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139
client/lib/features/speaking/data/ai_tutor_data.dart Normal file
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import '../models/ai_tutor.dart';
/// AI导师静态数据
class AITutorData {
static final List<AITutor> _tutors = [
AITutor(
id: 'tutor_business_001',
type: TutorType.business,
name: 'Emma Wilson',
avatar: '👩‍💼',
introduction: '我是Emma，拥有10年国际商务经验的专业导师。我将帮助你掌握商务英语，提升职场沟通能力。',
specialties: [
'商务会议主持',
'产品演示与推介',
'商务谈判技巧',
'邮件沟通礼仪',
'客户关系维护',
'团队协作沟通',
],
sampleQuestions: [
'Could you tell me about your company\'s main products?',
'What\'s your strategy for the next quarter?',
'How do you handle difficult clients?',
'Can you walk me through your proposal?',
'What are the key benefits of this solution?',
],
personality: '专业、严谨、富有耐心，善于引导学员进行深度商务对话',
createdAt: DateTime.now().subtract(const Duration(days: 30)),
updatedAt: DateTime.now().subtract(const Duration(days: 1)),
),
AITutor(
id: 'tutor_daily_001',
type: TutorType.daily,
name: 'Mike Johnson',
avatar: '👨‍🦱',
introduction: '嗨！我是Mike，一个热爱生活的英语导师。让我们一起在轻松愉快的氛围中提升你的日常英语交流能力！',
specialties: [
'日常生活对话',
'购物与消费',
'餐厅用餐',
'交通出行',
'社交聚会',
'兴趣爱好分享',
],
sampleQuestions: [
'What did you do over the weekend?',
'How was your day today?',
'What\'s your favorite type of food?',
'Do you have any hobbies?',
'What\'s the weather like today?',
],
personality: '友好、幽默、平易近人，善于创造轻松的对话氛围',
createdAt: DateTime.now().subtract(const Duration(days: 25)),
updatedAt: DateTime.now().subtract(const Duration(days: 1)),
),
AITutor(
id: 'tutor_travel_001',
type: TutorType.travel,
name: 'Sarah Chen',
avatar: '👩‍✈️',
introduction: '我是Sarah，环游过50多个国家的旅行达人。我会教你在世界各地都能自信交流的旅行英语！',
specialties: [
'机场办理手续',
'酒店预订入住',
'问路与导航',
'景点游览',
'紧急情况处理',
'文化交流',
],
sampleQuestions: [
'Where would you like to go for your next trip?',
'Have you ever been to any foreign countries?',
'What\'s your favorite travel destination?',
'How do you usually plan your trips?',
'What would you do if you got lost in a foreign city?',
],
personality: '热情、冒险、见多识广，能分享丰富的旅行经验',
createdAt: DateTime.now().subtract(const Duration(days: 20)),
updatedAt: DateTime.now().subtract(const Duration(days: 1)),
),
AITutor(
id: 'tutor_academic_001',
type: TutorType.academic,
name: 'Dr. Robert Smith',
avatar: '👨‍🎓',
introduction: '我是Robert博士，在学术界工作了15年。我将帮助你掌握学术英语，提升演讲和论文写作能力。',
specialties: [
'学术演讲技巧',
'论文讨论',
'研究方法论述',
'学术会议参与',
'同行评议',
'批判性思维表达',
],
sampleQuestions: [
'What\'s your research focus?',
'How would you approach this research problem?',
'What are the limitations of this study?',
'Can you explain your methodology?',
'What are the implications of these findings?',
],
personality: '博学、严谨、启发性强，善于引导深度学术思考',
createdAt: DateTime.now().subtract(const Duration(days: 15)),
updatedAt: DateTime.now().subtract(const Duration(days: 1)),
),
];
/// 获取所有AI导师
static List<AITutor> getAllTutors() {
return List.unmodifiable(_tutors);
}
/// 根据ID获取AI导师
static AITutor? getTutorById(String id) {
try {
return _tutors.firstWhere((tutor) => tutor.id == id);
} catch (e) {
return null;
}
}
/// 根据类型获取AI导师
static AITutor? getTutorByType(TutorType type) {
try {
return _tutors.firstWhere((tutor) => tutor.type == type);
} catch (e) {
return null;
