语法总结
seem to be doing
seemed to be making for... 写出观察者的判断，而非确定事实。
相似句：
- He seemed to be waiting for someone.
- The ship seemed to be moving closer.
manage to do
managed to circle... 表示在执行任务中成功完成动作。
相似句：
- She managed to open the box.
- We managed to catch the train.
过去进行时作背景
was holding / was taking photographs 增强侦察感和即时性。
相似句：
- He was waving when I saw him.
- They were talking quietly by the door.