通过对教本所载汉字的片假名注音进行分析,我们认为:1.大量的止摄三等字保留有i介音,这种情况不仅限于知系字,而且也包括唇音字。且受止摄字的类推影响,个别山摄开口三、四等字也参与其中;2.止摄开口三等知、章、庄三组字演变不平衡,有的已经出现今舌尖元音的端倪,有的还保留有i介音;3.止摄开口三等日母字出现翘舌音的倾向。 By analyzing katakana kanji kanji contained in the analysis of the kanji, we think: 1. A large number of three words to keep the i recording interrogation, this case is not limited to Zhixing words, but also includes lip sound words. And by the analogy of the script, the individual mountain photo openings three, four and other words are also involved; 2. stop opening three and other know, Zhang, Zhuang three groups of words evolution is not balanced, and some have appeared this tongue vowel Clues, and some still keep i media; 3.