The boy looked disappointed__(lose) the chance to study abroad.__(live) in Berlin many years,he knew the city very well.

问题描述:

The boy looked disappointed__(lose) the chance to study abroad.__(live) in Berlin many years,he knew the city very well.填什么,求讲解

losing  (你把句子前后换一下次序,也许更容易理解) Losing the chance to study abroad, the boy looked disappointed.

Having lived .(由于主句动作明显晚于分词动作,故分词用完成式)