摘要：用法: ①.表示过去某时间或动作以前己经完成的动作或己存在的状态, 即“过去的过去 a. When all his money had gone, Marx had to leave his house in London. b. Marx had learned some English before he got to England. c. He said he had never been to Shanghai. d. By the middle of last month I had lived in Beijing for five years. ②.在带有after / before引导的时间状语的句子中, 由于after / before本身的词义己经表明了时间的先后, 所以这类句子中常用一般过去时代替过去完成时 a. We left the house before it began to rain. b. I didn’t wait long before he came. c. After we finished the tea, we all sat on the grass. d. After he arrived in England, Marx worked hard to improve his English.

网址：http://m.1010jiajiao.com/timu_id_4420989[举报]