How does the author use foreshadowing in Eugene Onegin?

The early parallels which Pushkin draws between Onegin and Lord Byron's prototypical Byronic hero, Childe Harold, foreshadow the violent action that Onegin will undertake and Tatyana's discovery, while looking through Onegin's study, that he is nothing more than a parody of a person. Most clearly, Onegin kills Lensky in Tatyana's dream.