| 知识点（KP） | 句酷综合英语 | 中国学生作文 |
| amn. + must | 4.02 | 25.91 |
| von. + must | 1.65 | 12.96 |
| must | 6375.03 | 31675.91 |
| must + von. | 3.29 | 362.75 |
| must/bit | 33.97 | 919.83 |
| must/lex | 6377.07 | 32142.30 |
| must/n | 50.69 | 272.06 |
| must/np | 1.71 | 38.87 |
| 名词 must | 28.44 | 103.64 |
| must/pos | 6378.12 | 32103.44 |
| must/ske | 16.33 | 544.13 |
| must/v | 6327.43 | 31831.37 |
| must/vp | 6244.09 | 30186.04 |
| 动词 must | 6264.10 | 30548.79 |