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
alarm gauge
Alem, El
Ampullariidae
anisometric projection
antiutilitarianism
Apartheid Wall
archivos
atrop-
auxiliary cutting surface
bacterial leaf spot
biologic effect of ultrosound
Black Sash
blastclastic
boiler regulator
butanol
calculated diameter
Chlorosplenium
circulation water leakage detector
clothmeasure
cluster beam
COLBP
collector subsystem
colorbreed
compensated thermometer system
contain a fire
cumulative frequency curve
dark background
dibotriocephaliasis
DLTU
dubylle
dull book
ecowashes
eggbound
electric heating wire
endopthalmitis
ex.g.,ex.gr.
excess demand curve
far ben
faultless
folliculinid
G6PD
Gandamaka
graesser
halogenosilicic acid ester
hartes
heat plate welding of plastics
high-power ultrasensitive radar
holding efficiency
hour-circle
immunodominanee
inflation assumption
international development association (ida)
inversion threshold
jolt squeezer
Khaibar
korray
L-Gluthathione
laissez-faire policy
last legs
lee-yang theory
maxillo palatine process
MDBK
milldust
mooties
moratorium on foreclosures
natural kind
no-roll roughing
oblique fire
ogb
open onto
polyKDN-gp
potassium hypophosphate
preferred report name for the observation
professor
protective cream
pyeloscopy
quick and dirty prediction
Rayleigh loop
reaction isotherm
representative rates of exchange
rotating arc
Roum.
rules of conflicts
selfdefense
shitmixed
shoeicide bombers
Sirdalud
snap to grid
sorbitan ester surfactant
speckled perch
Streptococcus cinnabareus
Sukhumi(Sokhumi)
tazawa
temses
thorium resources
tipping angle
troop
tsp
unoppressive
usership
ushpizin
VM (velocity meter)