The document provides rules for using "a" and "an" in English. It explains that "a" is used before words starting with consonant sounds, while "an" is used before words starting with vowel sounds. Examples are given such as "a tree" and "an apple". It emphasizes that the rules depend on pronunciation and how words sound rather than how they are spelled.

2. A AN
DEFINITION
It is for consonant
sounds.
It is for vowel sounds.
EXAMPLES
- a tree
- a university
- a house
- a school
- an apple
- an umbrella
- an hour
- an escape
Important: You have to listen the words very
carefully because the use of A and AN depends on
the sound words.
Singular nouns.

3. ˌjuːnɪˈvɜːsɪti
wʌn
ˌjʊərəˈpi(ː)ən

4. RULE EXAMPLES
Regular nouns add
–S
arm – arms
dog – dogs
Ends in S, CH, SH, X,
add -ES
address – addresses
match – matches
dish – dishes
box – boxes
prefix – prefixes
Ends in vowel + Y
add –S
toy – toys
monkey – monkeys
Ends in consonant
+ Y, remove Y add
–IES
city – cities
party – parties
Ends in vowel + O add –S
radio – radios
zoo – zoos
Ends in consonant + O add –
ES
tomato –
tomatoes
hero – heroes
Ends in F or FE, remove F or FE
and add –VES
wife – wives
wolf – wolves
Irregular nouns
person – people
woman – women
child – children
foot – feet
tooth – teeth
ox – oxen
No change
sheep – sheep
fish – fish
deer – deer