| 知识点（KP） | 南京大学202x | 美国英语新闻 |
| amn. + at | 53.93 | 4.81 |
| von. + at | 6.74 | 3.82 |
| at | 32335.80 | 65997.87 |
| at/bit | 74.15 | 34.96 |
| at/lex | 32335.80 | 65998.32 |
| at/n | 229.19 | 206.41 |
| at/np | 30.33 | 97.07 |
| 名词 at | 43.82 | 106.69 |
| at/p | 32130.21 | 65807.18 |
| at/pos | 32359.39 | 66013.60 |
| at/pp | 471.86 | 703.96 |
| 介词 at | 17098.14 | 29928.70 |
| at/ske | 161.78 | 47.59 |