ONT.

例句：

1. 1. The cake is on the table, and I'm hungry.
   蛋糕在桌子上，我饿了。
2. 2. He climbed up the tree to get a better view.
   他爬上树去获得更好的视野。
3. 3. She was on top of the mountain before dawn.
   她在黎明之前登上了山顶。