Before drawing the knowledge tree, we should have a detailed description of it.

The knowledge tree should be hierarchical. For example, a knowledge tree is like a traffic map of China. The first level of knowledge is like a province, the second level is like a city, the third level is like a county, and there are more detailed knowledge cells under the third level, just like a town.

Structure diagram: theme, main content on the first floor, just one branch; The second layer is to divide the text into several parts (that is, the meaning of the meaning paragraph), and several paragraphs are divided into several branches; The third layer is the sense of hierarchy of each part, some with and some without, drawn according to their own understanding of the text; The fourth layer is the key words of each paragraph.

Harvest map: theme; The first layer is divided into three branches: main content, learning comprehension and writing methods; The second layer is to deduce the meaning of the paragraph from the main content, the key sentences and feelings from the study of literature, and the beautiful words from the writing method; The meaning of the third layer can be deduced from the meaning of the layer or keyword.