}
}
/// 获取推荐的AI导师
static List<AITutor> getRecommendedTutors() {
// 返回所有导师，实际应用中可以根据用户偏好推荐
return getAllTutors();
}
}

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client/lib/features/speaking/data/pronunciation_data.dart Normal file
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import '../models/pronunciation_item.dart';
/// 发音练习静态数据
class PronunciationData {
static final List<PronunciationItem> _wordPronunciation = [
PronunciationItem(
id: 'word_001',
text: 'pronunciation',
phonetic: '/prəˌnʌnsiˈeɪʃn/',
audioUrl: 'assets/audio/pronunciation.mp3',
type: PronunciationType.word,
difficulty: DifficultyLevel.intermediate,
category: '学习词汇',
tips: [
'注意重音在第四个音节',
'末尾的-tion读作/ʃn/',
'中间的nun要清晰发音'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'word_002',
text: 'communication',
phonetic: '/kəˌmjuːnɪˈkeɪʃn/',
audioUrl: 'assets/audio/communication.mp3',
type: PronunciationType.word,
difficulty: DifficultyLevel.intermediate,
category: '商务词汇',
tips: [
'重音在第五个音节',
'注意/mju:/的发音',
'末尾-tion读作/ʃn/'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'word_003',
text: 'restaurant',
phonetic: '/ˈrestərɑːnt/',
audioUrl: 'assets/audio/restaurant.mp3',
type: PronunciationType.word,
difficulty: DifficultyLevel.beginner,
category: '日常词汇',
tips: [
'重音在第一个音节',
'注意/r/音的发音',
'末尾的t通常不发音'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'word_004',
text: 'schedule',
phonetic: '/ˈʃedjuːl/',
audioUrl: 'assets/audio/schedule.mp3',
type: PronunciationType.word,
difficulty: DifficultyLevel.intermediate,
category: '工作词汇',
tips: [
'英式发音以/ʃ/开头',
'美式发音以/sk/开头',
'重音在第一个音节'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'word_005',
text: 'comfortable',
phonetic: '/ˈkʌmftəbl/',
audioUrl: 'assets/audio/comfortable.mp3',
type: PronunciationType.word,
difficulty: DifficultyLevel.advanced,
category: '形容词',
tips: [
'注意弱读音节',
'中间的or通常省略',
'末尾的-able读作/əbl/'
],
createdAt: DateTime.now(),
),
];
static final List<PronunciationItem> _sentencePronunciation = [
PronunciationItem(
id: 'sentence_001',
text: 'How are you doing today?',
phonetic: '/haʊ ɑːr juː ˈduːɪŋ təˈdeɪ/',
audioUrl: 'assets/audio/how_are_you.mp3',
type: PronunciationType.sentence,
difficulty: DifficultyLevel.beginner,
category: '日常问候',
tips: [
'注意连读：How are → /haʊər/',
'语调上扬表示疑问',
'today重音在第二个音节'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'sentence_002',
text: 'Could you please help me with this?',
phonetic: '/kʊd juː pliːz help miː wɪð ðɪs/',
audioUrl: 'assets/audio/could_you_help.mp3',
type: PronunciationType.sentence,
difficulty: DifficultyLevel.intermediate,
category: '请求帮助',
tips: [
'礼貌的语调，温和下降',
'注意could的弱读',
'with this连读'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'sentence_003',
text: 'I would like to make a reservation.',
phonetic: '/aɪ wʊd laɪk tuː meɪk ə ˌrezərˈveɪʃn/',
audioUrl: 'assets/audio/reservation.mp3',
type: PronunciationType.sentence,
difficulty: DifficultyLevel.intermediate,
category: '预订服务',
tips: [
'正式语调，清晰发音',
'would like连读',
'reservation重音在第三个音节'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'sentence_004',
text: 'The weather is absolutely beautiful today.',
phonetic: '/ðə ˈweðər ɪz ˌæbsəˈluːtli ˈbjuːtɪfl təˈdeɪ/',
audioUrl: 'assets/audio/weather_beautiful.mp3',
