@theetachemist1234: Part 159| Indefinite articles are the words “a” and “an.” We use them before a singular, countable noun when we talk about something non-specific. Rules Use a before a word that begins with a consonant sound: a book a car a university Use an before a word that begins with a vowel sound: an apple an hour (silent “h”) an enginee r#ukdesi #writinghelp #foryoupage #articles #phonics