He sat there ,waiting for his son 还有 My mum was in her room,absorbedin her experiment

问题描述:

He sat there ,waiting for his son 还有 My mum was in her room,absorbedin her experiment
为什么第一句用ing形式 第二句要用ed形式吖 不是说ing表主动 ed表被动吗

第一句用ing形式表示正在进行的动作或者说是主动发出的,第二句要用ed形式,是因为是被动,是被吸引的,所以用ed形式.