| Items | TA | OA | P | ||
| number | percentage | number | percentage | ||
| To-infinitive | 129 | 4.88% | 149 | 6.22% | 0.000 < 0.05 |
| Wh-clause | 76 | 2.88% | 130 | 5.42% | 0.000 < 0.05 |
| That-clause | 150 | 5.68% | 286 | 11.94% | 0.000 < 0.05 |
| Subtotal | 355 | 13.43% | 565 | 23.59% | 0.000 < 0.05 |