山東省郯城第三中學高中英語語法大全：第13章 數詞（含鞏固練習）
一.概念:
數詞分兩類:基數詞和序數詞.表示數目的詞叫基數詞,表示須序的詞叫序數詞.
二.相關知識點精講
1.基數詞
1）基數詞一般可寫成如345或three hundred and forty-five。
2）基數詞一般是單數形式，但遇下列情況，常用復數：
a. 與of 短語連用，表示概數，不能與具體數目連用，如scores of people 指許多人；
b. 在一些表示"一排"或"一組"的詞組里。例如：
They arrived in twos and threes. 他們三三兩兩的到了。
c. 表示"幾十歲"。 d. 表示"年代"，用 in +the +數詞復數。
e. 在乘法運算的一種表示法里，如Three fives is（are）fifteen。
序數詞的縮寫形式如first---1st second---2nd thirty-first---31st等。
1）倍數表示法 a. 主語+謂語+倍數（或分數）+ as + adj. + as。例如
I have three times as many as you. 我有你三倍那么多。
b. 主語+謂語+倍數（分數）+ the size （amount，length…） of…。例如：
The earth is 49 times the size of the moon. 地球是月球的49倍。
c. 主語+謂語+倍數（分數）+ 形容詞（副詞）比較級+ than…。例如：
The grain output is 8 percent higher this year than that of last year. 今年比去年糧食產量增加8%。
d. 還可以用by+倍數，表示增加多少倍。例如：
The production of grain has been increased by four times this year. 今年糧食產量增加了4倍。
2）分數表示法的構成：基數詞代表分子，序數詞代表分母。分子大于1時，分子的序數詞用單數，分母序數詞用復數。例如：
1/3
one-third； 3/37
three and three-sevenths.
1.______ martyrs have heroically laid down their lives for the people.
a. Thousand upon thousand of
b. Thousand and thousands of
c. Thousands upon thousands of
d. Thousand and thousand of
2.They received ______ of letters about their TV programs.
a. dozen
b. dozen and dozen
c score
d. dozens
3.Who is that man,______ in the front row?
a. one
b. the one
c. first
d. the first
4.We have produced ______ this year as we did in 1993.
a. as much cotton twice
b. as twice much cotton
c. much as twice cotton
d. twice as much cotton
5.The earth is about ______ as the moon.
a. as fifty time big
b. fifty times as big
c. as big fifty time
d. fifty as times big
6.The population of many Alaskan cities has ______ in the past three years.
a. more than doubled
b. more doubled than
c. much than doubled
d. much doubled than
7.The moon is about _____ in diameter as diameter as the earth.
a. one-three as large
b. one three as large
c. one-third as large
d. one third as large
8.Five hundred yuan a month _____ enough to live on.
a. is
b. are
c. is being
d. has been
9.______ of the buildings were ruined.
a. Three fourth
b. Three four
c. Three-fourths
d. Three-four
10.Consult _____ for questions about earthquakes.
a. the six index
b. index six
c. sixth index
d. index numbering six
一.概念:
數詞分兩類:基數詞和序數詞.表示數目的詞叫基數詞,表示須序的詞叫序數詞.
二.相關知識點精講
1.基數詞
1）基數詞一般可寫成如345或three hundred and forty-five。
2）基數詞一般是單數形式，但遇下列情況，常用復數：
a. 與of 短語連用，表示概數，不能與具體數目連用，如scores of people 指許多人；
b. 在一些表示"一排"或"一組"的詞組里。例如：
They arrived in twos and threes. 他們三三兩兩的到了。
c. 表示"幾十歲"。 d. 表示"年代"，用 in +the +數詞復數。
e. 在乘法運算的一種表示法里，如Three fives is（are）fifteen。
序數詞的縮寫形式如first---1st second---2nd thirty-first---31st等?！?/p>
1）倍數表示法 a. 主語+謂語+倍數（或分數）+ as + adj. + as。例如
I have three times as many as you. 我有你三倍那么多。
b. 主語+謂語+倍數（分數）+ the size （amount，length…） of…。例如：
The earth is 49 times the size of the moon. 地球是月球的49倍。
c. 主語+謂語+倍數（分數）+ 形容詞（副詞）比較級+ than…。例如：
The grain output is 8 percent higher this year than that of last year. 今年比去年糧食產量增加8%。
d. 還可以用by+倍數，表示增加多少倍。例如：
The production of grain has been increased by four times this year. 今年糧食產量增加了4倍。
2）分數表示法的構成：基數詞代表分子，序數詞代表分母。分子大于1時，分子的序數詞用單數，分母序數詞用復數。例如：
1/3
one-third； 3/37
three and three-sevenths.
1.______ martyrs have heroically laid down their lives for the people.
a. Thousand upon thousand of
b. Thousand and thousands of
c. Thousands upon thousands of
d. Thousand and thousand of
2.They received ______ of letters about their TV programs.
a. dozen
b. dozen and dozen
c score
d. dozens
3.Who is that man,______ in the front row?
a. one
b. the one
c. first
d. the first
4.We have produced ______ this year as we did in 1993.
a. as much cotton twice
b. as twice much cotton
c. much as twice cotton
d. twice as much cotton
5.The earth is about ______ as the moon.
a. as fifty time big
b. fifty times as big
c. as big fifty time
d. fifty as times big
6.The population of many Alaskan cities has ______ in the past three years.
a. more than doubled
b. more doubled than
c. much than doubled
d. much doubled than
7.The moon is about _____ in diameter as diameter as the earth.
a. one-three as large
b. one three as large
c. one-third as large
d. one third as large
8.Five hundred yuan a month _____ enough to live on.
a. is
b. are
c. is being
d. has been
9.______ of the buildings were ruined.
a. Three fourth
b. Three four
c. Three-fourths
d. Three-four
10.Consult _____ for questions about earthquakes.
a. the six index
b. index six
c. sixth index
d. index numbering six
