洪堡特曾经说过,语言是对有限手段的无限运用。受这一思想启发,本文以and和英语进行体为例,从历时与共时两个角度展开研究。结果发现一条重要的语言规律:语言是对有限形式的无限运用。这一结果具有重要的价值:一方面,有利于更加深刻地理解语言的使用属性;另一方面,可以增强对学生语用能力的培养。 Humboldt once said that language is an unlimited use of limited means. Inspired by this thought, this article takes the example of and and English as an example, and studies it from two aspects: diachronic and synchronic. The result was an important linguistic law: language was an unlimited use of limited forms. This result is of great value: on the one hand, it helps to understand the use of language more profoundly; on the other hand, it can enhance students’ pragmatic competence.