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Plurals复数转换规则汇总

As a general rule, the plural is formed by adding "-s" to the singular form of nouns. 最常见的是在单数形式后面直接加 "-s" (来源:英语交友 http://friends.englishcn.com)

  • shoe –> shoes
  • book –> books
  • river –> rivers

Nouns ending in "s" or "s" will generally take the ending "-es"  : 以"s"结尾的通常加"-es"

  • bus –> buses
  • kiss –> kisses

Words ending in "y" will generally take the ending "-ies" in place of the "y": 以"y"结尾的通常转换为"-ies"

  • party –> parties
  • supply –> supplies

Certain words have very irregular forms in the plural: 下面是精选的不规则复数形式,需要记住。

  • one man –> two men
  • one woman –> two women
  • one person –> two people
  • one foot –> two feet
  • one mouse –> two mice
  • one goose –> two geese
  • one tooth –> two teeth
  • one wife –> two wives
  • one child –> two children
  • one knife –> two knives
  • one thief –> two thieves
  • one dwarf –> two dwarves (ou: dwarfs)
  • one potato –> two potatoes
  • one leaf –> two leaves
  • one life –> two lives
  • one loaf –> two loaves
  • one half –> two halves

A small set of words do not change form in the plural:下列词单复数同形

  • one moose –> two moose
  • one sheep –> two sheep
  • one aircraft –> two aircraft

Words of Greek or Latin origin which have retained their original endings will generally take the plural form associated with the language they are drawn from: 来源于希腊语或者拉丁语的单词复数形式比较特殊,很容易拼错,请记住下面这些单词

  • one alumnus –> two alumni
  • one syllabus –> two syllabi
  • one alumna –> two alumnae
  • one alga –> many algae
  • one criterion –> many criteria
  • one forum –> many fora (or: forums)
  • one thesis –> two theses
  • one hypothesis –> two hypotheses
  • one phenomenon –> two phenomena
  • one cactus –> two cacti (or: cactuses)
  • one diagnosis –> two diagnoses
  • one oasis –> two oases
  • one analysis –> two analyses

A few nouns are invariable or collective, always indicating a plural meaning下列名词属于集合名词只有复数含义:

  • She gave me some information.
  • Michelle has a lot of clothes.
 
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