Tongue rolling is a kind of sound change caused by tongue rotation. Its most obvious feature is that the two words of the original two syllables become another new syllable different from the first two syllables after the tongue is rolled, that is, the original pronunciation is changed. The pronunciation of the word "er" is the official pronunciation of the word "er" in words and expressions, without changing the original pronunciation of the previous word. Erhua is a phenomenon that the last vowel of some words is changed by rolling the tongue. R is usually added after vowels, indicating that the pronunciation can be Er-hua.
Hua Er Yin, Xiangzi Change Rhyme and D Change Rhyme? Similarly, as a kind of root sound change, it includes two methods: root sound change and suffix sound change. Many dialects reflect the change of vowels, but some dialects also have the change of initials and tones? . The vowels after tongue rolling are still syllables, and the pronunciation of tongue rolling is usually written by two Chinese characters, such as Shui Guan 'er (a few of the ancient M are like "Hua Er"), which can be divided into three situations: the root sound changes, Hua Er {Hua Er}; The words at the end of the word are read in tone sandhi, and the words at the root remain unchanged; Don't read suffix words, and don't change the pronunciation of root words.
Retroflex vowels. Modern Chinese and Putonghua all have vowels, which are also called Er Hua Yun. When the vowels are retroflex, the pronunciation changes. Many different vowels have the same pronunciation after tongue rolling, so to sum up, Putonghua has two series of tongue rolling phonology consisting of 39 vowels, which are divided into 7 kinds.
Er Hua mainly appears in modern Mandarin, represented by Putonghua. In addition, the use of Er Hua is the most common in the northern region, while Nanjing dialect, Sichuan dialect and Chongqing dialect distributed in the southern region also have a certain number of Er Hua phenomena, and Hangzhou dialect also has similar Er Hua phenomena.