Learn Turkish: Mühendis beton ve demir getirebilir. - The engineer can bring concrete and iron.

The root verb is getirmek (to bring). To say someone "can" do something, we add the ability suffix -ebil or -abil. Because the last vowel in getir is i, front vowel harmony dictates that we use -ebil. Then, we add the Aorist tense suffix -ir to complete the verb for the "he/she/it" subject.

Why does getirebilir end with the Aorist tense -ir instead of a different tense like present continuous?

In Turkish, when expressing a general capability or possibility ("can"), the ability suffix is almost always paired with the Aorist tense. While you might occasionally see getirebiliyor (present continuous), using the Aorist (getirebilir) is the standard, natural way to state that the engineer has the ability or authorization to bring these materials.

Why didn't we use a buffer -y- before the ability suffix, like we do in okuyabilir?

The buffer letter -y- in the -(y)abil suffix is only used when the verb root ends in a vowel (like oku -> okuyabilir). Because the root getir- ends in a consonant (r), the suffix attaches directly without a buffer, resulting in getirebilir.

Why don't beton (concrete) and demir (iron) take the accusative case suffix (like )?