ARTICLES a/an

1. E.g

2. Use “a”, “and” only with singular nouns

3. According to the Oxford Dictionaries it is a determiner that introduces a noun phrase. a|an are considered indefinite articles and they are used to introduce new concepts into a discourse.

4. It's a pencil

5. It's a truck

6. This is a house

7. That is a watch

8. Use “an” with words that start with a vowel sound

9. E.g

10. This is an english book

11. It's an orange

12. He is an actor

13. It's an alligator