语法总结
after + 动名词
after spending the whole night... 表示“在……之后”，介词后使用动名词。
相似句：
- After finishing work, he went home.
- She left after saying goodbye.
on + 动名词表示一……就……
On arriving at the shore 表示到达岸边后立即发生下一动作。
相似句：
- On hearing the news, she cried.
- On entering the room, he sat down.