a long while ago

• 很久以前； 从前

a long while ago的用法和样例：

例句

1. The lake was ponded by lavas a long time ago.
   这条湖是很久以前熔岩堵塞河道形成的。
2. She said she had seen the film long before.
   她说她很久以前就看过这部电影。
3. In former days there was a racecourse here.
   从前这儿有个赛马场。
4. In the old days,many families led a dog's life.
   从前，许多家庭过着牛马不如的生活。