ahjesus 單詞單數-復數相互轉換C#，

ahjesus 單詞單數-復數相互轉換C#，

public static class StringUtil
    {
        /// <summary>
        /// 單詞變成單數形式
        /// </summary>
        /// <param name="word"></param>
        /// <returns></returns>
        public static string ToSingular(string word)
        {
            Regex plural1 = new Regex("(?<keep>[^aeiou])ies$");
            Regex plural2 = new Regex("(?<keep>[aeiou]y)s$");
            Regex plural3 = new Regex("(?<keep>[sxzh])es$");
            Regex plural4 = new Regex("(?<keep>[^sxzhyu])s$");

            if (plural1.IsMatch(word))
                return plural1.Replace(word, "${keep}y");
            else if (plural2.IsMatch(word))
                return plural2.Replace(word, "${keep}");
            else if (plural3.IsMatch(word))
                return plural3.Replace(word, "${keep}");
            else if (plural4.IsMatch(word))
                return plural4.Replace(word, "${keep}");

            return word;
        }
        /// <summary>
        /// 單詞變成復數形式
        /// </summary>
        /// <param name="word"></param>
        /// <returns></returns>
        public static string ToPlural(string word)
        {
            Regex plural1 = new Regex("(?<keep>[^aeiou])y$");
            Regex plural2 = new Regex("(?<keep>[aeiou]y)$");
            Regex plural3 = new Regex("(?<keep>[sxzh])$");
            Regex plural4 = new Regex("(?<keep>[^sxzhy])$");

            if (plural1.IsMatch(word))
                return plural1.Replace(word, "${keep}ies");
            else if (plural2.IsMatch(word))
                return plural2.Replace(word, "${keep}s");
            else if (plural3.IsMatch(word))
                return plural3.Replace(word, "${keep}es");
            else if (plural4.IsMatch(word))
                return plural4.Replace(word, "${keep}s");

            return word;
        }
    }

英語單詞單數變復數

一般加s.比如run-runs.以y結尾該y為i加es.比如fly-flies.但如果y前面是元音字母即aeiou.如則直接加s,還有以f或fe結尾的.加.如.knife-knives

 

單詞 單數轉復數形式

單詞在哪？