2007年初中英语九大词类复习攻略-数词
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(单词翻译:双击或拖选)

  六、数词

  (一)基数词在英语中表示数目的词称为基数词。

  1.基数词的构成

  (1)1-20

  one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen,

  sixteen,seventeen,eighteen,nineteen,twenty

  (2)21-99先说“几十”,再说“几”,中间加连字符。

  23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one

  (3)101—999先说“几百”,再加and,再加末两位数或末位数;

  586→five hundred and eighty-six,803→eight hundred and three

  (4)l,000以上,先从右往左数,每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为

  million1,第三个“,”前为billion(美式)或thousand ,million(英式),然后一节一节地表示。

  1,001→one thousand and one

  9,785→nine thousand, seven hundred and eighty-five

  18,423→eighteen thousand,four hundred and twenty-three

  6,260,309→six million two hundred and sixty thousand three hundred and nine

  750,000,000,000→seven hundred and fifty, billion(美式) seven hundred and fifty thousand million(英式)

  2.基数词的用法

  (1)作主语

  eg.Four Of them come from Paris.

  (2)作宾语

  eg.一How many books would2 you like?

  一I would like two.

  (3)作表语

  eg.Seven minus3 two is five.

  (4)作定语

  eg.There are three people in my family·

  (5)作同位语

  eg. You two will go swimming with us.

  (6)表具体数字时,hundred,thousand,million用单数。

  eg. There are six hundred students in our grade.

  (7)表不确定的数字时,数词用复数。若带名词,再加of hundreds of(数百,成百上千的),thousands of(数干,成千上万的),millions of(数百万)

  eg,They arrived in two sand threes.他们三三两两地来了。

  (8)表示“…十”的数词的复数可以表示人的岁数或年代。

  eg. He is in his early thirties.他有三十来岁(31—34岁):

  This took4 place in the 1930s.这事发生在二十世纪三十年代;

  (9)表示时刻

  eg.I watch CCTV News5 at seven o’clock every evening.

  (二)序数词在英语中表示顺序、次序的词称为序数词。

  1,序数词的构成

  (1)一般在基数词后加th

  eg.four→fourth,thirteen→thirteenth

  (2)不规则变化

  one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth,twelve--~twelfih

  (3)以y结尾的十位整数,变y为ie再加th

  twenty→twentieth, forty→fortieth, ninety→ninetieth

  (4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。

  twenty-first,two hundred and forty-fifth

  2.序数词的用法

  (1)序数词作定语时,一般要与定冠词或物主代词连用。

  eg.Tom is their second son.

  He is the first one to come here.

  (2)序数词有时可与不定冠词连用,表示数量上"又—",“再一”

  eg: He tried a second time.他又试了—次.

  Shall6 l ask him a third time?还要我再问他—次吗?我已问了他两次)

  (3)序数词的缩写形式为:阿拉伯数字加上这个词的末尾两个字母。

  1st 2nd,3rd,4th,20th,21st,22nd,23rd

  (4表示年、月、日时,年用基数词,日用序数词。

  2005年8月15日:(英)15,8,2005=15th,August,2005;(美)8,15,2005=August 15th,2005

  (三)基数词和序数词都可以用来给数字编号。

  No.1(1号),No.3bus(3路公共汽车),Room 103,(103号旁间)

  The first lesson=Lesson Two(第二课)

  (四)分数词的表达

  分子用基数词,分母用序数词,分子大于1时,分母加s

  eg.1/3-one third;2/5-two fifths7

  (五)数学运算的表达

  eg.3+5=8 Three plus/and five is eight.

  9-2=7 Nine minus two is seven.

  6x5=30 Five times six is thirty /six unutilized five is thirty.

  8÷2=4 Eight divided8 by two is four.

 



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1 million D7QzO     
num.百万,100万;n.无数,大众
参考例句:
  • I've seen it a million times.我在书上看过无数遍了。
  • What will you do if you had a million dollars?如果你有一百万美元,你会干什么?
2 would 8fPwB     
aux.will的过去式;愿,要;常常;大概;将要,会
参考例句:
  • Why would you say that?为什么你会这么说?
  • Would you please help me?你能帮帮我吗?
3 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。
4 took indwq     
vt.带,载(take的过去式)
参考例句:
  • I took my dog for a walk along the river.我带着狗沿那条河散步。
  • It took me about two hours to cook the meat.我花了大约两个小时来煮这些肉。
5 news OG1xE     
n.新闻,消息
参考例句:
  • No news is good news.没有消息就是好消息。
  • I like reading hot news.我喜欢读热点新闻。
6 shall lzFwQ     
v.aux.(主要用于第一人称)将
参考例句:
  • I shall always love you.我将永远爱你。
  • Which club shall we join?我们要参加哪个社团?
7 fifths 23be4669558e27f7d04a4ac41d1ab38d     
adj.第五n.五分之一( fifth的名词复数 )
参考例句:
  • The ivory Buddha carved by Shen Weizhong, a contemporary Chinese sculptor, is the world's smallest piece of sculpture, its size being just four-fifths that of a grain of rice. 中国当代雕刻工艺师沈为众雕刻的象牙佛像是世界上最小的雕刻。这个象牙佛像只有一粒米的五分之四大。 来自《现代汉英综合大词典》
  • He tried to remember, span the crowded events of three-fifths of a lifetime. 他想回忆一下,想越过一生中五分之三的光阴和繁杂的事件去回忆。 来自辞典例句
8 divided skCzv     
adj.分离的,被分割的,分裂的v.分( divide的过去式和过去分词 );划分;分离;(使)产生分歧
参考例句:
  • The organisms can be divided into discrete categories. 有机体可分为许多互不相联的种类。
  • The government is divided on this issue. 政府在这个问题上意见不统一。
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