| Examination 3 | Frequency | % |
| Misuse of prepositions |
|
|
| 0 | 29 | 46.0 |
| 1 | 25 | 39.7 |
| 2 | 6 | 9.5 |
| 3 | 3 | 4.8 |
| Deficient sentences |
|
|
| 0 | 21 | 33.3 |
| 1 | 18 | 28.6 |
| 2 | 13 | 20.6 |
| 3 | 7 | 11.1 |
| 4 | 2 | 3.2 |
| 5 | 2 | 3.2 |
| Verb-conjugation errors |
|
|
| 0 | 36 | 57.1 |
| 1 | 20 | 31.7 |
| 2 | 4 | 6.3 |
| 3 | 3 | 4.8 |
| Total | 63 | 100.0 |