帮了他一个大忙 meaning in Chinese

do him a good kindness

Albert let himself be pressed just as long as friendship required , and then avowed to franz that he would do him a great favor by allowing him to occupy the carriage alone the next day . albert attributed to franz s absence the extreme kindness of the fair peasant in raising her mask . franz was not sufficiently egotistical to stop albert in the middle of an adventure that promised to prove so agreeable to his curiosity and so flattering to his vanity
阿尔贝再三推托，一直推托到在朋友交情上已经说得过去的时候，他才向弗兰兹直说，要是明天肯让他独用那辆马车，那就可算帮了他一个大忙，阿尔贝认为那个美丽的农家女肯抬一抬她的面具，应当归功于弗兰兹的不在，弗兰兹当然不会自私到竟在一件奇遇的中途去妨碍阿尔贝，而且这次奇遇看来一定能够满足的好奇心和鼓起他的自信心。