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知识短文中指出:一个正确的三段论,必须具备两个条件,一是前提真实,二是推理正确。为了保证推理过程正确,必须遵守四条主要原则:①不能有四概念,②中词至少有一次是周延的,③两个前提不能都是否定的,④在前提中不周延的概念,在结论中不能周延。为了让学生把这一知识转变为能力,我指导学生运用分步筛选的方法,收到了较好的效果。第一步看前提是否真实。如果前提真实,那么,第二步看两个前提是
According to the brief essay, a correct syllogism must have two conditions: first, the premise is true; second, the reasoning is correct. In order to ensure that the reasoning process is correct, we must abide by the four main principles: ① can not have four concepts, ② the middle of the word is at least once extended, ③ both premise can not be negative, ④ premise of the concept of non-continuity in the conclusion Can not be extended. In order for students to translate this knowledge into abilities, I instruct students to apply the method of step-by-step screening and receive good results. The first step to see if the premise is true. If the premise is true, then the second step is to look at the two premises