关于英语单词单复数转换方法在程序中的实现

这里是PHP的实现方法，其实在csharp或java中，实现方式都是差不多的。

/** * wirror: pluralize a string * @param $string */ function pluralize( $string ) { $plural = array( array( '/(quiz)$/i', "$1zes" ), array( '/^(ox)$/i', "$1en" ), array( '/([m|l])ouse$/i', "$1ice" ), array( '/(matr|vert|ind)ix|ex$/i', "$1ices" ), array( '/(x|ch|ss|sh)$/i', "$1es" ), array( '/([^aeiouy]|qu)y$/i', "$1ies" ), array( '/([^aeiouy]|qu)ies$/i', "$1y" ), array( '/(hive)$/i', "$1s" ), array( '/(?:([^f])fe|([lr])f)$/i', "$1$2ves" ), array( '/sis$/i', "ses" ), array( '/([ti])um$/i', "$1a" ), array( '/(buffal|tomat)o$/i', "$1oes" ), array( '/(bu)s$/i', "$1ses" ), array( '/(alias|status)$/i', "$1es" ), array( '/(octop|vir)us$/i', "$1i" ), array( '/(ax|test)is$/i', "$1es" ), array( '/s$/i', "s" ), array( '/$/', "s" ) ); $singular = array( array("/s$/", ""), array("/(n)ews$/", "$1ews"), array("/([ti])a$/", "$1um"), array("/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/", "$1$2sis"), array("/(^analy)ses$/", "$1sis"), array("/([^f])ves$/", "$1fe"), array("/(hive)s$/", "$1"), array("/(tive)s$/", "$1"), array("/([lr])ves$/", "$1f"), array("/([^aeiouy]|qu)ies$/", "$1y"), array("/(s)eries$/", "$1eries"), array("/(m)ovies$/", "$1ovie"), array("/(x|ch|ss|sh)es$/", "$1"), array("/([m|l])ice$/", "$1ouse"), array("/(bus)es$/", "$1"), array("/(o)es$/", "$1"), array("/(shoe)s$/", "$1"), array("/(cris|ax|test)es$/", "$1is"), array("/([octop|vir])i$/", "$1us"), array("/(alias|status)es$/", "$1"), array("/^(ox)en/", "$1"), array("/(vert|ind)ices$/", "$1ex"), array("/(matr)ices$/", "$1ix"), array("/(quiz)zes$/", "$1") ); $irregular = array( array( 'move', 'moves' ), array( 'sex', 'sexes' ), array( 'child', 'children' ), array( 'man', 'men' ), array( 'person', 'people' ) ); $uncountable = array( 'sheep', 'fish', 'series', 'species', 'money', 'rice', 'information', 'equipment' ); // save some time in the case that singular and plural are the same if ( in_array( strtolower( $string ), $uncountable ) ) return $string; // check for irregular singular forms foreach ( $irregular as $noun ) { if ( strtolower( $string ) == $noun[0] ) return $noun[1]; } // check for matches using regular expressions foreach ( $plural as $pattern ) { if ( preg_match( $pattern[0], $string ) ) return preg_replace( $pattern[0], $pattern[1], $string ); } return $string; }