Countable nouns have singular and plural forms. When referring to people or things, use the singular form; Use the plural when referring to two or more people or things. Nouns ending in "consonant +y" should be changed from y to I plus es. Such as: city → city. Body → Body Story → Story. Factory → Factory.

Countable nouns refer to people or things that can be counted by numbers and divided into individuals; So it has a plural form, and when its plural form is used as the subject in a sentence, the predicate of the sentence also uses the plural form. Nouns can be divided into countable nouns and uncountable nouns according to their countability. Countable nouns refer to nouns that can be divided into individuals and directly counted by numbers, such as desks, kites, girls, rooms, schools, etc. Nouns can be abbreviated to [N]. Countable nouns can be abbreviated as cn and uncountable nouns can be abbreviated as un.