| 语料库 | 数量 | 频率(per 1000) | 模糊限制语所占百分比 | P-value (P-值) | |||
| 美库 | 中库 | 美库 | 中库 | 美库 | 中库 | ||
| 情态助动词(275) | 105 | 170 | 5.74 | 8.24 | 23.02% | 26.52% | *0.004 |
| 副词(166) | 61 | 105 | 3.33 | 5.09 | 13.37% | 16.38% | *0.010 |
| 动词(182) | 123 | 59 | 6.72 | 2.86 | 26.97% | 9.20% | *0.000 |
| 形容词(203) | 104 | 99 | 5.68 | 4.80 | 22.81% | 15.44% | 0.25 |
| 名词(107) | 35 | 72 | 1.91 | 3.49 | 7.67% | 11.23% | *0.004 |
| 间接缓和语(162) | 28 | 134 | 1.53 | 6.49 | 6.14% | 20.90% | *0.000 |
| 总计 | 456 | 639 | 24.93 | 30.99 |
|
| *0.000 |