这一单元是初中学生第一次系统的接触说明文,本单元的学习重点是掌握“有条理的说明事物”的方法,说明事物必须讲求说明的顺序,这一单元的突破口笼统的说是“说明的顺序”。 说明的顺序常见的有三种:时间顺序、空间顺序和逻辑顺序。学生所接触的说明文往往不是单一顺序。有时,文章大的结构安排采用一种顺序,而在某一个局部,根据内容的需要采用的是另一种说明顺序。 对说明的“时间顺序”和“空间顺序”学生尚容易理解,按照“逻辑顺序”说明事理则比较困难。逻辑顺序是指由现象到概念、由一般到特殊、由主到次、由简到繁等的顺序。学生理解“逻辑顺序应明白两点:一是明确范围——说明事理 This module is the first systematic explanation for students of junior high schools. The focus of this unit is to grasp the method of “orderly explanation of things” and explain the order in which things must be explained. The breakthrough of this unit is generally stated as “ Order“. There are three common order of description: time order, space order, and logical order. The explanatory texts that students are exposed to are often not in a single sequence. Sometimes, the structure of a large article is arranged in a sequence, and in a certain part, another description sequence is used according to the needs of the content. It is still easy for the students to explain the ”time sequence“ and ”spatial sequence“. It is more difficult to explain the affairs according to the ”logical order“. Logical order refers to the sequence from phenomena to concept, from general to special, from primary to secondary, and from simple to complex. Students understand that ”the logical sequence should understand two things: First, a clear scope - explain the reason