数字分类支持 1-999 数字学习，按规则运行时生成词条

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

LearnEnglish/LearnEnglish/Models/NumberWords.swift

@@ -0,0 +1,115 @@
+import Foundation
+
+enum NumberWords {
+    static let range = 1...999
+
+    private static let atomNumbers: [String: Int] = [
+        "one": 1, "two": 2, "three": 3, "four": 4, "five": 5,
+        "six": 6, "seven": 7, "eight": 8, "nine": 9, "ten": 10,
+        "eleven": 11, "twelve": 12, "thirteen": 13, "fourteen": 14, "fifteen": 15,
+        "sixteen": 16, "seventeen": 17, "eighteen": 18, "nineteen": 19, "twenty": 20,
+        "thirty": 30, "forty": 40, "fifty": 50, "sixty": 60,
+        "seventy": 70, "eighty": 80, "ninety": 90, "hundred": 100
+    ]
+
+    private static let ones = [
+        "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten",
+        "eleven", "twelve", "thirteen", "fourteen", "fifteen",
+        "sixteen", "seventeen", "eighteen", "nineteen"
+    ]
+
+    private static let onesPhonetics = [
+        "wʌn", "tuː", "θriː", "fɔːr", "faɪv", "sɪks", "ˈsevn", "eɪt", "naɪn", "ten",
+        "ɪˈlevn", "twelv", "ˌθɜːrˈtiːn", "ˌfɔːrˈtiːn", "ˌfɪfˈtiːn",
+        "ˌsɪksˈtiːn", "ˌsevnˈtiːn", "ˌeɪˈtiːn", "ˌnaɪnˈtiːn"
+    ]
+
+    private static let tens: [Int: String] = [
+        20: "twenty", 30: "thirty", 40: "forty", 50: "fifty",
+        60: "sixty", 70: "seventy", 80: "eighty", 90: "ninety"
+    ]
+
+    private static let tensPhonetics: [Int: String] = [
+        20: "ˈtwenti", 30: "ˈθɜːrti", 40: "ˈfɔːrti", 50: "ˈfɪfti",
+        60: "ˈsɪksti", 70: "ˈsevnti", 80: "ˈeɪti", 90: "ˈnaɪnti"
+    ]
+
+    static func makeWords(atoms: [Word]) -> [Word] {
+        var byNumber: [Int: Word] = [:]
+        for atom in atoms {
+            if let number = atomNumbers[atom.word] {
+                byNumber[number] = atom
+            }
+        }
+        return range.map { byNumber[$0] ?? makeWord($0) }
+    }
+
+    static func english(_ n: Int) -> String {
+        switch n {
+        case 1...19:
+            return ones[n - 1]
+        case 20...99:
+            let ten = n / 10 * 10
+            let one = n % 10
+            return one == 0 ? tens[ten]! : "\(tens[ten]!)-\(ones[one - 1])"
+        case 100...999:
+            let head = "\(ones[n / 100 - 1]) hundred"
+            let rest = n % 100
+            return rest == 0 ? head : "\(head) \(english(rest))"
+        default:
+            return "\(n)"
+        }
+    }
+
+    static func phonetic(_ n: Int) -> String {
+        switch n {
+        case 1...19:
+            return onesPhonetics[n - 1]
+        case 20...99:
+            let ten = n / 10 * 10
+            let one = n % 10
+            return one == 0 ? tensPhonetics[ten]! : "\(tensPhonetics[ten]!) \(onesPhonetics[one - 1])"
+        case 100...999:
+            let head = "\(onesPhonetics[n / 100 - 1]) ˈhʌndrəd"
+            let rest = n % 100
+            return rest == 0 ? head : "\(head) \(phonetic(rest))"
+        default:
+            return ""
+        }
+    }
+
+    static func chinese(_ n: Int) -> String {
+        let digits = ["零", "一", "二", "三", "四", "五", "六", "七", "八", "九"]
+        switch n {
+        case 0...9:
+            return digits[n]
+        case 10...19:
+            return "十" + (n % 10 == 0 ? "" : digits[n % 10])
+        case 20...99:
+            return digits[n / 10] + "十" + (n % 10 == 0 ? "" : digits[n % 10])
+        case 100...999:
+            let head = digits[n / 100] + "百"
+            let rest = n % 100
+            switch rest {
+            case 0:
+                return head
+            case 1...9:
+                return head + "零" + digits[rest]
+            case 10...19:
+                return head + "一十" + (rest % 10 == 0 ? "" : digits[rest % 10])
+            default:
+                return head + digits[rest / 10] + "十" + (rest % 10 == 0 ? "" : digits[rest % 10])
+            }
+        default:
+            return "\(n)"
+        }
+    }
+
+    private static func makeWord(_ n: Int) -> Word {
+        Word(word: english(n),
+             phonetic: "/\(phonetic(n))/",
+             meaning: chinese(n),
+             example: "I can count to \(english(n)).",
+             exampleMeaning: "我能数到\(chinese(n))。")
+    }
+}

