Learn Turkish: Tren, sarp mı sarp yamaçlarda ilerliyor. - The train is advancing on very steep slopes.

This is a special structure used to strongly emphasize an adjective. By repeating the adjective with the question particle in the middle (Adjective + mı/mi/mu/mü + Adjective), it translates to 'very [adjective]' or '[adjective] as can be.' Here, sarp mı sarp means 'extremely steep.'

Could I use çok sarp instead of sarp mı sarp here?

Yes, çok sarp also means 'very steep' and is perfectly correct grammatically. However, sarp mı sarp adds a lot more flavor and emotion, making the storytelling more vivid and expressive, much like saying 'steep, oh so steep' in English.

What is the difference between sarp and dik for 'steep'?

While dik just means 'steep' or 'vertical' (like a steep staircase or a vertical line), sarp carries the extra meaning of being rugged, craggy, and hard to cross. It is specifically used for challenging geographical features like mountains, cliffs, and slopes (yamaçlar).

What is the root of the verb ilerliyor, and why did its spelling change?