过去完成时的结构是什么
过去完成时的结构是:1、肯定句:主语+had+done+others。2、否定句:主语+had+not+done+others。3、疑问句:had+主语+done+others。4、肯定回答:YES,主语+had/否定回答:NO,主语+ hadn’t。过去完成时注意:在含有定语从句的主从复合句中,如果叙述的是过去的事,先发生的动作常用过去完成时。过去完成时常常用在told,said,knew,heard,thought等动词后的宾语从句(或间接引语)中,这时从句中的动作发生在主句表示的过去的动作之前。
过去完成时的结构
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。)