3. We use "AN" when the word that precedes it begins with a vowel or by "H" is not uttered
4. We use "A" when the word that precedes it begins with a consonant or by u, when pronounced / "JU" /
5. It is invariable in gender and number ie we will use the same form for both men and for women. Uses of articles A / AN: > Is used to designate to people and things. > Is used to and in front of an professions. > Lacks plural, to express the plural is used "some".
