cannot be mixed. < br > generally, the same article will not be used at the same time, that is, the same article will use "でぁる" or "だ", which needs to be unified. でぁる is usually called the style of an article. When writing a thesis, you usually use でぁる instead of だます :ますto refer to verbs, adjectives and nouns. Respect style is a style that pays tribute to the receiver or reader directly. To be precise, the respect style expresses a serious tone. Therefore, です and ます are mainly used in letters, daily conversations, public speeches and other occasions. < < br > > Simplified: Simplified is mainly used for writing articles, novels, diaries or talking with close people. Generally speaking, simplification is the prototype form of nouns, verbs, adjectives and descriptive verbs, including the prototype forms of various tense and voice deformations.