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English/kouyu_english/assets/courses/A0/a0-06.json
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shenleiandClaude Opus 5 6b42b7abc3 feat: 独立词库、三向认词与当日快闪复习
## 独立词库

理解词原先只能跟着课程单元走,学完 A0 十课词汇量只增加约 22 个实词,
不足以解决"记不住单词"。新增一份独立词库 assets/words/wordbank.json
(2748 词,A1–B1),挂进 receptiveWordRegistry 的合成单元 bank-A1/A2/B1,
完全复用理解词已有的状态机,不依赖课程进度,第一天就能用。

数据来源、许可与合成规则记在 tool/words/DATA-NOTE.md:CEFR-J 定等级、
公开词书提供音标、AI 重写全部释义并生成例句、OpenSubtitles 提供口语词频。
词书部分为 CC BY-NC-SA 4.0 且上游权利不明,仅供个人非商用;
若要分发或上架,须替换音标那一列。

## 背单词机制

- 间隔阶梯 1/3/7/15/30/60/120 天,连续答对上一级,答错回第一级。
  原先首次答对后要等 7 天才复习,正是"第二天就忘"的成因。
- 每日新词上限(10 分钟 8 个 / 20 分钟 15 个 / 30 分钟 20 个)。
  阶梯第一级是次日,今天引入的新词就是明天的工作量。
- 新词按口语频率发放,不再按字母序 —— A1 从 a.m./ability 变成 no/not/know/just。
- 三个方向按层级轮转:看词(英→中)→ 听词(音→中)→ 想词(中→英)。
  想词题仍是选择题,不要求产出,理解词定位不变,不进升级分母。
- 单词页独立成 tab,首页今日任务卡下方给一张认词入口卡。

## 用法对照

课程 JSON 增加 usage 字段(when/reply/swap/confuse):一个句型用在什么场合、
对方通常怎么答、还能怎么说、跟哪个学过的句型容易混。
知道 How are you? 的意思,不等于知道它不是用来问名字的。

## 复习流

- 当日快闪(recap)独立成队列,不占复习预算,也不计入积压。
- 只发放当日预算内的量,其余保持到期状态等下次,不悄悄丢弃或改期。
- 答错的项隔几题后回来,而不是立刻重问。

测试 296 通过,flutter analyze 干净。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-20 23:54:17 +09:00

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{
"id": "a0-06",
"level": "A0",
"status": "approved",
"title": "我来自哪里?",
"canDo": "说明来自哪里并反问",
"categories": [],
"coreItems": [
{
"id": "A0-P11",
"type": "phrase",
"en": "Where are you from?",
"match": [
[
"where are you from"
]
],
"review": {
"prompt": "问对方来自哪里。",
"dictation": {
"sentence": "Where are you from?",
"meaning": "你来自哪里?"
}
},
"usage": {
"when": "想知道对方是哪里人。",
"reply": "对方会回 I'm from China.",
"confuse": [
{
"id": "A0-P02",
"note": "What's your name? 问名字,Where are you from? 问地方;Where 开头的一定是在问地点。"
}
]
}
},
{
"id": "A0-P12",
"type": "phrase",
"en": "I'm from [place].",
"match": [
[
"i am",
"my name is"
],
[
"/\\bfrom [a-z]{2,}/"
]
],
"review": {
"prompt": "说出你来自哪里。",
"hint": "用 Im from … 说出一个地点。",
"dictation": {
"sentence": "Im from China.",
"meaning": "我来自中国。"
}
},
"usage": {
"when": "别人问 Where are you from? 的时候,说出你来自哪里。",
"reply": "对方常接一句 Nice to meet you.",
"confuse": [
{
"id": "A0-P01",
"note": "I'm Tom. 是名字,I'm from China. 是地方;from 后面跟的一定是地点。"
}
]
}
}
],
"segments": [
{
"id": "a0-06-a",
"title": "我来自哪里?",
"minutes": 12,
"itemIds": [
"A0-P11",
"A0-P12"
],
"grammarNote": "说地点用 Im from + 地点:Im from Hong Kong。",
"vocabulary": [
{
"id": "a0-06-from",
"word": "from",
"meaning": "来自",
"example": "Im from Hong Kong.",
"exampleMeaning": "我来自香港。",
"ipa": "/frəm/"
},
{
"id": "a0-06-place",
"word": "place",
"meaning": "地点",
"example": "Where are you from?",
"exampleMeaning": "你来自哪里?"
}
],
"sceneId": "a0-06-a",
"listening": {
"text": "Where are you from?",
"question": "对方在问什么?",
"options": [
"来自哪里",
"叫什么",
"喜欢什么"
]
},
"speaking": [
{
"text": "Im from Hong Kong.",
"tip": ""
}
],
"reading": {
"text": "Mia: Im from London. Where are you from?\nShen: Im from Hong Kong.",
"question": "Shen 来自哪里?",
"options": [
"Hong Kong",
"London",
"Beijing"
]
},
"writing": {
"prompt": "写一句你来自哪里。",
"example": "Im from Hong Kong.",
"accept": [
[
"i am",
"my name is"
],
[
"/\\bfrom [a-z]{2,}/"
]
],
"hint": "用 I’m from … 写成一个完整句子。"
},
"independent": {
"prompt": "不看句框,说来自哪里并反问对方。",
"help": "Im from … / Where are you from?",
"accept": [
[
"i'm from",
"i am from"
],
[
"where are you from",
"#question"
]
]
}
}
],
"scenes": [
{
"id": "a0-06-a",
"kind": "main",
"title": "我来自哪里?",
"goal": "说来自哪里并反问",
"turns": [
{
"ai": "Where are you from?",
"aiZh": "你来自哪里?",
"goal": "说出你来自哪里",
"model": "Im from Hong Kong.",
"accept": [
"i'm from",
"i am from",
"from + #word"
]
},
{
"ai": "Nice! Ask me: Where are you from?",
"aiZh": "很好!请问我:Where are you from(你来自哪里)?",
"goal": "反问对方来自哪里",
"model": "Where are you from?",
"accept": [
"where are you from",
"where're you from",
"where are you"
]
},
{
"ai": "Say where you are from one more time.",
"aiZh": "请再说一次你来自哪里。",
"goal": "再说一次你来自哪里",
"model": "Im from Hong Kong.",
"accept": [
"i'm from",
"i am from",
"from + #word"
]
},
{
"ai": "Say goodbye!",
"aiZh": "请说再见!",
"goal": "说再见",
"model": "Bye!",
"accept": [
"bye",
"goodbye",
"see you"
]
}
]
}
],
"tasks": [],
"materials": []
}