中文摘要：

本文对借口逻辑学是“必然地得出”并以此否认中国古代有逻辑的做法进行了反驳，回应了“中国无逻辑论”，从而捍卫了“中国有逻辑论”。依据中国古代思想家对推类“必然性”的认识和推类“必然地得出”的“机理”分析，本文说明了中国古代逻辑也含有“必然性”的推理。推类，反映了中国人有机整体思维的显著特点，是中国传统文化的产物。我们讨论推类是否有“必然性”的问题，决不能撇开中国传统文化中的“类同理同”观念。这是推类的根本依据，也是正确把握推类“必然性”的关键所在。

英文摘要：

This paper refutes the denial of ancient Chinese logic at the excuse of logic be- ing ＂necessarily obtained＂, criticizing the view of China＇ s lack of logic ideas and safeguarding the ground of China＇ s logic ideas. By means of understand- ing the ＂necessarily obtained＂ inferences in ancient Chinese logic and the mechanism concerned, we intend to argue that ＂necessarily obtained＂ infer- ences exist in ancient Chinese logic and that inferences reflect overall organic Chinese thinking as a product of traditional Chinese culture. It is deemed that the ＂category classification＂ concept should not be abandoned when discussing whether inferences are ＂necessarily obtained＂.