“在语言表达中恰当地运用成语,不仅使语言精练,使语言形象生动,还可以丰富充实口语词汇。”(王力《中国成语大辞典》序言,上海辞书出版社,1986年版)就成语的形式而言,多为四字格,有些成语的省写形式却是二字格。二字格成语是由四字格成语简化而成的,如“砖引、抛砖、引玉”是“抛砖引玉”的 “Appropriate use of idioms in language expression not only makes the language concise and vivid, but also enriches the oral vocabulary.” (Wang Li “Preface to the Chinese Idioms Dictionary”, Shanghai Lexicographical Press, 1986 Edition) for idioms In terms of form, most of them are four-character grids, and some idioms are written in two-character format. Two-character idioms are simplified by four-character idioms. For example, “brick quotations, brick-throwing, and citing jade” are “bricks citing jade”.