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成考专升本英语复习辅导资料五

2007年4月11日来源:233网校
  第四节 数 词(3-3~4-1)

  大纲要求

  基数词及其用法;序数词的构成及其用法;分数词的构成;小数的用法。

  一、基数词及其主要用法

  表示数目的词称基数词。15 fifteen,几百几千不加s,242 two hundred and forty-two,5058 five thousand and fifty-eight,9,600,000 nine million six hundred thousand

  1.基数词可以用于数字的计算。

  6+8=14 Six plus eight is fourteen.

  9-7=2 Nine minus seven is two.

  7X5= 35 Seven times five is thirty-five.

  8÷4=2 Eight divided by four is two.

  2.基数词可以表示人的大致年龄和年代。

  He died in his fifties.

  This took place in 1990s/1990s.

  The professor became successful in his thirties.

  3.基数词可以用来表达年份、时间、电话号码。

  1700 seventeen hundred

  1814 eighteen fourteen

  9:20 nine twenty

  11:30 eleven thirty/ half past eleven

  5:45 five forty-five/ a quarter to six

  88760231 eight eight seven, six zero two, three one

  4.基数词可以用于编号。

  Number six, line 4, page 19, Bus(No.) 332, Platform (No.) 5, Room 101

  5.基数词可以和其他词一起构成合成形容词,在句子中作定语。

  A one-month-old baby can recognize its mother by smell.

  This eleven-month-old baby can speak a few words.

  (The baby is eleven months old.)

  The teacher asked us to write a four-thousand-word essay as our homework.

  (There are four thousand words in the essay.)

  This four-paragraph essay is too difficult for me to understand.

  (There are four paragraphs in this essay. )

  二、序数词及其主要用法

  表示顺序的词称为序数词。如first, second, third, fourth, ninth, twenty-first, forty-fifth等。

  序数词可以用来表示日期和世纪。May the first / the first of May(5.1), August the eighth / the eighth of August(8.8), the twentieth century, the twenty-first century

  序数词在句子中前面一般加the

  The first of October is our National Day.

  She was the third to arrive.

  序数词在句子中前面加不定冠词,表示“再一”又一“。

  Theyll have to do it a second time.

  Shall I ask him a third time?

  When he sat down , a fourth man rose to ask.

  三、分数词的构成

  分数的分子用基数词表示,分母用序数词表示,若分子大于1,分母需用复数。

  two-thirds(2/3),one-third(1/3), nine-tenths (9/10), five-twelfths(5/12)。

  特殊表达法有:one half (1/2),a quarter (1/4), three quarters (3/4) .


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