Ⅰ类形容词和动词变形后的发音是容易被日语学习者忽略的一个问题。本文主要分析Ⅰ类形容词的否定形式、过去时、否定过去时、て形、ば形,以及动词的否定形式、过去时、否定过去时、て形、ば形、动词能动态、动词被动态、动词使役态、动词使动被动态、Vねばならない的发音规则。 Class Ⅰ adjectives and verbs after the deformation of pronunciation is easily overlooked by Japanese learners a problem. This paper mainly analyzes the negative forms of Class Ⅰ adjectives, the past tense, the negative tense, the negative form of the past, the negative form of the verb, the past tense, the past tense, the verbs, the verbs can be dynamic, the verbs are dynamic, Verb active state, the verb makes the move is dynamic, V ね ば ​​な ら な い pronunciation rules.