type: PronunciationType.sentence,
difficulty: DifficultyLevel.advanced,
category: '天气描述',
tips: [
'注意节奏和重音分布',
'absolutely的重音模式',
'形容词的语调变化'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'sentence_005',
text: 'I am looking forward to hearing from you.',
phonetic: '/aɪ æm ˈlʊkɪŋ ˈfɔːrwərd tuː ˈhɪrɪŋ frəm juː/',
audioUrl: 'assets/audio/looking_forward.mp3',
type: PronunciationType.sentence,
difficulty: DifficultyLevel.advanced,
category: '商务表达',
tips: [
'正式商务语调',
'注意短语的完整性',
'forward to连读'
],
createdAt: DateTime.now(),
),
];
static final List<PronunciationItem> _phrasePronunciation = [
PronunciationItem(
id: 'phrase_001',
text: 'Nice to meet you',
phonetic: '/naɪs tuː miːt juː/',
audioUrl: 'assets/audio/nice_to_meet.mp3',
type: PronunciationType.phrase,
difficulty: DifficultyLevel.beginner,
category: '问候语',
tips: [
'连读：Nice to → /naɪstə/',
'友好的语调',
'重音在Nice和meet上'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'phrase_002',
text: 'Thank you very much',
phonetic: '/θæŋk juː ˈveri mʌtʃ/',
audioUrl: 'assets/audio/thank_you_much.mp3',
type: PronunciationType.phrase,
difficulty: DifficultyLevel.beginner,
category: '感谢语',
tips: [
'注意th音的发音',
'very much重音分布',
'真诚的语调'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'phrase_003',
text: 'Excuse me',
phonetic: '/ɪkˈskjuːz miː/',
audioUrl: 'assets/audio/excuse_me.mp3',
type: PronunciationType.phrase,
difficulty: DifficultyLevel.beginner,
category: '礼貌用语',
tips: [
'重音在excuse的第二个音节',
'礼貌的上升语调',
'清晰的/z/音'
],
createdAt: DateTime.now(),
),
];
static final List<PronunciationItem> _phonemePronunciation = [
PronunciationItem(
id: 'phoneme_001',
text: '/θ/ - think, three, thank',
phonetic: '/θ/',
audioUrl: 'assets/audio/th_sound.mp3',
type: PronunciationType.phoneme,
difficulty: DifficultyLevel.intermediate,
category: '辅音',
tips: [
'舌尖轻触上齿',
'气流从舌齿间通过',
'不要发成/s/或/f/'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'phoneme_002',
text: '/r/ - red, right, very',
phonetic: '/r/',
audioUrl: 'assets/audio/r_sound.mp3',
type: PronunciationType.phoneme,
difficulty: DifficultyLevel.advanced,
category: '辅音',
tips: [
'舌尖向上卷起',
'不要触碰口腔任何部位',
'声带振动'
],
createdAt: DateTime.now(),
),
PronunciationItem(
id: 'phoneme_003',
text: '/æ/ - cat, hat, bad',
phonetic: '/æ/',
audioUrl: 'assets/audio/ae_sound.mp3',
type: PronunciationType.phoneme,
difficulty: DifficultyLevel.intermediate,
category: '元音',
tips: [
'嘴巴张得比/e/大',
'舌位较低',
'短元音，发音清脆'
],
createdAt: DateTime.now(),
),
];
/// 获取所有发音练习项目
static List<PronunciationItem> getAllItems() {
return [
..._wordPronunciation,
..._sentencePronunciation,
..._phrasePronunciation,
..._phonemePronunciation,
];
}
/// 根据类型获取发音练习项目
static List<PronunciationItem> getItemsByType(PronunciationType type) {
switch (type) {
case PronunciationType.word:
return _wordPronunciation;
case PronunciationType.sentence:
return _sentencePronunciation;
case PronunciationType.phrase:
return _phrasePronunciation;
case PronunciationType.phoneme:
return _phonemePronunciation;
}
}
/// 根据难度获取发音练习项目
static List<PronunciationItem> getItemsByDifficulty(DifficultyLevel difficulty) {
return getAllItems().where((item) => item.difficulty == difficulty).toList();
}
/// 根据分类获取发音练习项目
