Rule: Articles are words that define a noun as specific or unspecific. Use "the" before a specific noun that is already known or has been previously mentioned. Use "a" or "an" before a nonspecific noun that is not known or mentioned before.
Rule: Articles are words that define a noun as specific or unspecific. Use "the" before a specific noun that is already known or has been previously mentioned. Use "a" or "an" before a nonspecific noun that is not known or mentioned before.