"Os olhos daquela pessoa são grandes."

Translation: That person's eyes are big.

[Emident]

the eyes of thet person are big
it is alo correct

[JCMcGee]

Its not how we day it in English. We say "that person has big eyes"

[Gyozo_Cserhalmy]

Vovó, porque esses olhos tão grandes?
- É pra te ver melhor! :-)