furthest:
adv. 最远地最大程度地,最先进的(同 farthest)
adj. 最远的最大程度的(同 farthest)
The risk of thunder is greatest in those areas furthest from the coast.
遭雷击的危险在离海岸最远的那些地区最大。
The south, where prices have fallen furthest, will remain the weakest market.
价格降幅最大的南方仍将是最疲软的市场。
fathest:Tom's home is the fathest from school in his class, so he goes to school by bus. It takes him half an hour.
汤姆的家离他的学校世界上最遥远,所以他乘公共汽车上学花费他半个小时。
furthest和fathest的区别
farthest和furthest这两个单词都可以表示“最远的”的意思,这两个单词之间的区别是:
1、farthest:作为far的最高级形式,指最大的距离
2、furthest:与farthest相比,除指数量或程度上的最多或最大。
例句:
Start with the person farthest from you. 那么就从离你最远的那个人开始。
They had a competition to see who could throw the furthest. 
他们举行了一场比赛,看谁投得最远