五分之四的英文：four fifths。读音：英[f(r) ffθs]，美[fr ffθs]。分数中，分子用基数词表示，分母用序数词表示，如果分子大于1，作分母的序数词用复数形式表示。

双语例句
1、It can save energy consumption by four fifths.
它可以节省五分之四的能源消耗。
2、The service had seen almost 100 passengers, four fifths of whom were female.
该活动已接待了近百位乘客，其中五分之四是女性。
3、I have finished four fifths of the work.
这项工作我已经完成了五分之四。
4、The manager entered the office and was happy to learn that four fifths of the tickets had been booked.
经理走进办公室，得知有五分之四的票被预定了，他非常高兴。
5、Paris is a city of gaiety and pleasure where four fifths of the inhabitant die of grief.
巴黎，是个有五分之四的居民死于悲伤的快乐城。