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
2-methylpropanal
a ball of wax
Acteon
adomar
alphabetisations
aneurysm clip
apple crumble
astragaloid bone
atchievement
balsam herb
banker's authority
Banksy
biocomputing
birthday effect
boothwyn
caffeinelike
chain hydrometer
chartist
clearing fund
collective cell
computer misuse act
condition.
controversion
cubensis
curve of sectional areas
d'Alembert's paradox
dendryphion lepidagathidis
deposit in an assumed name
Deutschkreutz
dobricas
evaluation order
experte
extracts
feeder schools
fisher's logarithm series
fluorescent-mercury lamp
FOSDIC (film optical scanning device for input to computer)
friction sawing
fumeroot
gain height
gallery timbering
hematuric fever
hilar infection
Humphreysville
hypoxanthin
intravascular hematopoiesis
introgression hybridization
irrigating spoon
Kyundyaye
Lisfranc's ligament
lymphokentric
machine-embroidered
margar
mastiche oil
middle white(m. yorkshire)swine
Mikindani B.
Monacans
navigation Doppler radar
net-knot
neutron sensitive material
nmod
noctuary
northern screamers
number of days' sales in receivables
oil splash ring
onsweep
overgirth
peck cutter
Pericallis
piaffes
Pinocchios
pressure operated switch
primordial vein
protruded
quick engine change unit
range of normal audibility
ripple percentage
s tongue
selenographic
serpentine jigging tenter
seventh-night
shell type
someone's pidgin
spectroflow
spectrum envelope
state seal
stylizations
symbolic input programme
tablefork
the destitute
thematizing
three-colour photometry
three-part fugue
togethering
tuberculous scrofuloderma
two-dimensional magnetic field
union-swivel end
voicing
X-ray diffractlon
xuhui
zenstomin
Zimbabwe(-)Rhodesian