474 more than a和more than one
① more than a中的a指的是“一个,任何一个”,表示的是类别。
He will stay here for more than a mouth. 他将在这里待一个多月。(超过30天)
② more than one中的one强调数量是“一个”,而不是“两个,三个,四个”。
比较
It took her more than an hour to get there. 到达那里花了她一个多小时。(一个小时多一点)
It took her more than one hour to get there. 到达那里花了她不止一个小时。(可能两个小时,三个小时)
He has a sister who studies in Fudan University. 他有一个妹妹在复旦大学学习。(可能有几个妹妹)
He has one sister who studies in Fudan University.(表示只有一个妹妹)