| 知识点（KP） | 句酷综合英语 | 中国学生作文 |
| amn. + buy | 41.54 | 12.96 |
| von. + buy | 7.97 | 12.96 |
| buy | 2568.48 | 5946.52 |
| buy + von. | 1918.78 | 3290.67 |
| buy/bit | 1294.81 | 3407.27 |
| buy/lex | 5252.64 | 8498.73 |
| buy/n | 112.97 | 181.38 |
| buy/np | 5.33 | 0 |
| 名词 buy | 154.51 | 51.82 |
| buy/pos | 5228.02 | 8472.82 |
| buy/ske | 853.13 | 1969.22 |
| buy/v | 5115.05 | 8291.44 |
| buy/vp | 91.51 | 64.78 |
| 动词 buy | 596.58 | 1010.52 |