Learn Turkish: Sütü içecek kadar susadın mı? - Are you thirsty enough to drink the milk?

This sentence uses the pattern verb + -(y)AcAk kadar, which shows the degree or limit of something. It literally means "to the extent that one will [verb]". In English, this is usually expressed as "enough to [verb]". Here, iç (drink) takes the -ecek suffix and combines with kadar to mean "enough to drink".

Why is süt in the accusative case (sütü) if the main verb is susamak (to be thirsty)?

Sütü is the direct object of the verb it belongs to in the clause, which is içecek (drink), not the main verb susadın. Because the sentence is about a specific milk ("the milk"), it takes the accusative case ending -ü before the verb "drink".

Does the -ecek in içecek mean the drinking will definitely happen in the future?

Not necessarily. In the -(y)AcAk kadar structure, the -(y)AcAk suffix doesn't act as a strict future tense marker. Instead, it forms a participle that shows potential or capacity. You are asking if their thirst has reached the potential level of drinking the milk, regardless of whether they actually drink it or not.

The English translation says "Are you thirsty" (present tense), but susadın has the past tense suffix -dı. Why?