析"但"类A、B意思之间的相反相对

在语法学教科书和语法学著作中 ,关于转折句的定义 ,几乎都强调了前后两个分句的意思必须相反、相对 ,或者部分相反相对 ,但在语言现象中 ,有些转折句前后两部分的意思并不相反相对。怎样看待这一现象呢 ?如果能从语义、语法、语用三个方面去观察、去分析 ,则能对转折句里出现的A、B之间所具有的相反相对的意思作出合理的解释。

On Opposites Between the Meanings of Clause A and Clause B In"But" Sentence

In almost all the textbooks and works on grammar, the definition of "but" sentence emphasizes that the meanings of the two clauses must be opposite to each other completely or partly. While real language phenomena reveals the meanings of the two clauses in some "but" sentences are not opposite to each other. How to comprehend such phenomena? Maybe a reasonable explanation to the opposites between the meanings of clause A and clause B can be attained if they are studied and analy from semantic, grammatical and pragmatic aspects.