| 知识点（KP） | 南京大学202x | 美国英语新闻 |
| a | 254301.50 | 283832.44 |
| a + amn. | 953.83 | 468.33 |
| a/a | 283415.19 | 314537.00 |
| a/ajp | 253327.45 | 279035.09 |
| 形容词 a | 295268.94 | 327948.03 |
| a/bit | 30.33 | 47.95 |
| a/lex | 296182.34 | 332724.06 |
| a/n | 202.23 | 430.31 |
| a/p | 960.57 | 4984.32 |
| a/pos | 284577.97 | 319951.62 |
| a/pp | 10.11 | 4.27 |
| 介词 a | 667.34 | 3241.28 |
| a/ske | 47.19 | 48.31 |
| a/c | 0 | 3.64 |
| a/c/n | 0 | 3.64 |