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假言判断的联结项表示着假言判断存在条件与结论之间的制约关系。教学中,紧紧抓住三种关系的区别,使学生准确地运用联结项,就会减少他们在语言表达中的逻辑性错误。充分条件的假言判断是说:产生某个结果可以有多个条件,而其中每一个条件的存在都可以导致这个结果。在“如果学习不努力,就不能取得好成绩”这个判断中,前件反映的是条件,后件反映的是具备这个条件时所产生的结果。“不能取得好成绩”的条件有多个,如学习目的不明确,学习不努力,学习方法不好等等。具备了其中一个条件,就能有这样的结果。其图式是:
Hypothesis judgments of the items that link the hypothesis to determine the existence of constraints and conclusions between the constraints. Teaching, grasp the difference between the three kinds of relationships, to enable students to accurately use the joint items, will reduce their logic errors in language expression. The hypothesis of sufficient conditions to judge is: produce a result can have multiple conditions, and each of these conditions can lead to this result. In the judgment that “if you do not work hard, you can not achieve good grades,” the antecedent reflects the conditions, and the consequent reflects the result of having this condition. There are many conditions that can not achieve good grades, such as unclear learning goals, lack of study, poor learning methods, and so on. With one of the conditions, we can have such a result. Its schema is: