一个英语句子thay had all been put to shame by a boy who,while play
6个回答

整个句子为过去完成时的被动语态.主语为They,谓语部分为had been put to shame ,by后面的部分为状语.who是定语从句的引导词,补充说明先行词a boy.稍微调整一下,这样容易看些：They had all been put to shame by a boy who (while playing truant) travelled 1600 miles.括号内为插入语,不充当句子成分,去掉后句子仍然通顺.They had all been put to shame by a boy who travelled 1600 miles.

while playing truant是插入语,不补充说明作用,不充当句子成分.

改写成 while he played truant 是错误的,while引导进行时,表示动作当时正在发生.

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