[译] 如果你需要更详细的资料，我建议你去图书馆查阅。
[误] If you need farther information, I suggest you go to the library.

[正] If you need further information, I suggest you go to the library.
[注] 谈及实际的地点或距离时，既可以用 farther, farthest, 也可以用 further, furthest。在其他情况下，尤其表示"more"、"extra"、"additional"时，通常用 further, furthest, 如：a college of further education/ For further information write to the above address。