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
a knight in shining armor
accommodography
achille rattis
Acilan dye
air-core reactor
anthelic arc
Bacti-Cleanse
BDOS
Belvedere Airport
bixler
broad-row cultivator
Buddylist
butadiazamide
butter one's bread on both sides
calcareousness
cerillo
chloro-tert butylphenol
cine coronary arteriography
cinnamomun acuminatifolium hay
colo(u)r sensitometry
Constantin
cost, insurance, freight and war risks
doneeka
double strut trussed beam
Dubbs cracking
effeminateness
embryonic disk
energy loss curve
entrance track
essential right ideal
fiduciary fund
fingerling rearing by culture of grasses in pond
Foso
fur burger
fur(fur)amide
geigerite
Girl Guide, girl guide
gouge carving
Grœnavatn
Halar
heat constant
hecatonicosachora
heramandiol
high calcareous nappe
horizontal manhole
hyperbolic chart
hypercryesthesia
imperfects
in for a dime, in for a dollar
inactive case
international debt
isotopic geological age
joint test
krymotherapy
lamp cord
laying-off floor
lentivector
lubricating plug
Mini Mills
open competition plan
order Equisetales
oscillating cylinder angle
Palaeolithic age
path-dependency
personately
Peshawbestown
photographic masking
plotting office
presidentials
process image
regiones suprasternalis
Remoncourt
rexburg
river boat
salve the phenomenon
sand hornet
scavenging air valve
segregational
sequence of neighbo(u)rhoods
sex pilus
shear field
Shelton Jackson Lee
similar permutation representation
specify feature
steadly
tallow titre
tangible investment
thelephoroid
thermo reduction
three dimensional fluorescence spectrum
Transcaucasians
transient overload forward current limit
transportable electronic shop
ultrasonic light modulator
vinyl chloride-vinyl acetate copolymer fibre
viscous crossflow
walton carpet
waste disposal system purification system
well-travelleds
wheel spoke
wiener nose