英文名詞的複數形

資料來源：http://skylier.pixnet.net/blog/post/23313515-%E5%90%8D%E8%A9%9E%E7%9A%84%E8%A4%87%E6%95%B8%E5%BD%A2

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1.結尾-ss, -sh, -ch, -x加es
2.結尾 子音-y, 去y加ies,除了proper noun直接加s
3.結尾 母音+y , 直接加s
Ex: turkeys, highways, holidays, alloys, trolleys, boys, plays, attorneys, chimneys, rays.
4.結尾f or fe直接加s
Ex: fiefs, handkerchiefs, roofs, reefs, believes, tiffs, bluffs, skiffs, whiffs, cliffs

但有些字, f?v, 加 s or es
Ex: life---lives
Half—halves
Wolf—wolves
Shelf—shelves
Wife—wives
Knife—knives
Self—selves
Loaf—loaves
Leaf—leaves
Sheaf—sheaves

5.不規則形
Child—children
Foot—feet
Goose—geese
Louse—lice
Man—men
Medium—media
Criterion—criteria
Mouse—mice
Ox—oxen
Tooth—teeth
Woman—women

6.結尾-o直接加s
Ex: halos, lassos, salvos, memos, pianos, radios
例外須加-es
Cargoes, echoes, heroes, potatoes, tomatoes, embargoes, mosquitoes, Negroes, tornadoes, vetoes

7.少用字的單複數
Cherub—cherubim
Seraph—seraphim
Soliloquy—soliloquies
Alumnus—alumni
Focus—foci
Fungus—fungi
Radius—radii
Datum—data
Phenomenon—phenomena
Stratum—strata
Analysis—analyses
Basis—bases
Oasis—oases
Hypothesis—hypotheses
Parenthesis—parentheses
Thesis--theses

note:
us->i
um->a
sis->ses
不規則名詞
man-men
woman-women
child-children
person-people
foot-feet
tooth-teeth
goose-geese
mouse-mice

單複數同型
deer-deer
fish-fish
sheep-sheep
means-means
series-series
species-species
headquarters-headquarters(總部,...團)
corps-corps

沒有單數型 動詞一律用複數
clothes
goods
groceries
tropics
belongings
congratulations

成雙成對者~恆為複數形
jeans
pants
shorts
trousers
pajamas
glasses
scissors
tongs(夾子)
………………………………………