static List<PronunciationItem> getItemsByCategory(String category) {
return getAllItems().where((item) => item.category == category).toList();
}
/// 根据ID获取发音练习项目
static PronunciationItem? getItemById(String id) {
try {
return getAllItems().firstWhere((item) => item.id == id);
} catch (e) {
return null;
}
}
/// 获取所有分类
static List<String> getAllCategories() {
return getAllItems().map((item) => item.category).toSet().toList();
}
}

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client/lib/features/speaking/data/scenario_data.dart Normal file
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import '../models/conversation_scenario.dart';
/// 对话场景静态数据
class ScenarioData {
static final List<ConversationScenario> _scenarios = [
ConversationScenario(
id: 'restaurant_ordering',
title: 'Ordering Food at Restaurant',
subtitle: '餐厅点餐对话',
description: '学习在餐厅点餐的常用英语表达，包括询问菜单、下订单、特殊要求等。',
duration: '10分钟',
level: 'B1',
type: ScenarioType.restaurant,
objectives: [
'学会阅读英文菜单',
'掌握点餐的基本表达',
'学会提出特殊要求',
'了解餐厅服务流程',
],
keyPhrases: [
'I\'d like to order...',
'What do you recommend?',
'Could I have the menu, please?',
'I\'m allergic to...',
'Could you make it less spicy?',
'Check, please.',
],
steps: [
ScenarioStep(
stepNumber: 1,
title: '入座问候',
description: '服务员引导您入座并提供菜单',
role: 'npc',
content: 'Good evening! Welcome to our restaurant. How many people are in your party?',
options: [
'Just one, please.',
'Table for two, please.',
'We have a reservation under Smith.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 2,
title: '查看菜单',
description: '服务员询问您是否需要时间看菜单',
role: 'npc',
content: 'Here\'s your table. Would you like to see the menu, or do you need a few minutes?',
options: [
'Could I have the menu, please?',
'I need a few minutes to decide.',
'What do you recommend?',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 3,
title: '点餐',
description: '服务员准备为您点餐',
role: 'npc',
content: 'Are you ready to order, or would you like to hear about our specials?',
options: [
'I\'d like to hear about the specials.',
'I\'m ready to order.',
'Could you give me a few more minutes?',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 4,
title: '下订单',
description: '告诉服务员您想要什么',
role: 'user',
content: 'What would you like to order?',
options: [
'I\'d like the grilled salmon, please.',
'Could I have the pasta with marinara sauce?',
'I\'ll have the chicken Caesar salad.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 5,
title: '特殊要求',
description: '提出任何特殊的饮食要求',
role: 'npc',
content: 'How would you like that cooked? Any special requests?',
options: [
'Medium rare, please.',
'Could you make it less spicy?',
'I\'m allergic to nuts, please make sure there are none.',
],
correctOption: null,
),
],
createdAt: DateTime.now(),
),
ConversationScenario(
id: 'job_interview',
title: 'Job Interview Practice',
subtitle: '工作面试练习',
description: '模拟真实的英语工作面试场景，练习自我介绍、回答常见问题和提问技巧。',
duration: '15分钟',
level: 'B2',
type: ScenarioType.interview,
objectives: [
'掌握自我介绍技巧',
'学会回答常见面试问题',
'练习询问公司信息',
'提高面试自信心',
],
keyPhrases: [
'Tell me about yourself.',
'What are your strengths?',
'Why do you want this job?',
'Where do you see yourself in 5 years?',
'Do you have any questions for us?',
'Thank you for your time.',
],
