(used, especially before a noun, witha specifying or particularizing effect, as opposed tothe indefinite or generalizing force ofthe indefinite article aoran):the book you gave me; Come into the house.
(used to mark a proper noun, natural phenomenon, ship, building, time, point ofthe compass, branch of endeavor, or field of study as something well-known or unique):the sun; the Alps; theQueen Elizabeth;the past; the West.
>used before nouns to refer to particular things or people thathave already been talked about or are already known orthat are ina situation where itis clear what is happening: I just bought a new shirt and some new shoes. The shirt was pretty expensive, but the shoes weren’;t.
Please would you pass the salt. I’;ll pick you up at the airport.
>used before some nouns that refer to place when you want to mention that type of place, without showing exactly which example ofthe place you mean: