Map of rules for indefinite articles of the a and an

1. Item 3

2. AN Y A

2.1. An elephant

3. Examples of a

3.1. a dog

3.2. a cat

3.3. a bird

4. Is applied when the next word begins with a vowel.

4.1. Topic 1

5. Is used when in the sentence the word begins with a consonant.

5.1. A

6. AN

6.1. an apple

6.2. an elephant