时间:2019-01-16 作者:英语课 分类:英文语法词汇


英语课

   可数名词分为单数和复数。


  名词单数就是该词本身,在其前面加a或an。
  1、单数
  如a desk(一张桌子)
  an old desk(一张旧书桌)
  2、复数:要表示一个以上概念时,要用名词复数形式
  规则变化
  1)一般情况下加-s
  如book--books(书) desk--desks(书桌)
  2)以s ,x 1 ,ch , sh结尾加-es
  如box--boxes(盒子) bus--buses(公共汽车)
  注意①以 th 结尾加-s, month--months
  ②stomach--stomachs
  3、以辅音字母+结尾,变y为i再加- es。
  如city--cities(城市) country--countries(国家)
  注意以元音+y,直接加s。如:day--days(天),boy--boys(男孩)
  4、以f或fe结尾,复数变f或 fe 为v再加-es
  如knife-knives(书) , half-halves(一半)
  (thief ,wife ,life ,shelf ,knife ,leaf ,self ,half ,wolf)
  注意①有少数词后直接加s,如roof-roofs (屋顶)
  5、以o结尾
  (1)辅音字母加o结尾名词的加-es
  如tomato-tomatoes(西红杮)
  potato-potatoes(土豆)
  (2) 元音字母加o结尾名词的加-s
  如piano-pianos (钢琴), zoo-zoos(动物园)
  photo-photos (照片), kangaroo-kangaroos(袋鼠)
  kilo-kilos(千克)
  注意zero 两种方式都可:zero-zeros或 zeroes(零)

n.字母x,罗马数字10adj.X形的,X级的(电影等),第二十四的
  • The possible permutations of x, y and z are xyz, xzy, yxz, yzx, zxy and zyx. x、y和z的可能的组合方式为xyz、xzy、yxz、yzx、zxy和zyx。
  • The chest X-rays showed moderate enlargement of the heart. 胸部X光片显示出心脏稍有扩大。 来自《简明英汉词典》
标签: 可数名词
学英语单词
acinesic
air-transport system
all in all
all welded hull
allocations to accounting periods
angeliques
anti-markets
antitheater
automatic programming machine
bemporad
benanserin hydrochloride
bending stiffness
biaxial plane
binomial system
boron equivalent
braggartism
cape-gooseberry
cepelinai
chill harden(ing)
claims-processing
completely-specified function
constantinea rosamarina (gm) post et rupr
constult
contour of noise
corner fitting of gate
corrosion behaviour
D-Est
design patent
diminution of fertility
dry fluid drive
EPFR
equilibrium quantity
eutectoid transformation
ferrimagnetism
flashing liquid
floating sand
floor mold
Flunarl
fudge on
G. R. Kirchhoff
gas background
geranium pratenses
Gloger's rule
granular fertilizers
helical gear tooth
hierachiology
histomorphometries
hydroscopic substance
ILIB
intergelisol
irregular cross section
isomasticadienonic acid
JMRO
line pressure source
linguo-nasals
liver breath
long term of years
make yourself scarce
mal-infortuned
measure of absolute variability
meat cleaver
Michipicoten River
modified phenolic resin
monogenous
national center
national sample system
Oignies
Old birds are not to be caught with chaff.
Olom
organic ion
overlond capacity
pectoral drops
pedaneous
Peter The Venerable
Ponorogo
pseudofructose
pulley frame
redlys
relative circle-point curve
rmoes
sarkisyans
sea bears
seym
shield-toad
simplex printer
simulator time
slot line
speed-coding system
spinozist
sportsperson
superhigh energy physics
surplus social purchase power
T.RES
teck
tooth clearance
torihada
trace cache
Tsito
tumbler drier
unvesseled
vapor degreaser
Yuma, B.de