1. At the station, he was told by a smiling policeman that his bicycle had been found.
在警察局里，一位面带笑容的警察告诉他，他的自行车已经被找到了。
知识点1：a smiling policeman 一位面带笑容的警察
知识点2：that引导宾语从句。
2. Five days ago, the policeman told him, the bicycle was picked up in a small village fourhundred miles away.
那位警察对他说，那辆自行车是5天前在400英里外的一个小村里发现的。
知识点1：five days ago意为“5天前”，was picked up过去时的被动语态，时间状语与时态一致。
知识点2：in a small village four hundred miles away为地点状语。
3. It was stolen twenty years ago when Dan was a boy of fifteen!
它是20年前丹还是一个15岁的孩子时被人偷走的！
知识点1：本句中when引导时间状语从句。
知识点2：a boy of fifteen是一个典型的年龄表达法。
4. In the letter he was asked to call at the station.
在信中他被要求到警察局去一趟。
知识点：in the letter 在信中
in the covering letter 在说明函中
to the letter 严格按照字句，精确地
by letter 以书信形式
letter of application 申请书
letter of appointment 委任书
5. He was amused too, because he never expected the bicycle to be found.
他又感到非常好笑，因为他从未指望那辆自行车还能被找到。
知识点：expect sth. to be done意为“期待着某事情被完成”。原句中the bicycle是expected的宾语，不定式to be found是宾语补足语。
