这个题看了好几遍才搞清楚在说什么,我试着翻译一下,虽说很蹩脚,但是可能有帮助。 大意是说:第一天在R购买了替代品的顾客的总花费大概占第一天所有顾客购买X产品的总花费的多大比例,如果每个第一天的顾客都能买到x的话。 我觉得这个题理解的难点在于“ the total all Day 1 shoppers would have paid had each of them been able to purchase product X on Day 1" 这个句子是虚拟语气省略if的倒装,正过来的话是: the total all Day 1 shoppers would have paid, if each of them had been able to purchase product X on Day 1. 在表示过去情况的虚拟条件句中,正常语序下,条件句的谓语是had +过去分词,主句的谓语是would have+ 过去分词。 -- by 会员 cici陈0627 (2012/7/15 10:22:22)
嗯哼~ 没注意到是had +过分的倒装,茅塞顿开啊~ |