Questions & Answers about Bu maddeyi sonra konuşalım.
Because madde is the definite direct object of the verb, so it takes the accusative ending.
- base noun: madde
- accusative form: maddeyi
The -y- is a buffer consonant. Turkish often inserts y between two vowels, since madde ends in a vowel and the accusative ending also begins with a vowel.
So:
- madde = item / clause / point
- maddeyi = the item / this specific item, as the object of the verb
This is similar to how English distinguishes between a general thing and a specific thing, except Turkish marks that with a suffix.
Here -yi is the accusative case ending, marking a specific, definite object.
In this sentence, the speaker is not talking about just any item, but that particular item already known in the conversation.
A useful contrast:
- Bir madde konuşalım = Let’s discuss an item
- Bu maddeyi konuşalım = Let’s discuss this item
So the ending helps show that the noun is specific.