This is the 176th most frequent Hungarian word.
sokat
"Much" or "a lot."
In this sentence, 'sokat' is used as an adverb modifying the verb 'studied', indicating the extent of the action.
Sokat tanult a vizsgára.
She studied a lot for the exam.
Here, 'sokat' again serves as an adverb that quantifies the amount of sleep, emphasizing the high amount.
Tegnap sokat aludtam.
I slept a lot yesterday.
In this usage, 'sokat' highlights the frequency of the action 'to think' about the subject addressed as 'rád' (you).