steps: [
ScenarioStep(
stepNumber: 1,
title: '面试开始',
description: '面试官欢迎您并开始面试',
role: 'npc',
content: 'Good morning! Please have a seat. Thank you for coming in today.',
options: [
'Good morning! Thank you for having me.',
'Hello! I\'m excited to be here.',
'Thank you for the opportunity.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 2,
title: '自我介绍',
description: '面试官要求您进行自我介绍',
role: 'npc',
content: 'Let\'s start with you telling me a little bit about yourself.',
options: [
'I have 5 years of experience in marketing...',
'I\'m a recent graduate with a degree in...',
'I\'m currently working as a... and looking for new challenges.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 3,
title: '优势询问',
description: '面试官询问您的优势',
role: 'npc',
content: 'What would you say are your greatest strengths?',
options: [
'I\'m very detail-oriented and organized.',
'I work well under pressure and meet deadlines.',
'I\'m a strong team player with good communication skills.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 4,
title: '职业规划',
description: '面试官询问您的职业规划',
role: 'npc',
content: 'Where do you see yourself in five years?',
options: [
'I see myself in a leadership role, managing a team.',
'I want to become an expert in my field.',
'I hope to have grown professionally and taken on more responsibilities.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 5,
title: '提问环节',
description: '面试官询问您是否有问题',
role: 'npc',
content: 'Do you have any questions about the company or the position?',
options: [
'What does a typical day look like in this role?',
'What are the opportunities for professional development?',
'What do you enjoy most about working here?',
],
correctOption: null,
),
],
createdAt: DateTime.now(),
),
ConversationScenario(
id: 'business_meeting',
title: 'Business Meeting Discussion',
subtitle: '商务会议讨论',
description: '参与英语商务会议，学习表达观点、提出建议和进行专业讨论。',
duration: '20分钟',
level: 'C1',
type: ScenarioType.business,
objectives: [
'学会在会议中表达观点',
'掌握商务讨论技巧',
'练习提出建议和反对意见',
'提高商务英语水平',
],
keyPhrases: [
'I\'d like to propose...',
'From my perspective...',
'I agree with your point, however...',
'Could we consider...',
'Let\'s move on to the next item.',
'To summarize...',
],
steps: [
ScenarioStep(
stepNumber: 1,
title: '会议开始',
description: '会议主持人开始会议并介绍议程',
role: 'npc',
content: 'Good morning, everyone. Let\'s begin today\'s meeting. Our main agenda is to discuss the new marketing strategy.',
options: [
'Good morning! I\'m looking forward to the discussion.',
'Thank you for organizing this meeting.',
'I have some ideas I\'d like to share.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 2,
title: '观点表达',
description: '主持人邀请您分享观点',
role: 'npc',
content: 'What are your thoughts on our current marketing approach?',
options: [
'I think we should focus more on digital marketing.',
'From my perspective, we need to target younger demographics.',
'I believe our current strategy is effective, but we could improve...',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 3,
title: '建议提出',
description: '有人提出了一个建议，您需要回应',
role: 'npc',
content: 'I propose we increase our social media budget by 30%. What do you think?',
options: [
'That\'s an interesting proposal. Could we see some data first?',
