| 知识点（KP） | 南京大学202x | 美国英语新闻 |
| amn. + but | 111.22 | 26.02 |
| von. + but | 10.11 | 1.08 |
| but | 72726.91 | 77846.03 |
| 形容词 but | 761.71 | 644.18 |
| but/avp | 1759.36 | 1154.13 |
| 副词 but | 2045.84 | 1250.93 |
| but/bit | 6265.61 | 4745.64 |
| but/c | 66950.01 | 74945.31 |
| but/conjp | 2979.45 | 3240.47 |
| but | 2989.56 | 3246.18 |
| but/d | 1988.55 | 1296.68 |
| but/lex | 72726.91 | 77851.11 |
| but/n | 168.52 | 56.45 |
| but/np | 6.74 | 4.94 |
| 名词 but | 623.53 | 175.18 |
| but/p | 3902.95 | 1614.96 |
| but/pos | 73020.13 | 77921.53 |
| 介词 but | 2551.41 | 832.31 |
| but/r | 10.11 | 8.13 |
| but/ske | 43043.62 | 59081.18 |
| 动词 but | 128.08 | 3.01 |
| but/pp | 0 | 2.20 |