| The three groups of words selected in this paper are all commonly used words in modern Chinese.There were a lot of words changed,forming hundreds of groups of different Chinese characters with the same word,many of which reflected the diachronic development and change of Chinese characters.This paper takes variant as the starting point,selects three of them,and explores the use of these words in various times,the diachronic development,changes and causes of the use of words,and the diachronic development and evolution of the meaning of words.The full text is divided into five chapters.The first chapter is the introduction part,which explains the reason for choosing the topic,the research status and shortcomings,the research content and methods,the significance of the topic and the innovation.The second chapter is the study of the diachronic evolution of {棵}.Its earliest use of the word "科",noun usage has been seen in the Three Kingdoms,and the use of quantifiers appeared in the Southern and Northern Dynasties.In the Tang Dynasty,due to the expansion of the function of "科","窠" was introduced into the form of {棵} and became the main word in the Song Dynasty.In the Yuan Dynasty,"科" rose again,and "棵" also entered the character system of {棵}.In the Ming Dynasty,"颗","稞" and "柯" were also used to represent {棵},but they were at a disadvantage in the competition with " 棵 ".In the Qing Dynasty," 棵 " has occupied an absolute advantage,and has continued to modern times.The third chapter is the study of the diachronic evolution of {升}.It is found that in the Pre Qin period,the characters of {升} include "升","阩","陞","竔" and so on,and the main character was "陞".During the Han,Wei and Six Dynasties,the characters of{升} include "升","昇" and "陞".In the Tang Dynasty,"曻" was introduced into the character system,but "昇" was still the main word of {升}.In the Song Dynasty,t "阩" and "陹" joined the competition,"升" became the main character and continued to the Yuan Dynasty.During the Ming and Qing Dynasties,the amount of " 陞" increased,exceeding "升",and the three characters had a division of functions.By the end of the Qing Dynasty,"升" had an absolute advantage and became the dominant word of {升}.During the period of the Republic of China,"昇" and "陞" were rarely used,"阩" and "陹" were no longer used,and the main character of {升} was still "升".In modern Chinese,"升" has won the competition of characters and become the standard character.The fourth chapter is the study of the diachronic evolution of {暗}.It is found that in the Pre Qin period,the characters of {暗} include "暗","闇","晻" and "奄",and "闇" was the main character.The dominant position of "晻" continued to the Han,Wei and Six Dynasties.The meaning of {暗} also developed rapidly during this period,with rich collocation.In the Tang Dynasty,"暗" became the main character of {暗},and the meanings of {暗} gradually developed and improved during this period.In the Song Dynasty," " " " was introduced into thecharacter system of { 暗 },but the competitiveness of the two characters was weak,and "dark" was still the main character.In the Yuan Dynasty,the character replacement has been completed,and "暗" occupied an absolutely dominant position.During the Ming and Qing Dynasties," " and "暏" were introduced to represent { 暗 },but these two characters were rarely used.In modern Chinese,"暗" becoming the standard word. |