云课堂小编为大家分享关于高考志愿、大学报名入口、成绩查询、志愿填报、高考复习等相关文章，希望能帮助到您！
had后面的动词的形式had后面用动词过去分词形式，即had done。
had done是过去完成时。表示动作发生在过去的过去。通常句中有过去时间状语作参照。
例句：I had finished my homework before my father came back.
在我父亲回来之前，我已经完成了家庭作业。
had done句型的例句They had never seen so many of the locusts before.
（他们以前从未见过如此多的蝗虫）
I had reached the station before six o'clock.
（六点之前我已到达车站。）
Fortunately, the population had left the village before the volcano erupted.
（幸运的是，火山喷发前人们已离开了村庄。）
WWW..e-laoshi.com云课堂专注教育信息，涵盖范文,研究生,考研,本科大学,MBA,高考,成人自考,艺考,中专,技校,职业学校,高职,卫校录取分数,成绩查询,招生简章等信息