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As a general rule, the plural is formed by adding "-s" to the singular form of nouns. 最常見的是在單數形式后面直接加 "-s" (來源:
英語交友 )
shoe –> shoes
book –> books
river –> rivers
Nouns ending in "s" or "s" will generally take the ending "-es" : 以"s"結尾的通常加"-es"
bus –> buses
kiss –> kisses
Words ending in "y" will generally take the ending "-ies" in place of the "y": 以"y"結尾的通常轉換為"-ies"
party –> parties
supply –> supplies
Certain words have very irregular forms in the plural: 下面是精選的不規則復數形式,需要記住。
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:下列詞單復數同形
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: 來源于希臘語或者拉丁語的單詞復數形式比較特殊,很容易拼錯,請記住下面這些單詞
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下列名詞屬于集合名詞只有復數含義: