Count nouns have two forms: singular and plural.
Singular count nouns refer to one person or thing:
|a teacher||a book||a wish||an idea|
Plural count nouns refer to more than one person or thing:
Singular count nouns
Singular count nouns cannot be used alone. They must have a determiner:
|the English teacher||that book||a wish||my latest idea|
Plural count nouns
We usually add –s to make a plural noun:
We add –es to nouns ending in –s, –ch, –sh, –ss, –x and –o:
When a noun ends in a consonant and –y, we make the plural with –ies:
If a noun ends in a vowel and –y, we simply add –s:
Some common nouns have irregular plurals:
Plural count nouns do not have a general determiner when they refer to people or things in general:
Computers are very expensive.
Do you sell old books?
But they may have a specific determiner:
Those computers are very expensive.
The books in that shop are very expensive.
Her sisters live there.
or a quantifier:
|some new books||a few teachers||lots of good ideas|
or a numeral:
|two new books||three wishes|