1)基数词写法和读法： 345 three hundred and forty-five;
a. 与of 短语连用，示意概数，不能与详细数目连 用，如scores of people 指许多人;
如：They arrived in twos and threes. 他们人山人海的抵达了。
d. 示意"年代"，用 in +the +数词单数;
e. 在乘法运算的一种示意法里，如：3 x 5 = 15 Three fives is (are) fifteen.
序数词的缩写方式： first---1st second---2nd thirty-first---31st
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)+ 描述词(副词)比拟级+ than…
The grain output is 8 percent higher this year than that of last year.
The production of grain has been increased by four times this year.
1/3 one-third ; 3/37 three and three-sevenths.The number of
or the number of programs is called numerals, and the numerals are pided into the cardinal and the ordinal numbers. The number of numeral numbers is called the cardinal number; the numeral of the program is called the ordinal number.
1) base word writing and reading: 345 three hundred and forty-five;
2) cardinal general is plural, but the following condition:
A. and of for the singular phrase, and not with the number of approximate numbers, such as scores of and people
B. in many people; some of the " a row of " or " group " phrase;
: They arrived in twos and as they arrived in the huge crowds of people threes.
C. of " "
D.; a few years old; "'s " sketch; in +the,
E. + numeral singular; in a schematic method of multiplication, such as: 3 x 5 = 15 Three fives is (are) fifteen.
two, abbreviated ordinal
first---1st second---2nd thirty-first---31st
three, 1) multiple numeral signal method
A. subject + predicate + ratio (or fraction) + as + adj. + as
I have three times as many as you. I have three times as many as you.
B. subject + predicate + multiple (fraction) + the size (amount, length...) ) of...
The earth is 49 times the size of the moon. earth is 49 times that of the moon.
C. subject + predicate + multiple (fraction) + description word (adverb) analogy + than...
The grain output is 8 percent higher this year than that of, 8% more than last year's food production.
D. can also use by+ multiples to indicate how many times the
The production of grain has been increased has been added. The annual grain yield has increased by 4 times.
2) the fraction indicates the formation of the method
: the Cardinals represent the molecules and the ordinal numbers represent the denominator. When the molecule is greater than 1, the number of ordinal numbers of the molecule is plural and the denominator ordinal number is singular:
1/3 one-third; 3/37 three and three-sevenths.
- 上一篇：甩掉Chinglish发音， 练就流利口语有妙招