| 知识点（KP） | 南京大学202x | 美国英语新闻 |
| von. + must | 16.85 | 2.11 |
| must | 19363.06 | 4733.32 |
| must + von. | 74.15 | 2.20 |
| must/bit | 269.63 | 30.83 |
| must/lex | 19467.54 | 4743.03 |
| must/n | 630.27 | 51.41 |
| must/np | 16.85 | 1.53 |
| 名词 must | 316.82 | 26.96 |
| must/pos | 19467.54 | 4743.44 |
| must/ske | 148.30 | 14.83 |
| must/v | 18837.27 | 4692.02 |
| must/vp | 18341.82 | 4602.68 |
| 动词 must | 18422.71 | 4625.38 |
| amn. + must | 0 | 3.60 |