The articles

1. A,AN,THE.
2. A and AN are indefinite articles.
3. The is the definite article.
4. I saw a boy.
5. Did you meet a bad boy or a good boy?
6. Did you meet a tall boy or a short boy?
7. Did you meet a fat boy or a lean boy?
8. This is not clear.
9. So "A" is an indefinite article.
10. She ate AN apple.
11. Which apple did she eat?
12. The Australian one or the Kashmiri one?
13. We do not know.
14. Did she eat the apple which was yellow or which was red?
15. We do not know.
16. So" AN' is also an indefinite article.
17. The apple which she ate was THE red one.
18. Now you definitely say The apple ,the Red apple.
19. You now know that she ate the THE red apple.
20. You are specific and you can definitely say that
21. she ate the red apple.
22. So THE is the definite article