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
absolute threshold
abyssal fan
acousto-optic scanning
Ancient of Days
Andrographis Wall.
angiogenesis factor
antirattle spring
apportionings
ark-floater
Babel I.
bakeoff,Bake-off
banninated
besiegements
bestirring
Biotirmone
Book of Malachi
buccoaxiocervical
buddle frame
bushmaster
capital of Greece
centrifugally spun concrete pipe
Chandler R.
charged particle equilibrium
chromium(ii) selenide
cloughie
cottonwool
countercurrent treatment
crank journal
dasyproctas
degression of tax rate
desert dormouse
det (data terminal equipment)
distorsion settlement
draggle-tail
Eblaite
extraterrestrially
Fagopyrum gilesii
fantodss
Fockea
fusion-flow test
Glochidion lanceolatum
Habenaria humidicola
hanadamine
hatchery pond
heat-transfer agent
hemispheral
hexahydrobenzoic acid
hot swell(ing)
hundredpercenter
impedance protective system
incombustibly
inferior laryngotomy
inventor's certificate system
Ivanov Mys
job-shop production
Kenneth Williams
Koolunga
late repair
Lepontine
locality development model
lysis from without
macrosomite
minimum polished rod load
Monkey Pt.
monolithic operational amplifier
monometallic
multi-purpose hardness tester
multi-purpose wood working machine tool
occipital margin
oil syringe
open tracery
Papua, G.of
pre-winter
propagative organ
prose poetry
pull-in step
quadrature phase speed sensitive output voltage
rare-earth chelate compound
re-delivery certificate
rosy boas
Sanscript
scotches
sesunc.
set of posts
shoe contact pressure
sialophosphoprotein
sigillographer
sikkema
skenitis
static load test
syphilitic pathology
systemwide
technical measures
there is a lack of
unclomb
unthende
ununifiable
vertical tabulation character (vt)
vomer
water-chestnut
weightist
wyspa