1.they would watch him prospecting the fields or the hills, eyes closed, hands clenched on the fork of an alder bough.

【参考译文】他们都会看到他勘察田地或山岗，双眼紧闭，双手紧握桤木树杈。
【结构解析】这里用了watch sb. doing sth.意思是“看到某人正在做某事”。“eyes closed, hands clenched...”做“prospecting ”的伴随状语，表示同时发生的动作。

2.One day someone began to make a film about my village and its inhabitants, from whom I've stolen so many of the stories that I tell.

【参考译文】一次，有人要拍摄关于我们村子和村民的电影，就是从这些村民那里，我听到了自己讲过的很多故事。
【结构解析】"its"指的是“my village”。“ from whom I've stolen so many of the stories that I tell”是定语从句，修饰“ inhabitants”。

3.I had the feeling that my father was watching me over my shoulder.

【参考译文】我感到父亲的目光越过我的肩头。
【结构解析】这句话相当于"I feel that my father..."。