My sister is more thin than me.
Im more busy this week than the last week
Cambrige is more far from London than Oxford
The comparative of far may be further or farther.
Far has got two comparative forms: farther or further. As you can see far is an irregular adjective.
far and far and far
farther
farther
farther
Farther is the comparative of far, and the superlative is farthest.
Both farther and further are comparative forms of far. Farther is only used of distance; further can be used in any context.
farther, farthest
farther or further
The comparative form is farther or further. The superlative is the farthest or thefurthest.
Further is an adverb.More completely, it is the comparative of the adverb far. Examples:Did you walk far? [far is an adverb]We walked further than ever before. [further (or farther) is the comparative of far]