✔ 最佳答案
hi.
"a" is used before noun, and it is only of singular uses, to talk about ONE, specific thing.
e.g. a pen, a bag, a rubber (one pen, one bag, one rubber)
*"a" is NEVER used for plural objects. it is only used before singular consanents.
Similar to "a", "an" is also used for singular objects. but be beaware, "an" can only be used with vowels (a, e, i, o, u).
"the" is used when a writer wants to point to a specific, special thing. For example, the Sun, the Earth. We all know there is only ONE sun, ONE earth, so the word "the" is used. have you ever heard people saying "I see a sun?" >_< ~ =)
In conclusion:
"a" is used to point out singular consanants (alphabets other than a, e, i, o, u)
"an" is used to point out singular vowels
"the" is used to point out specific, special noun; fact that everyone know. that noun after "the" if usually capitalized.
hope I can help ya =)