用做far的比较级。一种说法是forth的比较级，-er, 比较级后缀。另一种说法是far的比较级，-ther, 比较级后缀，词源同other, interior. 与further的词义区别主要来自人为的影响。

1. Both of my sisters moved even farther away from home.

我的两个姐姐都搬得离家更远了。

2. I can't see any farther than the next six months.

6个月以后的事情我就无法预见了。

3. She set her glass down and slid farther under the covers.

她放下杯子，钻进被子里。

4. Staff who have to travel farther can claim excess travel expenses.

需要到更远的地方出差的职员可以领取额外差旅费。

5. farther along the road

沿路继续往前