{
  "SHEP-5-上-Unit2": [
    {
      "id": "td-unit2-1",
      "titleZh": "我的上学方式",
      "titleEn": "How I get to school",
      "subtitle": "和 AI 聊聊你每天怎么上学",
      "difficulty": 1,
      "rounds": 6,
      "durationMinutes": 4,
      "vocabulary": ["on foot", "by bus", "by bike", "by car", "by underground", "bus stop", "near", "far from"],
      "sentences": ["How do you come to school?", "I come to school by bus.", "Do you live near school?", "I live far from school.", "How long does it take?"],
      "note": "核心句型：How do you come to school? I come to school by/on..."
    },
    {
      "id": "td-unit2-2",
      "titleZh": "比较交通方式",
      "titleEn": "Comparing ways to travel",
      "subtitle": "讨论不同交通方式的优缺点",
      "difficulty": 2,
      "rounds": 8,
      "durationMinutes": 5,
      "vocabulary": ["fast", "slow", "cheap", "expensive", "safe", "convenient", "crowded", "on foot", "by bus", "by underground"],
      "sentences": ["Which is faster, bus or underground?", "I think... is more convenient.", "Going by bike is good for health."],
      "note": "对比 on foot, by bus, by bike, by underground 等方式"
    },
    {
      "id": "td-unit2-3",
      "titleZh": "家人的出行方式",
      "titleEn": "How my family gets around",
      "subtitle": "介绍家人上班上学的交通方式",
      "difficulty": 2,
      "rounds": 7,
      "durationMinutes": 5,
      "vocabulary": ["goes to work", "takes the bus", "drives", "walk to", "by underground", "far from", "near", "every day"],
      "sentences": ["My father/mother goes to work by...", "How does your father come to work?", "I go to school on foot.", "We live near the school."],
      "note": "句型：My father/mother goes to work by... I go to school..."
    },
    {
      "id": "td-unit2-4",
      "titleZh": "上学路上的见闻",
      "titleEn": "Things I see on my way to school",
      "subtitle": "分享上学路上看到的有趣事物",
      "difficulty": 3,
      "rounds": 8,
      "durationMinutes": 6,
      "vocabulary": ["bus stop", "traffic lights", "road", "cross", "walk", "along", "turn", "corner", "shop", "people"],
      "sentences": ["On my way to school, I can see...", "I walk along...", "I turn left/right at...", "It takes me ... minutes to get to school."],
      "note": "综合运用本单元词汇和句型，培养叙事能力"
    }
  ]
}
