Step 2.

1. An . An is an indefinite article.
2. Tt can mean anyone or anything ,nothing specific.
3. I saw an elephant.
4. Which elephant, the black one, the grey one or the white one, the big one, the large one, the small one.
5. Nothing specific.
6. The elephant has four legs. It has two tusks, It has two large ears.
7. What does the elephant have? four legs,two tusks and two large ears.
8. The elephant speaks about that particular elephant.
9. The elephant is a vegetarian. It eats grass ,leaves and fruits.
10. What does the elephant eat? grass, leaves and fruits.
11. Where can you find  the elephants? in the forests, in the zoos and in the Hindu temples.
12. http://elephant.elehost.com/About_Elephants/about_elephants.htm