2012年大学英语六级语法精要：数词（下）4 {9 }% Y$ X; k! _- y* e
序数词
, K9 A' g* s6 M1 o% w 序数词的缩写形式： first---1st second---2nd thirty-first---31st三、 数词的用法" I5 f: t* R2 z7 d
1）倍数表示法
; @: Z7 v- n# ^# B3 ~8 C: H a. 主语+谓语+倍数（或分数）+ as + adj. + as& H9 I+ R" P% a* k3 o2 r
I have three times as many as you. 我有你三倍那么多。
8 ~3 W/ T7 @$ s2 V7 W- A b. 主语+谓语+倍数（分数）+ the size (amount，length…) of…7 N4 y, o- Y4 e |7 [5 p
The earth is 49 times the size of the moon. 地球是月球的49倍。' M. d# M4 `4 S: i- [+ I' K
c. 主语+谓语+倍数（分数）+ 形容词（副词）比较级+ than…
) R+ x4 O, `2 H1 j* T% @5 ]9 U The grain output is 8 percent higher this year than that of last year.) \) }8 n9 i; Y
今年比去年粮食产量增加8%。wｗw.ExamＷ.CoM
3 d1 ^/ E- A$ Y: A d. 还可以用by+倍数，表示增加多少倍$ o+ I8 n4 L2 H& O: W% q0 `/ {( j
The production of grain has been increased by four times this year.
1 o) a. S* U1 }$ i0 ~% b8 s 今年粮食产量增加了4倍。
( m( q6 w R6 g1 ^8 C+ w 2）分数表示法
. e ^4 J0 e, m4 C$ I1 ]! s5 H% L 构成：基数词代表分子，序数词代表分母。分子大于1时，分子的序数词用单数，分母序数词用复数：
; S0 A5 u4 b" d) S 1/3 one-third ； 3/37 three and three-sevenths. |
发表于 2012-8-14 10:21:44
