特殊数字的表示法
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(单词翻译:双击或拖选)

  (一)年 月 日表示法

  1. 年代 年代前用 in.

  ( in ) 897 读作 ( in ) eight hundred and ninety-seven

  ( in ) 1961 读作 ( in ) nineteen sixty-one (或 in nineteen hundred and sixty-one)

  ( in ) 1905 读作(in ) nineteen and five

  ( in ) 1800 读作( in ) eighteen hundred

  2. 月份 月份开头第一个字母须大写,表示“在某月”时, 月份前面用 in。下面月份后附有缩写式。

  ( in ) January Jan. ( in ) March Mar1. ( in ) December Dec.

  3. 日期 用序数词(前需要加the)表示; “ 在某日”, 前面用介词on.

  ( on ) the first ( on ) the eighteenth ( on ) the thirty-second

  4. 某年 某月 某日

  in Sep. 1954 on May 17, 1960 on Oct. 1, 1949(读作on October the first, nineteen forty-nine)

  注:当年月日完全用数字表示时, 美国人把月放在日前。 8,6,79在英国表示June the eighth (79年6月8日), 但是在美国却表示August the sixth (79年8月6日)。

  (二)时刻表示法

  1.英语通常用at所引导的表示时刻。如:

  ( at ) six or six o’clock

  ( at ) eight or eight o’clock

  2.如说几点几分,用下面的方法

  a)表示几点过几分,用介词, 但分数须在半小时以内包括半小时。如:

  eleven past seven

  a quarter past eight

  half past nine

  b)表示几点差几分,用介词to, 但分数需要在半小时以上不包括半小时。 如:

  two to seven

  a quarter to eight

  eighteen to nine

  注:上午可以用am表示,下午用pm表示,例如:

  9.50am 11.05pm

  (三)分数词表示法

  1.分数词是以基数词和序数词合成的,基数词代表分子,序数词代表分母,除了分子是“1”的情况外,序数词都是用复数,(分子用基数词,分母用序数词,分子大于“1”,分母则加“s”)如:

  1/4 one-fourth 2/3 two-thirds 7/9 seven-ninths 5/12 five-twelfths

  2.另外还有下面一些表示法:

  1/2 (one) a half 1/4 a (one ) quarter 3/4 three-quarters

  (四)小数的表示法

  7.8 ------seven point eight

  0.4---------zero point four

  0.125----- zero point one two five

  603.09---six hundred and three point oh nine

  小数作定语时较多:

  Its total industrial output2 value was up 5.6 times in these years.

  Our grain output is now 2.4 times that of 1970.

  (五)百分数的表示法

  百分数由per cent 表示,常常和by连用,作状语也可单独作状语:

  Its total output value increased by 11.5 per cent over the previous year.

  The output of cars in the U. S. last year was 24 per cent less than in 1973.

  有时用作定语 宾语等:

  The loss3 of metal has been reduced to less than 20%.

  The March figure for output value registered4 a 37% increase over February.

  (六)倍数的表示法:

  一倍用once,两倍用 twice,两倍以上用基数词+times。如:5倍five times。

  (七)一些数学公式的读法:

  3+8=11 Three plus eight is eleven.

  9-7=2 Nine minus5 seven is two.

  a>b a is more than b.

  a

  (八)约数的表示法

  ⑴ “多于”用more than 或over

  This room can hold more than (=over) 500 people.这间屋子能容纳500多人。

  ⑵ “少于”用less than

  There are less than thirty balls in the basket.篮子里不到三十个球。

  ⑶ “或……以上”用or more

  The music hall can hold 7000 people or more.音乐厅能容纳7000人或7000人以上。

  ⑷ “或……以下”用or less

  The house can hold 50 people or less. 这座房子可容纳50人或50人以下。

  ⑸ “大约”用about, around, nearly等

  The box weights about 50 pounds.这个箱子重约50磅。

  ⑹ “左右”用or so

  In the past ten years or so , they have changed a lot.在过去的十年左右的时间里,他们改变了许多。

 



点击收听单词发音收听单词发音  

1 mar f7Kzq     
vt.破坏,毁坏,弄糟
参考例句:
  • It was not the custom for elderly people to mar the picnics with their presence.大人们照例不参加这样的野餐以免扫兴。
  • Such a marriage might mar your career.这样的婚姻说不定会毁了你的一生。
2 output NJbxI     
n.产量,输出,输出功率,输出端;vt.输出(信息等)
参考例句:
  • 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。
3 loss s0vxZ     
n.损失,遗失,失败,输,浪费,错过,[军]伤亡,降低
参考例句:
  • His death was a great loss to the country.他的逝世对这个国家是一大损失。
  • Because of the continued loss,the factory closed down.由于连续亏损,工厂关闭了。
4 registered 3kvzQg     
adj.登记的,注册的
参考例句:
  • Ships were registered abroad to circumvent employment and safety regulation. 船只在外国注册以逃避有关雇佣和安全的规定。
  • In former times, only property owners could be registered as voters. 从前,只有有财产的人才能登记作选民。
5 minus CDrx1     
n.负号;adj.减的,负的,阴性的;prep.减,缺
参考例句:
  • The temperature was minus 30 degrees.气温为零下30度。
  • He seems to have mistaken a minus for a plus.他似乎把负号误作正号了。
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