一底地的“底”和“地”都是近代汉语作品中出现的结构助词。“地”字早出，从某些作品（如（景德传灯录y朱子语类》看，它与“底”在用法上也有明显差异，O记录的应该是不同于“底”的另外一个词。后来，由于两个字的读音由相近到相同，因而书面写法上渐趋混一。（刑部）中作 The “bottom” and “ground” of the bottom are the structural auxiliary words appearing in the works of modern Chinese. The word “地” comes out early. From some works (such as “Jingdezhen”), there is also a significant difference in usage between “地” and “底”. O should be recorded as another word different from “底” Later, as the pronunciation of the two words was similar to the same, the writing style became increasingly mixed.