They have all been put to shame by a boy who,while playing truant,travelled 1,600 miles.句子成分
问题描述：
They have all been put to shame by a boy who,while playing truant,travelled 1,600 miles.句子成分
答
a boy who travelled 1600 miles while playing truant
这样改一下你可能 就清楚了
定语从句who travelled 1600 miles while playing truant
travelled是从句中的谓语动词,这里本身就是主动的,
while playing truant = while (he was) playing truant能再详细点吗，我要对下答案，O(∩_∩)O谢谢