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按照德国语言学家施来赫尔(August Schleicher)的语言形态分类法,英语属于aA~x+A’一分析结构,即内部屈折与外部屈折+辅助动词的分析结构,其动词具有时态变化。对于包含时态动词的语句以及以这些语句为基础的推理,标准逻辑(即传统逻辑)未加研究,也没有提供足够的工具,因此自本世纪六十年代以来,时态逻辑(tense logic)应而生,其目的就是把时态语句形式化并把包含这种语句的推理系统化。系词be作为表示问异关系和包含关系的主要词汇,在判断中使用频率最高。总的来说,一般语句中的oe有其语
According to the linguistic classification of German linguist August Schleicher, English belongs to an analytic structure of aA ~ x + A ’, namely the analysis structure of internal infidelity and external inflection + auxiliary verbs, and the verbs of them have the characteristics of temporal change . For sentences that contain temporal verbs and reasoning based on them, the standard logic (ie, traditional logic) has not been studied and has not provided sufficient tools. Therefore, since the 1960s, tense logic Its purpose is to formalize temporal statements and to systematize the reasoning that contains them. Sentence be as the main expression of interrogation and inclusion of relations, the most frequently used in judgments. In general, the oe in the general statement has its own language