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English/kouyu_english/assets/courses/A0/a0-02.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": "a0-02",
"level": "A0",
"status": "approved",
"title": "拼读我的名字",
"canDo": "听懂拼写,并说出名字字母",
"categories": [],
"coreItems": [
{
"id": "A0-P04",
"type": "phrase",
"en": "How do you spell that?",
"match": [
[
"how do you spell"
]
],
"review": {
"prompt": "问对方一个词怎样拼写。",
"hint": "问对方怎样拼写:How do you spell …?",
"dictation": {
"sentence": "How do you spell that?",
"meaning": "那个怎么拼写?"
}
},
"usage": {
"when": "听到一个词(多半是名字),但不确定怎么写。",
"reply": "对方会一个字母一个字母念给你听。",
"confuse": [
{
"id": "A0-P02",
"note": "What's your name? 是问对方叫什么,How do you spell that? 是已经听到了名字、只是不知道怎么写。"
},
{
"id": "A0-P20",
"note": "Please say that again. 是没听清、要对方重说;这句是听清了、只是不会写。"
}
]
}
}
],
"segments": [
{
"id": "a0-02-a",
"title": "拼读我的名字",
"minutes": 12,
"itemIds": [
"A0-P04"
],
"grammarNote": "My name is 后面接名字;拼读时每个字母之间稍微停顿。",
"vocabulary": [
{
"id": "a0-02-spell",
"word": "spell",
"meaning": "拼写",
"example": "How do you spell that?",
"exampleMeaning": "那个怎么拼?",
"ipa": "/spel/"
},
{
"id": "a0-02-name",
"word": "name",
"meaning": "名字",
"example": "My name is Shen.",
"exampleMeaning": "我的名字是 Shen。",
"ipa": "/neɪm/"
},
{
"id": "a0-02-question",
"word": "How do you spell that?",
"meaning": "那个怎么拼?",
"example": "How do you spell your name?",
"exampleMeaning": "你的名字怎么拼?"
}
],
"sceneId": "a0-02-a",
"listening": {
"text": "How do you spell your name?",
"question": "这句话是什么意思?",
"options": [
"你的名字怎么拼?",
"你的名字是什么?",
"你来自哪里?"
]
},
"speaking": [
{
"text": "S H E N",
"tip": "字母之间留一个短停顿:S /es/ - H /eɪtʃ/ - E /iː/ - N /en/。先清楚,不必快。"
}
],
"reading": {
"text": "Mia: I’m Mia. M-I-A.\nShen: Hi, Mia. I’m Shen. S-H-E-N.\nMia: How do you spell Sam?\nShen: S-A-M.",
"question": "Shen 自己的名字怎么拼写?",
"options": [
"S-H-E-N",
"M-I-A",
"S-A-M"
]
},
"writing": {
"prompt": "把名字和拼写写完整。",
"example": "My name is Shen.\nS-H-E-N.",
"accept": [
[
"my name",
"i am"
]
],
"hint": "写出姓名并拼写一遍,例如 My name is Shen. S-H-E-N."
},
"independent": {
"prompt": "不看句框,用英文介绍名字并拼读它。",
"help": "My name is … / A-B-C.",
"accept": [
[
"i'm + #word",
"i am + #word",
"my name is",
"my name's"
],
[
"#spelling"
]
]
}
}
],
"scenes": [
{
"id": "a0-02-a",
"kind": "main",
"title": "拼读我的名字",
"goal": "介绍姓名并完整拼读名字",
"turns": [
{
"ai": "Hi! What’s your name?",
"aiZh": "嗨!你叫什么名字?",
"goal": "说出你的名字",
"model": "My name is Alex.",
"accept": [
"i'm + #word",
"i am + #word",
"my name is",
"my name's",
"name is"
]
},
{
"ai": "How do you spell that?",
"aiZh": "那个怎么拼写?",
"goal": "拼读你的名字",
"model": "A-L-E-X.",
"accept": [
"#spelling"
]
},
{
"ai": "Thank you. Spell it one more time.",
"aiZh": "谢谢。请再拼写一次。",
"goal": "再拼读一次",
"model": "A-L-E-X.",
"accept": [
"#spelling"
]
},
{
"ai": "Now ask me my name!",
"aiZh": "现在请问我的名字!",
"goal": "反问对方的名字",
"model": "What’s your name?",
"accept": [
"what's your name",
"what is your name",
"your name",
"#question"
]
}
]
}
],
"tasks": [],
"materials": []
}