LearnEnglish/LearnEnglish/Models/Quiz.swift

@@ -62,10 +62,10 @@ enum QuizGenerator {
 
     private static func blankWord(_ word: String) -> String {
         let chars = Array(word)
-        let count = chars.count
+        let letterPositions = chars.indices.filter { chars[$0].isLetter }
-        guard count > 2 else { return String(repeating: "_", count: count) }
+        guard letterPositions.count > 2 else { return String(repeating: "_", count: chars.count) }
-        let blanks = max(1, Int(Double(count) * 0.4))
+        let blanks = max(1, Int(Double(letterPositions.count) * 0.4))
-        let indices = Set(Array(0..<count).shuffled().prefix(blanks))
+        let indices = Set(letterPositions.shuffled().prefix(blanks))
         return chars.enumerated().map { indices.contains($0.offset) ? "_" : String($0.element) }.joined()
     }
 }

LearnEnglish/LearnEnglish/Resources/words.json

@@ -166,7 +166,15 @@
         { "word": "seventeen", "phonetic": "/ˌsevnˈtiːn/", "meaning": "十七", "example": "He got seventeen points.", "exampleMeaning": "他得了十七分。" },
         { "word": "eighteen", "phonetic": "/ˌeɪˈtiːn/", "meaning": "十八", "example": "She is eighteen years old.", "exampleMeaning": "她十八岁。" },
         { "word": "nineteen", "phonetic": "/ˌnaɪnˈtiːn/", "meaning": "十九", "example": "Nineteen people came to the party.", "exampleMeaning": "十九个人来参加了聚会。" },
-        { "word": "twenty", "phonetic": "/ˈtwenti/", "meaning": "二十", "example": "I have twenty yuan.", "exampleMeaning": "我有二十元。" }
+        { "word": "twenty", "phonetic": "/ˈtwenti/", "meaning": "二十", "example": "I have twenty yuan.", "exampleMeaning": "我有二十元。" },
+        { "word": "thirty", "phonetic": "/ˈθɜːrti/", "meaning": "三十", "example": "She has thirty stamps.", "exampleMeaning": "她有三十张邮票。" },
+        { "word": "forty", "phonetic": "/ˈfɔːrti/", "meaning": "四十", "example": "There are forty students.", "exampleMeaning": "有四十个学生。" },
+        { "word": "fifty", "phonetic": "/ˈfɪfti/", "meaning": "五十", "example": "My grandfather is fifty.", "exampleMeaning": "我爷爷五十岁。" },
+        { "word": "sixty", "phonetic": "/ˈsɪksti/", "meaning": "六十", "example": "An hour has sixty minutes.", "exampleMeaning": "一小时有六十分钟。" },
+        { "word": "seventy", "phonetic": "/ˈsevnti/", "meaning": "七十", "example": "My grandmother is seventy.", "exampleMeaning": "我奶奶七十岁。" },
+        { "word": "eighty", "phonetic": "/ˈeɪti/", "meaning": "八十", "example": "He can count to eighty.", "exampleMeaning": "他能数到八十。" },
+        { "word": "ninety", "phonetic": "/ˈnaɪnti/", "meaning": "九十", "example": "The book has ninety pages.", "exampleMeaning": "这本书有九十页。" },
+        { "word": "hundred", "phonetic": "/ˈhʌndrəd/", "meaning": "百", "example": "One hundred people came.", "exampleMeaning": "来了一百个人。" }
       ]
     },
     {

