Breakdown of Yeni ilacın hastalara iyi geldiği henüz kanıtlanmadı.
yeni
new
ilaç
medicine
henüz
yet / still
iyi gelmek
to do (one) good
Questions & Answers about Yeni ilacın hastalara iyi geldiği henüz kanıtlanmadı.
Why does yeni ilaç take the genitive ending (-ın) here? Isn't it the subject of the sentence?
The entire phrase yeni ilacın hastalara iyi geldiği is the subject of the main verb (kanıtlanmadı). Inside this factive clause, Turkish treats the action like a noun phrase: literally, 'the new medicine's coming-good to patients'. Because of this, the clause's internal subject (yeni ilaç) takes the genitive (ilacın), and the verb takes a possessive suffix (geldiği).
Why is there no case marker on geldiği? Usually, these -dık clauses have an ending like -ni or -ne.
Because this entire clause is the subject of the main verb. Subjects in Turkish take the nominative case, which means no extra case ending is added after the possessive suffix on geldiği. If it were the direct object, such as in 'I know that it is good', it would need the accusative case and become geldiğini.
Literally, what does iyi geldiği mean? I know gelmek means 'to come'.
The phrase iyi gelmek literally means 'to come good', but it is the standard Turkish idiom for something having a beneficial, healthy, or soothing effect. You use it with the dative case for the person benefiting, which is why we see hastalara (to the patients) here.
How do we get 'hasn't been proven' from kanıtlanmadı?