In speech and writing a is used before a consonant sound.
Before a vowel sound an is usual
but especially in speech a is used occasionally, more often in some dialects than in others.
Before a consonant sound represented by a vowel letter a is usual
but an also occurs though less frequently now than formerly.
Before unstressed or weakly stressed syllables with initial h both a and an are used in writing.
In the King James Version of the Old Testament and occasionally in writing and speech an is used before h in a stressed syllable.
a4 of 13
a-7 of 13
a-8 of 13