Undefined articles

1. Use “an” with words that start with a vowel sound singulares

1.1. ¨An ¨ is normally used before a noun that starts with a vowel, like to, a, e, i

1.1.1. an apple

1.1.2. an elephant

1.1.3. an ear

1.1.4. an idea

1.2. When the vowel u is pronounced as uh, it's considered a vowel.

1.2.1. an umpire

1.2.2. an uncle

1.2.3. an unhappy boy

1.3. Before a word that begins with a silent h, as in the words in the table, "a" is used.

1.3.1. an hour

1.3.2. an honor

2. Use “a”, “and” only with singular nouns

2.1. ¨A¨ is usually used before a noun that starts with a consonant, such as b,c,s, and t.

2.1.1. a boy

2.1.2. a cat

2.1.3. a dog

2.1.4. a snake

2.1.5. a turtle

2.2. Before a word that starts with an h that produces a raspy sound, it is used ¨a¨

2.2.1. a horse

2.2.2. a home

2.2.3. a hole

2.2.4. a hat

2.3. When the vowel u or the eu combination, for example, are pronounced as ¨you¨ they are considered a vocal.

2.3.1. a unicorn

2.3.2. a uniform

2.3.3. a unit

2.3.4. a university

2.3.5. a euro