Plural Nouns（名词复数）
Regular Plurals
Nouns that can take an -s, -es or -ies ending if the number is more than one.
Example:
boy→ boys
dress→ dresses
butterfly→ butterflies
Irregular Plurals
Nouns that can change their vowels, remain unchanged or take an -en or -ren ending if the number is more then one.
Example:
goose→ geese（鸸）
deer→ deer（鹿）
ox→ oxen（牛）
child→ children（小孩）
Foreign Plurals
Some nouns are borrowed from other languages and commonly used in English.
There are two ways of pluralizing foreign words.
(i) By the addition of the regular -s plural.
(ii) By the addition of the foreign plural.
Example:
virus→ viruses（病毒）
stimulus→ stimuli（刺激）
cactus→ cacti/ cactuses（仙人掌）
Regular Plurals
Nouns that can take an -s, -es or -ies ending if the number is more than one.
Example:
boy→ boys
dress→ dresses
butterfly→ butterflies
Irregular Plurals
Nouns that can change their vowels, remain unchanged or take an -en or -ren ending if the number is more then one.
Example:
goose→ geese（鸸）
deer→ deer（鹿）
ox→ oxen（牛）
child→ children（小孩）
Foreign Plurals
Some nouns are borrowed from other languages and commonly used in English.
There are two ways of pluralizing foreign words.
(i) By the addition of the regular -s plural.
(ii) By the addition of the foreign plural.
Example:
virus→ viruses（病毒）
stimulus→ stimuli（刺激）
cactus→ cacti/ cactuses（仙人掌）
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