引言:我们不断收到教师和学生的来信,探讨他们“常用逻辑用语”发现的问题和困惑.在分析问题、辨明困惑的过程中,笔者也在思考,这些问题产生的原因是什么,一方面当然有“要给学生一杯水,教师必须有一桶水”的问题,即学生学习常用逻辑用语8课时的知识,作为教师可能需要了解全部逻辑用语的知识,例如8课时中没有开语句(条件命题),但是教师需要清楚;另一方面,这部分教材的组织和呈现可能也是造成问题和困惑的一个原因.因此,作为教材编 Introduction: We keep receiving letters from teachers and students and discussing the problems and puzzles they find in “Common Logical Terms.” In analyzing and identifying confusion, the author is also thinking about what causes these problems, On the one hand, of course, there is the problem of “giving a student a glass of water and the teacher must have a bucket of water”, that is, students learn eight hours of commonly used logical terms. As a teacher, they may need to know all the logical terms, for example, Sentence (conditional proposition), but teachers need to be clear; on the other hand, the organization and presentation of this part of the textbook may also be a cause of problems and confusion .Therefore, as a textbook