时间:2018-12-18 作者:英语课 分类:陨落星辰第二季


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
abarticulation
additional channel
airborne geophysical survey
alphabet soups
althea, althaea
amess
anabolism
annulus conjunctivae
aspenglow
Baldushk
Barakovo
barber-surgeon
beltrams
bid on/upon
bourbon whiskey
charging-crane
clo chard
coefficient matrix
cohesive zone
committee of tax statutes research
Common-Mode Signals
computer-processing
conflicting phantom aspect
congruity principle
coordinate link(age)
cost-benefit analysis method
cracked tooth
crystal-field effect
CTSR
dalmenies
deep-bluer
deken
detachable nose
dial up line
dogends
domenici
Douglas Head
drop-side window
ebvs
Eckist
electrolytic beaker
elliptic quadratic surface
eruptive cellular nevi
etamon chloride
Eurocentricity
fire-break distance of production buildings
fire-resistant steel (fr steel)
fixed plus variable structure
fluorescence staining
genus of meromorphic function
goes nuts
hark back
heanue
horseshoe vetches
Humulus japonicus S.et Z.
impetigo contagiosa bullosa
intercostal arteries
interiorized stuttering
irrefutable
jorus
Lagerstremine
lunar surface vehicle
main objective of crop husbandry
mechanoscopy
microprocessors-design methodology
microscopic projector
moisture figure
nitrite process
non-treaty
ognorhynchus icterotis
open half space
orphanotrophia
out-of-pocket
overdue balance
penny lane
phase voltage
potentiated
proto-lysosome
quickmatch
reactiveness
readducing
rough-cut file
Salvelinus alpinus
Savitar
single squirrel-cage rotor
sky parlor
soil tillage
sting-bull
surf clams
sweep ... along
T'ai-yeh Pond
TAAM
temporary share or stock fraction
to the question
uremic retinitis
Uryū-gawa
utilization of a loan
wallaby mt.
wayside coil
weather working day
willow warblers
worm one's way in