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可数名词有单数变成复数的规则:
1)绝大数的可数名词由单数变为复数时,直接在后面加s。结尾是轻辅音读【s】,结尾是浊辅音或元音读【z】,读音以s,z,,t,d结尾使读【iz】,例如:
Bookbooks
fi
gerfi
gers
oldolds
Tabletables
toy
toys
wi
dow
wi
dows
2凡是如以ch、s、x、is、z、sh结尾的可数名词,变复数时在该词尾加es。读【iz】,例如:
MarchMarchesfur
ishfur
ishes
foxfoxes
Busbuses
watchwatches
boxboxes
Axisaxes
basisbases

aris
ares
Hypothesishypotheses
quiz
quizzes
3)由辅音字母y结尾的可数名词变复数时,先把y改i,再加es。读iz例如:
Compa
yLibrary
compa
ieslibraries
storystories
4)以o结尾的名词,如果不是外来词或缩写词,如果是有生命的加es,无生命的s,例如:
Tomato
tomatoes
Bi
gobi
gos
phototorpedo
photos
potatopotatoes
torpedoespia
opia
os
macro(宏指令,计算机语言)
macros(缩写词)
heroheroesradioradios

egro
egroes
mosquitomosquitoes
bamboo
bamboos
5)以f或fe结尾的词,多为f或fe改为ves,但有例外,读【vz】,例如:
K
ifek
ivesstaffstaves
lifescarf
lives
leaf
scarves
leaves
目前搜集的直接假s:
roofroofsserfserfs
beliefbeliefssafesafes
gulfgulfschiefchiefs
6以us结尾的名词,多为外来词,通常将us改变为i构成复数,
fFu
gusCestus
fu
giabacuscesti
abacicactuscacti
7)以um结尾的名词,将um改为a,读音时去掉尾音【m】,例如:
ForumDatum
forastadiumdatavacuum
stadiavacua
aquariumaquaria
8)以a结尾的名词,在该词的末尾加上后缀e,读【i:】,例如:
Larvalarvae
formulaformulaeala
alae
Mediamediae
hydrahydrae
9)单复数一致的可数名词例如:
Chi
ese
Chi
ese
foodfood
salmo

salmo

fur
iture
fur
iture
sheepCattleca
o

sheepcattleca
o

fishdeerTrout
fishdeertrout
10)特殊可数名词变复数,例如:
Ma
me

Woma

wome

Goose
geese
Childchildre

footfeet
chairma

chairme

mousemice
datumoxtooth
dataoxe
teeth
注意:一些词虽然加了后缀s,但它并不是复数形式,而具有别的含义,例如:New(新的,adj)
ews(新闻,
)Good好的,adjgoods商品,

fr
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