Learn Turkish: Ağır dolabı sürükleye sürükleye odaya taşıdık. - We moved the heavy cabinet to the room by dragging it.

The root of the verb is sürükle- (from sürüklemek, meaning to drag). Because the root ends in a vowel, we add the buffer letter -y- before adding the -e ending. Repeating it as sürükleye sürükleye describes the ongoing, continuous manner in which the cabinet was moved.

Why does the word dolap change to dolabı in this sentence?

This happens due to consonant mutation. When you add a vowel suffix to a word ending in p, ç, t, or k, that consonant usually softens. Here, we add the accusative suffix -ı to dolap, so the hard p changes to a soft b.

Why do we need that accusative suffix on dolabı?

The cabinet is the direct object of the verb taşıdık (we moved). Because we are talking about a specific, known cabinet (the heavy cabinet), it requires the accusative case marker -ı. If it were an unspecified cabinet (a heavy cabinet), it would just be ağır bir dolap.

Could I change the word order to put sürükleye sürükleye right before the verb?