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<p>数词专项复习
英语中的数词包括基数词和序数词两大类，为了便于同学们系统地复习数词，现就小学阶段数词的主要内容作以下归纳。
一、基本构成
(一)基数词（表示几）
1.1—12的基数词是独立的单词，即： one，two，three，four，five，six，seven，eight， nine，ten，eleven，twelve。
2.13—19的基数词以-teen结尾，但13，15，18较特殊， 13—thirteen 15—fifteen 18—eighteen。
3.20—90的整十位均以-ty结尾。但20，30，40，50，80较特殊， 20—twenty， 30—thirty， 40—forty ，50—fifty ，80—eighty。
4.十位数与个位数之间要加连字符号“-”，如：28 twenty-eight，96 ninety-six。
5.百位和十位(若无十位则和个位)之间加and，如：148—one hundred and forty-eight ，406—four hundred and six。
6.hundred(百)，thousand(千)，等前面即使有具体的数词，也不能在它们的后面加s。如：600—six hundred，
(二)序数词——由基数词转变而来，表示“这是第几个”
1.口诀巧记基数词变序数词：
“一、二、三，特殊记， （第一first 第二second第三third）
八去“t”，九去“e”， （eight—eighth nine—ninth）
“ve”要用“f”替， （five—fifth，twelve—twelfth）
见y变成i和e，词尾加上th（twenty—twentieth，forty—fortieth）
若是遇到几十几，只变个位就可以。（twenty-five—twenty-fifth）
2. 其余情况均在基数词后加th
3.序数词有时用缩写形式：
First 缩写 1st, twenty—second 缩写 22th.
二、基本用法
(一)基数词的基本用法
用基数词来修饰可数名词时，一定别忘了用该名词的复数形式。
如：十八个男孩 eighteen boys
(二)序数词的基本用法
1.序数词前面一般要加定冠词the(或物主代词)：
Autumn is the third season in a year.
2.如果数字较长，序数词总避免使用，而且读的方法也常常简化：
第201房间： Room 201 第319页： page 319
3. 在谈编了号的东西时，我们可以用基数词表示顺序：
the first part------part one
三、特殊数字的表示法
(一)年 月 日表示法
1.年代前用 in.
( in ) 1905 读作(in ) nineteen and five
( in ) 1800 读作( in ) eighteen hundred
2.月份开头第一个字母须大写，表示“在某月”时，月份前面用 in。
( in ) January Jan. ( in ) March Mar. ( in ) December Dec.
3. 日期 用序数词(前需要加the)表示； “ 在某日”，前面用介词on.
( on ) October the first
4. 某年 某月 某日
in Sep. 1954
on Oct. 1, 1949(读作on October the first, nineteen forty-nine)
(二)时刻表示法
1.在具体时刻前通常用at。如： ( at ) six or six o’clock
2.如说几点几分，常将时和分钟分别读出来，如：7：40读作seven forty
注:上午可以用am表示,下午用pm表示，例如：9.50am 11.05pm
(三)一些数学加减的读法：
3+8=11 three plus eight is eleven. 9-7=2 nine minus seven is two.
专项练习题
一、英汉互译
第六课 _______________20个鸡蛋______________6月2日_______________
on March 20,2004 __________seven thirty________ 96把椅子 ___________
No. 5 Middle School ________6：40 ________________ four times ___________
二、把下列基数词改成序数词。
one______two______three______nine______fourteen______twenty______
thirty-five______ five______ eight______twelve______ forty-one
三、选择题
1. We are going to learn _____ this term.
A. book six B. six book C. the book six D. Book Six
2. Jenny was born (出生) __________.
A. on July 10, 1987 B. in July 10, 1987 C. in 1987, July 10 D. on 1987
3. Autumn is _____ season in a year.
A. the fourth B. the third C. a third D. the threeth
4. There are _______ days in a year.
A. three hundreds sixty-five B. three hundreds and sixty-five
C. three hundred sixty-five D. three hundred and sixty-five
5. There are _______students in our school.
A. eight hundreds and forty-six B. eight hundred and forty-six
C. eight hundred forty-six
6. My brother is in______.
A. Three Class, One Grade B. Class Three, Grade One
C. Grade One, Class Three D. class three, grade one
7. Please turn to ________ . Let’s read the text.
A. Page two B. the page two C. second page D. page second
8．Danny lives in __________．
A．room 404 B．Room 404 C．404 room D．404 Room
9．—What’s the date today? — ___________
A．It’s Saturday B．It’s July C．It’s fine D．It’s July 15
10．—What time do you get up every day?
A．It’s seven o’clock B．Seven o’clock time
C．At seven D．On seven
11.My home is about away from the school.
A. three hundred metre B. three hundreds metres
C. three hundred metres D. three hundred metre
12.We are learning now.
A.the twenty-first lesson B.Lesson Twenty-first
C.the 21th lesson D.Lesson 21 st
13.This is her birthday, I think.
A.twenty B.twentieth C.the twentieth D.the twenty’s
14.September is Teachers’Day.
A.the ten B the tenth C.the ten’s
15. My grandmother is_____ old.
A. seventieth B. seventy year
C. seventy years D. seventies
16. Monday is the second day, and________.
A. Tuesday is the fourth B. Thursday is fifth
C. the second day is Tuesday D. the second day is Thursday
17. There are ________months in a year. December is the ________month of the year.
A. twelve; twelve B. twelve; twelfth C. twelfth; twelve D. twelve; twelveth
18. What’s the date today? It is ________.
A. Friday B. time to go C. cloudy D. June 4th
19. What is five and eight?
A. Twelve B. Thirteen C. Fourteen D. Fifteen
四、根据句意和有关常识，用英文数词填空。
1. Fifty-one plus thirty-eight is ___________.
2. There are ______________ days in a week（星期）。
3. W is __________________ letter in the alphabet(字母表).
4. Thirty divided by（除以）five is ____________
5、Bill is （14）years old , he is in Class （2）Grade （6）.
6、My birthday is on the （3）of March .
7、September is the （9）month in a year .
8、Which boy is thinner , the （1）one or the （2）one ?
9、There are （55）students in our class .
10. We have_______（12）months in a year.December is the _________（12）one.
11. This is my________（1）bag.
12. My birthday is Dec.________（21）.
13. I have________（3）books. I like my________（3） book.</p>
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