This question already has an answer here:
I was watching TV series "Prison Break" and in the first episode I came across this kind of strange to me sentence.
HALE: We're all clear on the Burrows execution.
HALE: Except for one thing. Bishop McMorrow is not in the fold.
HALE: He's got a lot of influence with the Governor. They went to prep school together apparently.
HALE: Look, the closer it gets, the more I'm worried that the bottom is gonna fall out of this whole thing.
KELLERMAN: Well, maybe it's time we arranged a visit with the good bishop then.
KELLERMAN: Look, in one month it'll all be over.
I don't get why there has been used a definite article. I learned that articles always come before nouns. In this situation "more" doesn't seem to be a noun, I would say it's an adverb. Maybe I'm missing something, any suggestions ?