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
ADODB
alice shoal
aminomed
antiprogressive
architecturalizations
barium silicofluoride
barrier layer capacitance
basic charge
best statistical fit
blairmorite
brown leaf rust
canvas-type pickup
captain's biscuit
celesbian
cell-homogenized cross section
complete IDP
conditional-lethal mutant
control switch-board
copy recipient
cotechino
cyber-espionage
data administration
Dendropanax confertus
depleted material
directional coalescence pattern
disimproved
dissociative disorder
drymoglossums
DSOT
Earith
embryologically
fertilysin
flange machinery
flat gain control
flow stabilizer
forbidden transition
forsterite refractory
Frederick Law Olmsted
Grakhovskiy Rayon
gummoses
half-words
hamletted
hydraulicons
Hydrotite
inhomogeneous broadening!
input resistance impedance
Izumizaki
jct.
joumana
juncoes
Koppers-Totzek gasifier
leavers
Leiss prism
Lingulida
lock/unlock facility
lope
M'Clintock, C.
mixed grain size
modifiable parameter
nicovich
non omnis moriar
notion of subprocedure
oilo
one's spies
overmanages
oxide superconductor
perimeter
petrinest
playmobil
point lock
positive prescription
prefind
printing-reproduction system
prunus pumilla susquehanaes
radar wind sounding
radioisotope tracking level gauge
refine into
Relizane, Wilaya d'
Resbalón
resistance RAM
Ripley's Believe It or Not
scoop feed elevator
sea-floor trenching machine
short span structure
shtik
shut yourself off
sky synchronized long range navigation
SLIF
Stark effect
steel silo
submarine obstacles
Tai Po Industrial Estate
television relay system
tennantite
top man
topology map
triplane target
Trypanosoma castellani
unavoidable accident
uncanniest
velarizing
water gas pipe