Factive
叙实的, 事实性的 （如 know 和 realize）
🗣️ 情景例句
We'd wait until dark and make a fire,
我们等到天黑就升火，
He that would know what shall be must consider what has been.
欲知未然，须思已然。
To serve the people well, I study hard.
为了更好的服务于人民，我好好学习。