“ An interesting map”
Use "a" before all the words that start with a consonant sound. In English, almost all words with a consonant will be preceded by article "a".
Example
Example
Use "an" before all the words that start with vowel sounds. In English, almost all words that begin with vowels will be preceded by article "an".
Articles a/an
a dog
a cat
a bus
a book
an apple
an egg
an alligator