LearnEnglish/LearnEnglish/Services/WordStore.swift

@@ -26,7 +26,13 @@ final class WordStore {
         }
         do {
             let data = try Data(contentsOf: url)
-            bank = try JSONDecoder().decode(WordBank.self, from: data)
+            let decoded = try JSONDecoder().decode(WordBank.self, from: data)
+            let categories = decoded.categories.map { category -> WordCategory in
+                guard category.id == "numbers" else { return category }
+                return WordCategory(id: category.id, name: category.name, icon: category.icon,
+                                    words: NumberWords.makeWords(atoms: category.words))
+            }
+            bank = WordBank(version: decoded.version, categories: categories)
         } catch {
             loadError = WordStoreError.decodingFailed(error).localizedDescription
         }

LearnEnglish/LearnEnglish/Views/QuizSetupViewController.swift

@@ -162,10 +162,15 @@ final class QuizSetupViewController: UIViewController {
     }
 
     private func setupCountControl() {
+        if request.words.count > 50 {
+            countControl.insertSegment(withTitle: "随机 10 题", at: 0, animated: false)
+            countControl.insertSegment(withTitle: "随机 20 题", at: 1, animated: false)
+        } else {
             countControl.insertSegment(withTitle: "全部 \(request.words.count) 题", at: 0, animated: false)
             if request.words.count > 10 {
                 countControl.insertSegment(withTitle: "随机 10 题", at: 1, animated: false)
             }
+        }
         countControl.selectedSegmentIndex = 0
     }
 
@@ -198,9 +203,15 @@ final class QuizSetupViewController: UIViewController {
     private func startQuiz() {
         guard let selectedIndex else { return }
         Haptics.selection()
-        let words = countControl.selectedSegmentIndex == 0
+        let words: [Word]
-            ? request.words
+        if request.words.count > 50 {
-            : Array(request.words.shuffled().prefix(10))
+            let count = countControl.selectedSegmentIndex == 0 ? 10 : 20
+            words = Array(request.words.shuffled().prefix(count))
+        } else if countControl.selectedSegmentIndex == 0 {
+            words = request.words
+        } else {
+            words = Array(request.words.shuffled().prefix(10))
+        }
         let config = QuizConfig(mode: items[selectedIndex].mode, words: words)
         navigationController?.pushViewController(QuizViewController(config: config), animated: true)
     }

LearnEnglish/LearnEnglish/Views/SpellingInputView.swift

@@ -126,8 +126,19 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
 
     private func rebuildBoxes() {
         stack.arrangedSubviews.forEach { $0.removeFromSuperview() }
+        let count = CGFloat(max(chars.count, 1))
+        let available = (window?.screen.bounds.width ?? 390) - 32
+        var spacing: CGFloat = 6
+        var boxWidth = (available - spacing * (count - 1)) / count
+        if boxWidth < 16 {
+            spacing = 3
+            boxWidth = (available - spacing * (count - 1)) / count
+        }
+        boxWidth = min(36, boxWidth)
+        stack.spacing = spacing
+        let fontSize = min(22, max(12, boxWidth * 0.62))
         boxViews = chars.enumerated().map { index, ch in
-            let box = makeBox()
+            let box = makeBox(fontSize: fontSize)
             box.tag = index
             if ch != "_", let label = box.viewWithTag(100) as? UILabel {
                 label.text = ch.uppercased()
@@ -136,7 +147,7 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
             box.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(boxTapped(_:))))
             stack.addArrangedSubview(box)
             NSLayoutConstraint.activate([
-                box.widthAnchor.constraint(equalToConstant: 36),
+                box.widthAnchor.constraint(equalToConstant: boxWidth),
                 box.heightAnchor.constraint(equalToConstant: 44)
             ])
             return box
@@ -158,7 +169,7 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
         activate()
     }
 
-    private func makeBox() -> UIView {
+    private func makeBox(fontSize: CGFloat) -> UIView {
         let box = UIView()
         box.backgroundColor = .quaternarySystemFill.withAlphaComponent(0.15)
         box.layer.cornerRadius = 8
@@ -166,8 +177,7 @@ final class SpellingInputView: UIView, UITextFieldDelegate {
         box.layer.borderColor = UIColor.separator.cgColor
 
         let label = UILabel()
-        label.font = .preferredFont(forTextStyle: .title2)
+        label.font = .systemFont(ofSize: fontSize, weight: .bold)
-        label.font = .systemFont(ofSize: label.font.pointSize, weight: .bold)
         label.isHidden = true
         label.tag = 100
         box.addSubview(label)