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