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
all politics are local
Andes disease
antirostrum
arrayed waveguide grating router
Azat-le-Riz
baisse
be killed in battle
buffalo carpet beetles
carfle
cascade losses
ceratium contortum saltans
chanty
Christianhood
Cleyera obovata
coconut shies
cohune oils
compact surface
companion flange
cover-crop
cryptocidin
de jong and bouman photographs
dead time for pressure regulator
dotal system
dynamic branch prediction
efficiency of free energy capture
electrical resistance strain gauge
erubin
exhaust valve casing
expelling wind and clearing away cold
family ariidaes
feelingly
foreign corporation organization fee
galactagogue factor
Gaylussacia baccata
geomagnetic measurement on satellite
glaucoma in aniridia
gogle
gristies
have a skate on
Hemiascomytes
hoggard
horngren
hypertwistor
impulse recording
invaginate planula
ivory china
key ring
Kronshtadt Rebellion
lateriramulosa a-inflata
leaded free cutting steel
loss of outage
manufacturing overhead budget
markleeville
Martens strain gauge
mastino
model building language
morphinanium
multiple thin-layer chromatography
N-core per bit storage
noncontiguous linkage storage
nondiscrepancy
nunka
onychogalea lunata
orifice flow tube
Osnaburgh
out-eat
overseen
Palmeirinhas, Pta.das
paper substrate
paracypria kueiyingae
polygalacin
pressed cage
Radar coverage.
regular precession
rice gall midge
rotary coupler
schlotheimia pungens
school career
shortnesses
single scull
spectacles type tunnelling method
spuddle
St-Ignace-du-Lac
subfeldspathic sandstone
sun marigolds
take offence
tetraterpenes
Thai Airways Company
the train of thought
tight building syndrome
tradewind
triple valve branch pipe
tuberculosis of intestines
turn belly up
unmodulated signal
verticality adjustment
Welsh Wales
wings of sphenoid bone
wither up
Yukagirskoye Ploskogor'ye
zero assignment
zonograph