基本结构
过去完成时的句子结构一般为:
主语+had+过去分词(done)+其他成分
如:
After I had read it I was filled with horror.(我读完它之後,心里充满了恐怖。)
By the age of 10 he had learned to play the piano for five years.(他在10岁的时候,已经学了五年的钢琴。)
标志性词语
过去完成时常见的标志性时间状语主要有:
1、by the end of+过去时间
By the end of last year, we had solved more than 100 problems.(到去年年底,我们已经解决了100多个问题。)
2、by the time+从句(动作发生在过去)
By the time she left the city, she had used up all her savings.(到她离开这个城市的时候,她的存款已全部用完。)
3、by (the time of)+过去时间
He had taught maths for four years by last July.(到上个七月为止,他已经教了四年数学了。)
4、before+过去时间
He had never ridden a horse before last month.(到上个月以前他从来没有骑过马。)