Generally speaking, the definite article "the" specifies a particular individual in a particular context. Such is the case in sentences like this, where "the case" is a specific thing that you, the reader, can determine that I am referring to in this moment.
On the other hand, Healthcare Services Video indefinite articles like "a" and "an" indicate that the following noun is not able to be identified specifically by the writer or speaker. Such would be the case if I were to say "a reader of this article" instead of referencing "you, the reader." The indefinite article "a" is always used before a consonant sound while "an" is always used before a vowel sound.
The word "some" can be used in cases where the noun in question is definite, but the quantity in question is not which essentially means that the word "some" is interpreted as an article in particular contexts, though it is typically considered part of the larger category of quantitative determiners in general.. Celebrity FAQs