'I agree, but we should also consider the ROI.',
'I have some concerns about that approach.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 4,
title: '讨论深入',
description: '深入讨论具体实施方案',
role: 'npc',
content: 'How do you suggest we implement this new strategy?',
options: [
'We could start with a pilot program.',
'I recommend we form a dedicated team.',
'Let\'s set clear milestones and deadlines.',
],
correctOption: null,
),
ScenarioStep(
stepNumber: 5,
title: '会议总结',
description: '总结会议要点和下一步行动',
role: 'npc',
content: 'Let\'s summarize what we\'ve discussed and assign action items.',
options: [
'I can take responsibility for the market research.',
'Should we schedule a follow-up meeting?',
'I\'ll prepare a detailed proposal by next week.',
],
correctOption: null,
),
],
createdAt: DateTime.now(),
),
];
/// 获取所有场景
static List<ConversationScenario> getAllScenarios() {
return List.from(_scenarios);
}
/// 根据ID获取场景
static ConversationScenario? getScenarioById(String id) {
try {
return _scenarios.firstWhere((scenario) => scenario.id == id);
} catch (e) {
return null;
}
}
/// 根据类型获取场景
static List<ConversationScenario> getScenariosByType(ScenarioType type) {
return _scenarios.where((scenario) => scenario.type == type).toList();
}
/// 根据难度级别获取场景
static List<ConversationScenario> getScenariosByLevel(String level) {
return _scenarios.where((scenario) => scenario.level == level).toList();
}
}

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client/lib/features/speaking/data/speaking_static_data.dart Normal file
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import '../models/speaking_scenario.dart';
/// 口语练习静态数据
class SpeakingStaticData {
static final List<SpeakingTask> _tasks = [
// 日常对话场景
SpeakingTask(
id: 'daily_001',
title: '自我介绍',
description: '学习如何进行基本的自我介绍',
scenario: SpeakingScenario.dailyConversation,
difficulty: SpeakingDifficulty.beginner,
objectives: [
'能够清晰地介绍自己的姓名、年龄和职业',
'掌握基本的问候语和礼貌用语',
'学会询问他人的基本信息',
],
keyPhrases: [
'My name is...',
'I am from...',
'I work as...',
'Nice to meet you',
'How about you?',
],
backgroundInfo: '在日常生活中，自我介绍是最基本的社交技能。无论是在工作场合还是社交聚会，都需要用到这项技能。',
estimatedDuration: 10,
isRecommended: true,
createdAt: DateTime.now().subtract(const Duration(days: 30)),
updatedAt: DateTime.now().subtract(const Duration(days: 30)),
),
SpeakingTask(
id: 'daily_002',
title: '询问方向',
description: '学习如何询问和指示方向',
scenario: SpeakingScenario.dailyConversation,
difficulty: SpeakingDifficulty.elementary,
objectives: [
'能够礼貌地询问方向',
'理解和给出简单的方向指示',
'掌握常用的地点和方向词汇',
],
keyPhrases: [
'Excuse me, where is...?',
'How can I get to...?',
'Go straight',
'Turn left/right',
'It\'s on your left/right',
],
estimatedDuration: 15,
createdAt: DateTime.now().subtract(const Duration(days: 25)),
updatedAt: DateTime.now().subtract(const Duration(days: 25)),
),
// 商务会议场景
SpeakingTask(
id: 'business_001',
title: '会议开场',
description: '学习如何主持和参与会议开场',
scenario: SpeakingScenario.businessMeeting,
difficulty: SpeakingDifficulty.intermediate,
objectives: [
'能够正式地开始会议',
'介绍会议议程和参与者',
'掌握商务会议的基本礼仪',
],
keyPhrases: [
'Let\'s get started',
'Today\'s agenda includes...',
'I\'d like to introduce...',
'The purpose of this meeting is...',
