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
accumulator injection
agrostographical
alternative-fuels
antiaggregants
artisone
autochrome process
base of a cup decorated with carved designs
be discharged from
bellyings
besties
biassed cloth
bottom of throat
breaking down point
broken case
byte array input stream
Casearia kurzii
chaplygin-Karma-Tsien relation
circumferential distortion
compressed salt
concentration fluctuation
continuous analyzer
corporate entity
coup de soleil
cumulative probability distribution
cyberstalk
demargarination
dictyocline griffithii wilfordii
digital in-output circuit
discretionary security
Eastern Western
end-of-year
epeirogenic sedimentation
Erian orogeny
esses
fair-catch
film laboratory
force due to friction
franz
Frenulum valvae ileocecalis
frequency-shift modulator
ganglionated nerve cord
geological steering
gingivoproximal enamel
governmentalises
great exuma i.
Hagenburg
half-sheet work
hardness-testing machine
high-pressure steam turbine
Homer nodded
image detail region
ingot cropping
iron(iii) lactate
jig machine
job-offers
kallaway
lifter roller
liftingshaft
linear chain molecule
masthermannia hirsuta
menstrual synchrony
midwestern
mogans
muwafaq
neighbor discovery
norbornadienes
optical exposure
orbit perturbation of the satellite
Ord River Dam
ore localization
orels
paradox in meaning
PEGylate
phenanthrene nucleus
pickup plow
programming principle
protein glycation
pulsed lamp
querra
Radio Industry Council
Retail investors
reterritorializations
sarpent
self-centring chuck
servo motor drive circuit
Sidi Abd el Aziz
splash-proof enclosure
state servitude
steam automobile
steering-wheel geometry
tetraiodophthalein
time-to-tracking
Trentola-Ducenta
tubular equipment
unsilence
upper half
vinelli
what the heck!
wipe one's boots on sb
yard seasoning
ziphius cavirostris
zooplankton