Question

20．当我到书店的时候，这本书已经卖光了．（sellout）
The book had been sold out when I got to the bookstore．．

Answer 1

分析 当我到书店的时候，这本书已经卖光了．

解答 答案：The book had been sold out when I got to the bookstore．考查sell out的用法．
句子里 谓语动词had been sold out 是过去完成时态的被动，表示"已经卖光了"．

点评 考查汉译英．
 过去完成时：
1．概念：以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即"过去的过去"．
2．时间状语：before，by the end of last year（term，month…），etc．
3．基本结构：had+done．
4．否定形式：had+not+done．
5．一般疑问句：had放于句首．
6．例句：As soon as we got to the station，the train had left．
By the end of last month．We had reviewed four books