Answer: Both adverbs, further and farther have been used interchangeably. However, further can be used as a sentence modifier (such as "Further, the students were not interested in local politics.") and does not deal with distance.
Farther, on the other hand, is used as an indicator of distance. For example, "The house is farther down the road."
问题92：什么时候用further 比用farther 好？
回答：Further和farther都是副词，可以互相替换使用。但是，further可以用来修饰句子。 如：Further, the students were not interested in local politics.（而且，学生们对当地的政治不感兴趣。）此外，further和距离无关。
father用来表示有距离, 如: The house is farther down the road.(这个房子远离马路。)
92：什么时候用further 比用farther 好？
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