时间:2018-12-18 作者:英语课 分类:大学四六级阅读


英语课

   数词


  表示数目多少或顺序多少的词叫数词,数词分为基数词和序数词。表示数目多少的数词叫基数词;表示顺序的数词叫序数词。
  一、基数词
  1)基数词写法和读法: 345 three hundred and forty-five;
  2)基数词一般是单数形式,但下列情况,常用复数:
  a. 与of 短语连用,表示概数,不能与具体数目连 用,如scores of people 指许多人;
  b. 在一些表示"一排"或"一组"的词组里;
  如:They arrived in twos and threes. 他们三三两两的到达了。
  c. 表示"几十岁";考试大,考试伴你同行
  d. 表示"年代",用 in +the +数词复数;
  e. 在乘法运算的一种表示法里,如:3 x 5 = 15 Three fives is (are) fifteen.
  二、序数词
  序数词的缩写形式: first---1st second---2nd thirty-first---31st
  三、 数词的用法
  1)倍数表示法
  a. 主语+谓语+倍数(或分数)+ as + adj. + as
  I have three times as many as you. 我有你三倍那么多。
  b. 主语+谓语+倍数(分数)+ the size (amount,length…) of…
  The earth is 49 times the size of the moon. 地球是月球的49倍。
  c. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…
  The grain output 1 is 8 percent higher this year than that of last year.
  今年比去年粮食产量增加8%。
  d. 还可以用by+倍数,表示增加多少倍
  The production of grain has been increased by four times this year.
  今年粮食产量增加了4倍。
  2)分数表示法
  构成:基数词代表分子,序数词代表分母。分子大于1时,分子的序数词用单数,分母序数词用复数:
  1/3 one-third ; 3/37 three and three-sevenths.

1 output
n.产量,输出,输出功率,输出端;vt.输出(信息等)
  • Grain output reached a new high in the three years.谷物产量达到三年中最高水平。
  • The chart showed us the global output of a factory.这张图表展示了一个工厂的总产量。
标签: 英语六级
学英语单词
abjectnesses
Anutans
aseptic rearing
attacking midfielder
autoconditioning
automatic exchange board
baly
blackbody radiation
building material dealer
cangas de onis
cannette
cerenes
chiter
chronic conges tive splenomegaly
clostridocin
code of conduct for pesponsible fisheries
compensating capacitor
Cortegana
cryptograined texture
current gain cut off
decit
digital TV tuner
discommenders
divided bath
double bonds
double pole single throw switch
Draeger escape apparatus
dust analyzer
dyclosium
element time
Eupatorium clematideum
faint action
Fatah-RC
fatware
Fenised
fighting noise
finite open refinement
fixed-price competition
flowcytometer
gas-filled electron tube
halt phase
hebridean isless
heel gap
hole-pressure error effect
i-knawen
inlet compressor stage
isentropic exponent
isentropic recompression
jack traverser
La Courneuve
link disconnection
logarithmic form
maternal-mortality
metallacycloalkane
Moh's strength theory
molybdena-alumina catalyst
mon-
monocentric bundle
morning star
motherfuckery
mount raniers
Mullsjö
multiparameter self optimizing system
narcokleptocracy
negative temperature coefficient thermistor
nematically
non-stationary random vibration
normative measure
NPHA
number of regulation
overpotent
overslur
panic buttons
phoroscop
phrenzied
pleiotropies
Populus intramongolica
programming principles
pumpout
Quonset hut
re-occurs
run into tough weather
Sea Harrier
sewage-works effluent
shielding property
shimkus
solar thermal system
state-variable analysis
sticky dough
stonelessness
synchronous clock motor
think and think
time-inconsistency
total memory
trypsin digestion
Tulipa edulis
two selenoid
Unificationism
until the silks develop
VoIP Phone
zeringue
zirconium oxide coating