2/3 of the kids in my class were boys.
2/3 of the pizza was eaten by the time I came to the party.
2/3 of the people thought that the class was boring.
*Updating*
2/3 means 2 people out of 3 didn't come to school because of the flu.
Like this ^ ?
It is most likely found at the conclusion of the essay. He/she had already provided the examples that illustrate his/her arguments, and is now wrapping it up. Conclusion, however, shouldn't just be a rehash of the ideas that were already said. It should contain some substance instead of just saying: "as I've already said..."
I'm not exactly sure, but I think this statement is true, although the antagonist can sometimes be a rival to the protagonist without knowing. It really depends.
Jonathan Harker is a London man with soft sensibilities and conducts his life in a business-as-usual manner. However, his nature is tested when, working as a solicitor, he comes in contact with Count Dracula. The vampire imprisons him and plans on feeding him to his brides when he no longer has use of his services.