Why do we use the, 'a' article sometimes, before words starting with vowels (a, e, I, o, u) and why do we use the, 'an' article sometimes, before words starting with consonant letters?
Why do we use the, 'a' article sometimes, before words starting with vowels (a, e, I, o, u) and why do we use the, 'an' article sometimes, before words starting with consonant letters?