“但是”与“却”是现代汉语转折复句中常见的关系标记,可根据用法的不同将“但是”分化为“但是1”和“但是2”。“但是1”、“但是2”和“却”的转折属性分别为[+强调性]、[+标记性]和[+对比性],根据三者转折属性上的差异以及“但是1”和“却”的隐现关系可以得出“但是”与“却”转折强度的等级序列。转折强度的层级性通过历时考察也获得了验证。 “But ” And “But ” is a common relationship mark in modern Chinese turning complex sentences, which can be divided into “but ” but “but ” but 2 “according to different usage. The transitional attributes of ”but 1 “, ”but 2 “ and ”but “ are [+ emphasized], [+ marked] and [+ contrast], respectively. And the relationship between ”but 1 “ and ”but “ can get the rank of ”but “ and ”but " turning strength. The hierarchical nature of the turning point has also been verified through the lapse of time.