We make a distinction between the articles "a" and "an" based on the sound of the word that follows them. Why don't we do this with "the"? - http://www.quora.com/We-make...
Meryn Stol voted up this answer. Judith Meyer You do adjust the pronunciation, just not the spelling. In accurate English pronunciation, the "the" in "the book" is pronounced "thuh" and in "the apple" it's pronounced "thee". See question on Quora - Meryn Stol