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The Application of Graduation in Political Speech

In this paper, the graduation system in appraisal theory is combed, and the development and theoretical origin of the graduation system are discussed. The development of graduation system can be divided into three stages: embryonic stage, develop stage and mature stage. The graduation system embodies three important thoughts: the thought of grading, the thought of strengthening, the thought of vagueness. They are interrelated and have a broad theoretical basis. Tracing the development of the graduation system and its theoretical sources will help us to further to understand and improve the graduation system, and better apply the evaluation theory to discourse analysis, language teaching and other research fields. Political speech is a written oral speech that reflects the value of the discourse information conveyed by the speaker by means of explicit or implicit evaluation. These value judgments and their evaluation resources also reflect the speaker's position, views and attitudes. In the appraisal theory, the speaker uses the graduation system to increase the intensity of discourse. This paper proves that the graduation to analyse the special political speech is useful, it enriches the research on political speech and provides valuable inspiration for Chinese and foreign scholars in the relevant academic writing.