九年级英语数词学案.doc

复习学案 年级：九 科目： 英语 设计教师：
课题 数词
课时 1
中考考点：（1）考查基数词的编号
（2）考查基数词的写法
（3）考查hundred, thousand, million, billion 后加-s 的情况 （4）考查基数词与序数词的转化情况
（5）考查基数词与副词的情况。 一般以单项填空，单词拼写等题型进行数词方面的考查。

知识框架：一、基数词 1读英语中较长的数字 2 基数词的用法

二、序数词 1 序数词的变化规则 2 序数词的用法

三、分数的表达
复习知识：一、基数词
1.读英语中较长的数字。 先将数字从右往左每三位数用一个逗号隔开。 786→seven hundred and eighty-six 3，002，425→three million two thousand four hundred and twenty-five
但要注意：
（1）hundred, thousand, million当它们前面用了基数词，表示“几百、几千、几百万”时其后不能加s表示复数。 如：five hundred“五百”，不能写成five hundreds,
(2)hundred, thousand, million用来表示约数后，后与of连用，hundred, thousand, million后必须加s.如：hundreds of 数百，thousands of 数千，成千上万，millions of 数百万
2.基数词的用法
（1）表示人或事物数目多少。（2）表示编了号的东西，将基数词放在名词后。
（3）表示年份。（4）表示时间。（5）“数位名词复数+of短语”表示“数以……计的、成……上……的”。（6）“in the+年份（复数）”表示“在……世纪……所代”。
二、序数词
1.序数词的变化规则：
（1）一般在基数词的加th, 如：
four →fourth; seven → seventh; thirteen→thirteenth; hundred →hundredth.
(2)少数变化是不规则的，如：
one→first; two→second; three→ third; five→fifth; eight→eighth; nine→ninth; twelve→twelfth
(3)以y结尾的twenty等十位整数，变y为ie,再加th.如：
twenty→twentieth; thirty→thirtieth; seventy→seventieth.
(4)从二十一后的“第几十几”直到“第几百几十几”或“第几千几百几十几”只将个位数的基数词变为序数词即可。如：Twenty—two →twenty—second; one hundred and forty –five →one hundred and forty –fifth
2.序数词的用法
（1）编了号的事物用“序数词+名词”
（2）日期中的“日”可用序数词
（3）序数词前一般应用the,用a (an)时表示“又一、再一”。
三、分数的表达
（1）表示年龄，意思是“几十多岁”。如“三十几岁”，thirties ， 表示从30岁到39岁，“十几岁”是tenns, 表示13岁至19岁。如：in his twenties.二十多岁 in her teens. 十几岁。
（2）表示年代，如“20世纪80年代”写成1980s, 在30年代in the thirties.
(3)表示约数、不确定的数目。如：hundreds of 数百，thousands of 数千，分数表达法：
（1）分数的分子用基数词，分母用序数词。如：one fifth 五分之一；one tenth
（2）当分子大于1时，分母中的序数词应用复数。如：two thirds 三分之二；
（3）当分子是1时，可以用one, 也可以用a .如：a second (one second)
(4) 当分母是“2”或“4”时，可以用half和quarter代替。如：a half二分之一；a quarter 四分之一；three quarters 四分之三
典型例题：
1.Gina lives in ______, Mine is next to hers.
A. four room B. Four Room C. Room Four D. the room four
本题考查基数词用来编号，名词在前，数词在后，首字母都用大写。答案：C
2.------Excuse me, how many students are there in your art club?
------There are _______
A. twelve B. twelfth C. the twelfth
本题考查基数词表示数量。答案：A
3.The Huanghe River is the ______(第二)longest river in China.
解析：本题考查序数词的拼写，第二是second.
4.The______(第十二)lesson is very difficult for me.
解析：考查序数词的拼写，“第十二”是twelfth.
5.The ______letter in the word “develop”is “v”.
A. second B. third C. three D. two
解析：本题考查序数词表示顺序，“第三个字母是v”,选third.答案：B
6.---Shanghai has opened its ______TV channel (频道)that sends programs in foreign languages.
A. first B. a first C. the first
解析：考查序数词的用法。 Its是形容词性物主代词，序数词前不再加任何冠词。
答案：A
知识拓展：（由例题拓展的练习题）
1.Time is not enough for the work._____ people are needed, I think.
A Other two B. Only two C. Two more D. Two another
2.All the teachers live on _____floor.
A. the second B. two C. second
3._____is said that ____ tourists visit Geyuan Garden every day.
A. That; thousands of B. It; five thousand of
C. It; thousands of D. This; three thousand
4. _____soldiers and doctors have been in Wenchuan to help the people there.
A. Thousand of B. Two thousands C. Thousands of
5. You can see ____ if you go out at night.
A. million stars B. thousand of stars
C. hundreds stars D. millions of stars
6.The PRC was founded on _____
A. October 1st,1949 B. July 1st ,1921
C. August 1st ,1927 D. May 1st , 1922
7.-----It is 7:15
------Yes, it’s ____
A. a quarter past seven B. a quarter to eight
C. fifteen past seven o’clock D. seven fifteen o’clock.
8.—Can you write the number eighty –five thousand, six hundred and twenty-six?
----Yes, it is _____
A.856620 B.85626 C.58662 D.58626.
9_____of the girls in this school are fans of Li Yuchun.
A. Two fifths B. Two fifth C. One thirds D. Fifths two
归纳小结： 基数词、序数词的用法你能总结出来吗？序数词的变化规则是什么？另外，分数作主语，谓语动词的单、复数要根据分数后的名词确定，如果是不可数名词用单数，是可数名词用复数。如：
One third of the students in our class __________(去过)the Great Wall.
我们班三分之一的学生都去过长城。
Four fifths of the water__________(被喝) by the children.
五分之四的水都被孩子们喝了。
中考练兵：（精选的中考题）单项填空
1. Our school is only _______ walk from here.
A. five-minute B. five minute’s C. five minutes D. five minutes’
2. There are ________ days in a week.
A. the seven B. seventh C. the seventh D. seven
3.Please write down the new words in the text of ________.
A. Lesson Eleven B. the Lesson Eleven C. Lesson Eleven
4.----How old is Mary?
------________.
A. She’s very well B. She’s young
C. She’s fifteen D. She’s fifteenth
5. The water behind the Three Gorges Dam(三峡大坝) should be _________higher than downstream(下游)。
A. sixty-five meter B. sixty-fifth meter
C. sixty-five meters D. sixty-fifth meters
6.----How many teachers are there in your school?
-----__________, but I’m not sure.
A. Hundreds B. Hundred C. Hundreds of D. One hundred
7.Our summer holiday is coming. Two ________ the students in our school will go to the beach.
A. hundred B. hundreds C. hundred of D. hundreds of
8. There are _________ doctors and nurses working hard in that hospital.
A. thousand B. two thousand C. two thousands D. two thousands of
9. The number 2146 is read as _______.
A. two thousands and one hundred and forty and six
B. two thousand and a hundred and forty-six
C. two thousand, one hundred and forty-six
D. two thousands, one hundred, forty-six.
10.---What do you think of a war, Lin Tao?
-----I’ve no idea. But it’s fact that ________ people had to leave their hometown during the War on Irag.
A. three thousands B. thousand of
C. thousands of D. several thousands
11. Our teacher’s office is on ________.
A. the three floor B. Floor Third C. the third floor
12. Both of the two rulers are broken. I want to buy a _____ one.
A. three B. third C. forth D. 不填
作业：完成培优总复习上的数词练习。
错题纠正与反思：
归纳总结：（知识、方法）

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