应用文体，是指人们在日常生活、工作、学习中处理公务和私事时广泛使用的以叙述、议论、说明为基本表达方式的一种实用性很强、体式比较固定的文体。应用文体是个“大家族”，依据不同的社会功用和写作要求，大致可划分为法定公文、通用文书、专业文书、日用文书四个大类。其 Applied style refers to a kind of practical and strong style with relatively fixed style, which is widely used by people in handling public affairs and private affairs in their daily life, work and study, and whose basic expressions are narration, discussion and explanation. Applied style is a “big family”, according to different social functions and writing requirements, can be roughly divided into four categories: official documents, general documents, professional documents, daily instruments. its