英语复习数词精讲

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(1)表示年代:the+逢十数字的复数
20世纪60年代the 1960’s(1960s)或the nineteen-sixties
19世纪80年代the 1880’s(1980s)或the eighteen-eighties
(2)表示年龄段(in one’s+整十的复数形式)
在我50多岁时 in my fifties        在他30多岁时 in his thirties
(3) one week or two = one or two weeks
a year or two = one or two years
one day or two = one or two days
one day and a half =one and a half days
one hour and a half =one and a half hours
(4)倍数的表示法
①A is …times as + adj .as B
②A is …times 比较级 than B
③A is …times the size (length, width, depth, height)of B
如:Our classroom is three times as big as yours.
Our classroom is twice bigger than yours.
我们的教室时你们的三倍大 
This river is three times the width of that one.
这条河是那条河的三倍宽。
(5)hundred, thousand, million, dozen, score 作定语表示确切①的数目时一般用单数形式。Hundreds(thousands, millions, scores, dozens)+of…表示“许多”的意思。
(6)序数词前面常用定冠词the ,但是有时可以不用定冠词a/an,表示“又一次”,“再一次”的意思。如:He came to our school a third time yesterday.
   昨天他再一次来到我们学校。(以前来过两次)。
Try it a third time, please!请再试一次(已经试过两次了)
(7)带有数词的名词用作定语时,一般用单数形式。
①一个五岁的小男孩a five-year-old boy
②一张五英镑的钞票a five-pound note
③一座800米长的桥an eight-hundred-metre-long bridge
(8)编号既可以用序数词也可以用基数词。
The tenth lesson, Lessen Ten         the fifth page, Page 50
有的编号习惯用基数词。
Room 302 (room three “o” two)        Bus No.15 (bus number fifteen)
(9) 年、月、日的表示:(年用基数词,日用序数词)
美国用: Month Date, Year的顺序表示
英国用: Date Month, Year的顺序表示
如:1995年5月15日: May 15, 1995/May 15th, 1995/ 15th   May, 1995
(10)时刻的表示法:
方法一: 30分以下用 “to”。 如:
6:12   twelve past six     7:30 half past seven    9:50 ten to ten 
方法二:依次读出时,分别用基数词形式即可。 如: 
6:12 six twelve      7:30 seven thirty      9:50 nine fifty
注:AM/a.m., PM/p.m. 分别表示上午、下午。
典型例题
例1  Shortly after the accident,_______ people were sent to the stop to keep order.
A. hundreds of       B. hundreds        C. hundred of        D. hundred
【答案】A
【解析】hundreds of …表示“许多”
例2  He looked quite healthy though he was______.
A. in seventy       B. in his seventies       C. at seventies      D. at the age seventy
【答案】B
【解析】in his seventies 在他七十多岁时
例3  China is______ larger than the United States.
A. one six         B. one sixth      C. one sixes        D. one sixths
【答案】B
【解析】one sixth 六分之一
例4  The damage(损坏)of the books is about_______.
A. three seventh      B. threes seventh      C. three-seventh    D. three sevenths
【答案】D
【解析】three sevenths 七分之三
例5  The editor told the newsman to write_______ report.
A. a two-thousand-words               B. a two-thousand-words  
C. a two thousand words               D. a two-thousand-word
【答案】D
【解析】a two-thousand-word 名词、数词合成作定语时,名词只能用单数,且合成词的各词间要用连字符号。
 
(1)表示年代:the+逢十数字的复数
20世纪60年代the 1960’s(1960s)或the nineteen-sixties
19世纪80年代the 1880’s(1980s)或the eighteen-eighties
(2)表示年龄段(in one’s+整十的复数形式)
在我50多岁时 in my fifties        在他30多岁时 in his thirties
(3) one week or two = one or two weeks
a year or two = one or two years
one day or two = one or two days
one day and a half =one and a half days
one hour and a half =one and a half hours
(4)倍数的表示法
①A is …times as + adj .as B
②A is …times 比较级 than B
③A is …times the size (length, width, depth, height)of B
如:Our classroom is three times as big as yours.
Our classroom is twice bigger than yours.
我们的教室时你们的三倍大 
This river is three times the width of that one.
这条河是那条河的三倍宽。
(5)hundred, thousand, million, dozen, score 作定语表示确切①的数目时一般用单数形式。Hundreds(thousands, millions, scores, dozens)+of…表示“许多”的意思。
(6)序数词前面常用定冠词the ,但是有时可以不用定冠词a/an,表示“又一次”,“再一次”的意思。如:He came to our school a third time yesterday.
   昨天他再一次来到我们学校。(以前来过两次)。
Try it a third time, please!请再试一次(已经试过两次了)
(7)带有数词的名词用作定语时,一般用单数形式。
①一个五岁的小男孩a five-year-old boy
②一张五英镑的钞票a five-pound note
③一座800米长的桥an eight-hundred-metre-long bridge
(8)编号既可以用序数词也可以用基数词。
The tenth lesson, Lessen Ten         the fifth page, Page 50
有的编号习惯用基数词。
Room 302 (room three “o” two)        Bus No.15 (bus number fifteen)
(9) 年、月、日的表示:(年用基数词,日用序数词)
美国用: Month Date, Year的顺序表示
英国用: Date Month, Year的顺序表示
如:1995年5月15日: May 15, 1995/May 15th, 1995/ 15th   May, 1995
(10)时刻的表示法:
方法一: 30分以下用 “to”。 如:
6:12   twelve past six     7:30 half past seven    9:50 ten to ten 
方法二:依次读出时,分别用基数词形式即可。 如: 
6:12 six twelve      7:30 seven thirty      9:50 nine fifty
注:AM/a.m., PM/p.m. 分别表示上午、下午。
典型例题
例1  Shortly after the accident,_______ people were sent to the stop to keep order.
A. hundreds of       B. hundreds        C. hundred of        D. hundred
【答案】A
【解析】hundreds of …表示“许多”
例2  He looked quite healthy though he was______.
A. in seventy       B. in his seventies       C. at seventies      D. at the age seventy
【答案】B
【解析】in his seventies 在他七十多岁时
例3  China is______ larger than the United States.
A. one six         B. one sixth      C. one sixes        D. one sixths
【答案】B
【解析】one sixth 六分之一
例4  The damage(损坏)of the books is about_______.
A. three seventh      B. threes seventh      C. three-seventh    D. three sevenths
【答案】D
【解析】three sevenths 七分之三
例5  The editor told the newsman to write_______ report.
A. a two-thousand-words               B. a two-thousand-words  
C. a two thousand words               D. a two-thousand-word
【答案】D
【解析】a two-thousand-word 名词、数词合成作定语时,名词只能用单数,且合成词的各词间要用连字符号。