There was story after story of how Lin Qiaozhi, tired after a day's work, went late at night to deliver a baby for a poor family who could not pay her. 这是高中英语必修四中的一句话, 请问这句话中tired after a day's work, went late at night to deliver a baby for a poor family who could not pay her作句子的什么成分,整句话的结构是怎么样的? 谢谢! story after story 是什么词性 ?