This is the 16719th most frequent Turkish word.
yürüdüğünü
"Yürüdüğünü" means "that (he/she/it) is walking" or "that (he/she/it) walked."
In this sentence, 'yürüdüğünü' functions as the object of the verb 'görüyorum' (I see), indicating an ongoing action observed by the subject.
Onun her sabah okul yolunda yürüdüğünü görüyorum.
I see her walking on the way to school every morning.
Here, 'yürüdüğünü' acts as the object of the verb 'söylemiştim' (I had told), expressing the information conveyed in the past.
Sana onun yürüdüğünü söylemiştim.
I had told you that he walks.
In this example, 'yürüdüğünü' serves as the object of the verb 'biliyorum' (I know), referring to the knowledge of an ongoing event.