy", "shirt", "computer", "building"],
      "correctAnswer": "happy",
      "explanation": "Happy is an emotion/feeling adjective",
      "grammarFocus": "emotions"
    },
    {
      "sentence": "Are you ___? You haven't eaten all day",
      "options": ["hungry", "tired", "cold", "hot"],
      "correctAnswer": "hungry",
      "explanation": "Hungry describes the feeling of needing food",
      "grammarFocus": "emotions"
    },
    {
      "sentence": "I need to check my ___",
      "options": ["email", "password", "website", "laptop"],
      "correctAnswer": "email",
      "explanation": "We 'check email' to read messages",
      "grammarFocus": "technology"
    },
    {
      "sentence": "Do you have ___ access?",
      "options": ["internet", "computer", "phone", "tablet"],
      "correctAnswer": "internet",
      "explanation": "We say 'internet access' to mean connection to the web",
      "grammarFocus": "technology"
    },
    {
      "sentence": "There's a lot of ___ in the city",
      "options": ["noise", "building", "elevator", "machine"],
      "correctAnswer": "noise",
      "explanation": "Noise refers to unwanted or loud sounds",
      "grammarFocus": "housing-vocabulary"
    },
    {
      "sentence": "The bus ___ is right outside",
      "options": ["stop", "building", "town", "sidewalk"],
      "correctAnswer": "stop",
      "explanation": "'Bus stop' is the place where buses pick up passengers",
      "grammarFocus": "location"
    },
    {
      "sentence": "I'm wearing ___ because it's cold",
      "options": ["gloves", "shorts", "sandals", "sunglasses"],
      "correctAnswer": "gloves",
      "explanation": "Gloves keep your hands warm in cold weather",
      "grammarFocus": "clothing-vocabulary"
    },
    {
      "sentence": "She looks ___ about the test",
      "options": ["worried", "exciting", "convenience", "building"],
      "correctAnswer": "worried",
      "explanation": "Worried describes feeling anxious or concerned",
      "grammarFocus": "emotions"
    },
    {
      "sentence": "I need a new ___ for my job interview",
      "options": ["suit", "jeans", "shorts", "sneakers"],
      "correctAnswer": "suit",
      "explanation": "A suit is formal clothing appropriate for interviews",
      "grammarFocus": "clothing-vocabulary"
    },
    {
      "sentence": "My ___ are tired from walking all day",
      "options": ["feet", "hands", "eyes", "ears"],
      "correctAnswer": "feet",
      "explanation": "Feet are used for walking",
      "grammarFocus": "body-parts"
    }
  ],
  "corrections": [
    {
      "correct": "I'm wearing a blue shirt",
      "incorrect": "I'm wearing blue shirt",
      "explanation": "We need the article 'a' before singular countable nouns",
      "grammarFocus": "articles"
    },
    {
      "correct": "There is a lot of noise",
      "incorrect": "There are a lot of noise",
      "grammarFocus": "subject-verb-agreement",
      "explanation": "'Noise' is uncountable, so we use 'is' not 'are'"
    },
    {
      "correct": "I feel happy today",
      "incorrect": "I feel happily today",
      "explanation": "After 'feel', we use an adjective (happy) not an adverb (happily)",
      "grammarFocus": "adjectives-adverbs"
    },
    {
      "correct": "She is wearing a dress",
      "incorrect": "She wearing a dress",
      "explanation": "We need the verb 'is' in present continuous tense",
      "grammarFocus": "present-continuous"
    },
    {
      "correct": "I need to check my email",
      "incorrect": "I need check my email",
      "explanation": "After 'need', we use 'to' + infinitive verb",
      "grammarFocus": "infinitives"
    },
    {
      "correct": "Do you have internet access?",
      "incorrect": "Are you have internet access?",
      "explanation": "We use 'do' not 'are' for questions with the verb 'have'",
      "grammarFocus": "questions"
    },
    {
      "correct": "My fingers hurt",
      "incorrect": "My fingers hurts",
      "explanation": "Plural subjects take plural verbs (hurt, not hurts)",
      "grammarFocus": "subject-verb-agreement"
    },
    {
      "correct": "The apartment is convenient",
      "incorrect": "The apartment is convenience",
      "explanation": "We need the adjective 'convenient', not the noun 'convenience'",
      "grammarFocus": "adjectives-nouns"
    },
    {
      "correct": "I live in the center of town",
      "incorrect": "I live in center of town",
      "explanation": "We need 'the' before 'center' when talking about a specific location",
      "grammarFocus": "articles"
    },
    {
      "correct": "Are you hungry?",
      "incorrect": "Do you hungry?",
      "explanation": "We use 'are' with adjectives, not 'do'",
      "grammarFocus": "questions"
    }
  ],
  "statistics": {
    "vocabulary_count": 67,
    "phrases_count": 10,
    "dialogs_count": 2,
    "texts_count": 5,
    "exercises_count": 2,
    "fillInBlanks_count": 15,
    "corrections_count": 10,
    "estimated_completion_time": 25
  }
}