What passage are we talking about?
I need more information:(((
Explanation:
"I thought I knew the whole story." indicates that there is more than what the person thought. which means that they probably going to tell you what really happened at some point. saying that foreshadows upcoming events because whenever you read something that says that, you are told the story and told what really happens (I am so. sorry if this doesn't make sense. I have trouble with words but I try my best)
The phrase helps to conclude the text and does not add to the writing. ... The phrase adds a specific detail about time that is relevant to the text's topic. The phrase helps to introduce the text's topic by providing a direct object.