1She found the key that she had lost. 她丢失的钥匙找到了。 2.He said that he had known her well. 他说他很熟悉她。3.I returned the book that I had borrowed. 我已归还了我借的书。4.Mr. Smith died yesterday. He had been a good friend of mine. 史密斯先生昨天去世了。他以前是我的好友。5. She didn’t go to bed until she had finished he work. 她直到把工作做完之后才睡觉。