'Any questions before we begin?',
],
backgroundInfo: '商务会议是职场中重要的沟通方式，掌握会议开场技巧能够提升专业形象。',
estimatedDuration: 20,
isRecommended: true,
createdAt: DateTime.now().subtract(const Duration(days: 20)),
updatedAt: DateTime.now().subtract(const Duration(days: 20)),
),
SpeakingTask(
id: 'business_002',
title: '产品介绍',
description: '学习如何向客户介绍产品',
scenario: SpeakingScenario.businessMeeting,
difficulty: SpeakingDifficulty.upperIntermediate,
objectives: [
'能够清晰地描述产品特点',
'强调产品的优势和价值',
'回答客户的疑问',
],
keyPhrases: [
'Our product features...',
'The main benefit is...',
'This will help you...',
'Compared to competitors...',
'Would you like to know more about...?',
],
estimatedDuration: 25,
createdAt: DateTime.now().subtract(const Duration(days: 18)),
updatedAt: DateTime.now().subtract(const Duration(days: 18)),
),
// 求职面试场景
SpeakingTask(
id: 'interview_001',
title: '面试自我介绍',
description: '学习面试中的专业自我介绍',
scenario: SpeakingScenario.jobInterview,
difficulty: SpeakingDifficulty.intermediate,
objectives: [
'能够简洁有力地介绍自己',
'突出相关工作经验和技能',
'展现对职位的兴趣和热情',
],
keyPhrases: [
'I have X years of experience in...',
'My background includes...',
'I\'m particularly skilled at...',
'I\'m excited about this opportunity because...',
'I believe I would be a good fit because...',
],
backgroundInfo: '面试自我介绍是求职过程中的关键环节，需要在短时间内给面试官留下深刻印象。',
estimatedDuration: 15,
isRecommended: true,
createdAt: DateTime.now().subtract(const Duration(days: 15)),
updatedAt: DateTime.now().subtract(const Duration(days: 15)),
),
// 购物场景
SpeakingTask(
id: 'shopping_001',
title: '服装购买',
description: '学习在服装店购物的对话',
scenario: SpeakingScenario.shopping,
difficulty: SpeakingDifficulty.elementary,
objectives: [
'能够询问商品信息',
'表达对尺寸和颜色的需求',
'进行价格谈判和付款',
],
keyPhrases: [
'Do you have this in size...?',
'Can I try this on?',
'How much does this cost?',
'Do you accept credit cards?',
'I\'ll take it',
],
estimatedDuration: 12,
createdAt: DateTime.now().subtract(const Duration(days: 12)),
updatedAt: DateTime.now().subtract(const Duration(days: 12)),
),
// 餐厅场景
SpeakingTask(
id: 'restaurant_001',
title: '餐厅点餐',
description: '学习在餐厅点餐的完整流程',
scenario: SpeakingScenario.restaurant,
difficulty: SpeakingDifficulty.elementary,
objectives: [
'能够预订餐桌',
'阅读菜单并点餐',
'处理特殊饮食要求',
],
keyPhrases: [
'I\'d like to make a reservation',
'Can I see the menu?',
'I\'ll have the...',
'I\'m allergic to...',
'Could I get the check, please?',
],
estimatedDuration: 18,
createdAt: DateTime.now().subtract(const Duration(days: 10)),
updatedAt: DateTime.now().subtract(const Duration(days: 10)),
),
// 旅行场景
SpeakingTask(
id: 'travel_001',
title: '机场办理登机',
description: '学习在机场办理登机手续',
scenario: SpeakingScenario.travel,
difficulty: SpeakingDifficulty.intermediate,
objectives: [
'能够办理登机手续',
'处理行李托运',
'询问航班信息',
],
keyPhrases: [
'I\'d like to check in',
'Here\'s my passport',
'I have one bag to check',
'What gate is my flight?',
'What time is boarding?',
],
backgroundInfo: '机场是国际旅行的重要场所，掌握相关英语对话能够让旅行更加顺利。',
estimatedDuration: 20,
createdAt: DateTime.now().subtract(const Duration(days: 8)),
updatedAt: DateTime.now().subtract(const Duration(days: 8)),
),
// 学术讨论场景
SpeakingTask(
id: 'academic_001',
title: '课堂讨论',
description: '学习参与学术课堂讨论',
scenario: SpeakingScenario.academic,
