为什么这句话用过去时had earned ?

母语人士的回答
Rebecca
这句话过去是完美的。这是表达过去发生的事情并对其进行详细讨论的常用方式。例子: If I had woken up earlier today, I would not have been late for school. (如果我很早醒来,我上学就不会迟到。)示例: The old hotel was abandoned now. It had once been famous for serving celebrities and politicians, but now only spiders and mice could be seen wandering across its halls. (这家旧酒店现已废弃。曾经以名人和政客而闻名,现在只能看到蜘蛛和老鼠在走廊上漫游。)