Here's why:
* Determiners are words that come before nouns to specify which noun is being referred to.
* Articles are a specific type of determiner. They indicate whether a noun is singular or plural, and whether it's definite (specific) or indefinite (unspecific).
Here's a breakdown:
* "a" and "an" are indefinite articles. They indicate that the noun is singular and unspecified.
* Example: "a dog" (any dog)
* "the" is a definite article. It indicates that the noun is specific and known to both the speaker and listener.
* Example: "the dog" (a specific dog, already mentioned or understood)