difficulty: SpeakingDifficulty.advanced,
objectives: [
'能够表达学术观点',
'进行逻辑性论证',
'礼貌地反驳不同观点',
],
keyPhrases: [
'In my opinion...',
'The evidence suggests...',
'I disagree because...',
'That\'s an interesting point, however...',
'Could you elaborate on...?',
],
estimatedDuration: 30,
createdAt: DateTime.now().subtract(const Duration(days: 5)),
updatedAt: DateTime.now().subtract(const Duration(days: 5)),
),
// 社交聚会场景
SpeakingTask(
id: 'social_001',
title: '聚会闲聊',
description: '学习在社交聚会中的轻松对话',
scenario: SpeakingScenario.socializing,
difficulty: SpeakingDifficulty.intermediate,
objectives: [
'能够进行轻松的闲聊',
'分享个人兴趣和经历',
'保持对话的自然流畅',
],
keyPhrases: [
'How do you know the host?',
'What do you do for fun?',
'Have you been here before?',
'That sounds interesting!',
'I should probably get going',
],
estimatedDuration: 15,
createdAt: DateTime.now().subtract(const Duration(days: 3)),
updatedAt: DateTime.now().subtract(const Duration(days: 3)),
),
// 演讲展示场景
SpeakingTask(
id: 'presentation_001',
title: '产品演示',
description: '学习进行产品演示和展示',
scenario: SpeakingScenario.presentation,
difficulty: SpeakingDifficulty.advanced,
objectives: [
'能够结构化地组织演示内容',
'使用视觉辅助工具',
'处理观众的问题和反馈',
],
keyPhrases: [
'Today I\'ll be presenting...',
'As you can see in this slide...',
'Let me demonstrate...',
'Are there any questions?',
'Thank you for your attention',
],
backgroundInfo: '产品演示是商务环境中的重要技能，需要结合专业知识和演讲技巧。',
estimatedDuration: 35,
isRecommended: true,
createdAt: DateTime.now().subtract(const Duration(days: 1)),
updatedAt: DateTime.now().subtract(const Duration(days: 1)),
),
];
/// 获取所有任务
static List<SpeakingTask> getAllTasks() {
return List.from(_tasks);
}
/// 根据场景获取任务
static List<SpeakingTask> getTasksByScenario(SpeakingScenario scenario) {
return _tasks.where((task) => task.scenario == scenario).toList();
}
/// 根据难度获取任务
static List<SpeakingTask> getTasksByDifficulty(SpeakingDifficulty difficulty) {
return _tasks.where((task) => task.difficulty == difficulty).toList();
}
/// 获取推荐任务
static List<SpeakingTask> getRecommendedTasks() {
return _tasks.where((task) => task.isRecommended).toList();
}
/// 获取最近任务
static List<SpeakingTask> getRecentTasks() {
final sortedTasks = List<SpeakingTask>.from(_tasks);
sortedTasks.sort((a, b) => b.updatedAt.compareTo(a.updatedAt));
return sortedTasks.take(5).toList();
}
/// 获取热门任务（按完成次数排序）
static List<SpeakingTask> getPopularTasks() {
final sortedTasks = List<SpeakingTask>.from(_tasks);
sortedTasks.sort((a, b) => b.completionCount.compareTo(a.completionCount));
return sortedTasks.take(5).toList();
}
/// 根据ID获取任务
static SpeakingTask? getTaskById(String id) {
try {
return _tasks.firstWhere((task) => task.id == id);
} catch (e) {
return null;
}
}
/// 获取场景统计
static Map<SpeakingScenario, int> getScenarioStats() {
final stats = <SpeakingScenario, int>{};
for (final scenario in SpeakingScenario.values) {
stats[scenario] = _tasks.where((task) => task.scenario == scenario).length;
}
return stats;
}
/// 获取难度统计
static Map<SpeakingDifficulty, int> getDifficultyStats() {
final stats = <SpeakingDifficulty, int>{};
for (final difficulty in SpeakingDifficulty.values) {
stats[difficulty] = _tasks.where((task) => task.difficulty == difficulty).length;
}
return stats;
}
}