The is actually use when you refer to a SPECIFIC thing or object.. like "I want to eat THE apple she gave me".-- This sentence refers to THE APPLE "she " gave.
Thank you, Hazel. Escuban: Walmart has become so well-known and is growing so fast that we have several in our city. We refer to them individually as "the airport Walmart" or "the Walmart near the Olympic Pool." However, we would not say, "I'm going to the Walmart." It would be, "I am going to Walmart."