| 知识点（KP） | 句酷综合英语 | 中国学生作文 |
| amn. + at | 5.33 | 103.64 |
| von. + at | 4.81 | 12.96 |
| at | 59051.51 | 39669.38 |
| at/bit | 45.69 | 181.38 |
| at/lex | 59051.70 | 39669.38 |
| at/n | 145.75 | 621.86 |
| at/np | 53.85 | 207.29 |
| 名词 at | 63.99 | 233.20 |
| at/p | 58914.97 | 39060.48 |
| at/pos | 59060.72 | 39682.33 |
| at/pp | 471.43 | 699.59 |
| 介词 at | 31692.65 | 20391.77 |
| at/ske | 45.56 | 595.95 |