数词
数词的概念:
表示数目多少或者顺序先后的词叫数词。
数词的分类:
1.表示数目多少的叫基数词;如:one一,two二,three三,four四。
2.表示顺序先后的词叫序数词。如:first第一,second第二,third第三。
基数词
基数词的构成:
1-12形各异
1 2 3 4 5 6 7 8 9 10 11 12
one two three four five six seven eight nine ten eleven twelve
13-19结尾均是“teen”
13 14 15 16 17 18 19
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
20-90整十数结尾均是“ty”
20 30 40 50 60 70 80 90
twenty thirty forty fifty sixty seventy eighty ninety
21-99在整十位的数词后加上个位的数词,中间加上连字符“-”
21 32 45 67 89
twenty-one thirty-two forty-five sixty-seven eighty-nine
101-999的构成要在百位数与十位数之间加and
158 one hundred and fifty-eight
369 three hundred and sixty-nine
457 four hundred and fifty-seven
743 seven hundred and forty-three
999 nine hundred and ninety-nine
1000以上的数字,从后向前数,每三位数加一“,”;
第一个“,”前为thousand(千),第二个“,”前为million(百万)……。
1,002 one thousand and two
12,300 twelve thousand and three hundred
378,456 three hundred and seventy-eight thousand four hundred and fifty-six
6,569,782 six million five hundred and sixty-nine thousand seven hundred and eighty-two
37,389,146 thirty-seven million three hundred and eighty-nine thousand one hundred and forty-six
基数词的用法:(有数字无s)
前有基数词时,hundred、thousand、million后不加s
如:There are seven hundred students in our school.在我们学校有七百个学生。
hundreds of成百上千的、thousands of成千上万的
如:There are thousands of trees on the farm.农场里有成千上万的树。
序数词
一、序数词的构成:
1.123特殊记
第一 first 1st
第二 second 2nd
第三 third 3rd
2.4-19由相应的基数词+th构成,但注意有特殊变化(fifth,eighth,ninth,twelfth)
第四 第五 第六 第七 第八 第九 第十 第十一 第十二
fourth fifth sixth seventh eighth ninth tenth eleventh twelfth
4th 5th 6th 7th 8th 9th 10th 11th 12th
3.20-90整十数,变y为ie,+th
第二十 第四十 第五十 第六十 第九十
twentieth fortieth fiftieth sixtieth ninetieth
20th 40th 50th 60th 90th
4.要是遇到第几十几的序数词时,只有个位数用序数词
第三十一 第四十二 第五十三 第六十五 第八十八 第九十九
thirty-first forty-second fifty-third sixty-fifth eighty-eighth ninety-ninth
31st 42nd 53rd 65th 88th 99th
5.百、千、万的序数词有hundred-hundredth,thousand-thousandth
第三百 three hundredth
第四千 four thousandth
二、序数词的用法:
1.序数词前一般要加定冠词the。
如:Our classroom is on the second floor.我们的教室在二楼。
2.序数词前有物主代词,指示代词或名词所有格修饰时,不能再用定冠词the。
如:David is her third son. David是她的第三个儿子。
3.形容词的最高级前可以使用序数词,表示“第……最……的”。
如:The Yellow River is the second longest river in China. 黄河是中国第二长河。
4.序数词前用不定冠词,表示“又一次,再一个”。
如:I have three books.Can you give me a fourth one
我有三本书了,你能再给我一本吗?
常见表达
时刻
顺读法 倒读法 (≤30用past,>30用to) 30分钟常用half;15分钟常用a quarter
7:00 seven o’clock /
8:15 eight fifteen a quarter past eight
9:25 nine twenty-five twenty-five past nine
10:30 ten thirty half past ten
11:46 eleven forty-six fourteen to twelve
12:50 twelve fifty ten to one(一点差十分)
二、日期
2月1号 the first of February Feb.1st
3月8号 the eighth of March Mar.8th
9月12号 the twelfth of September Sept.12th
10月23号 the twenty-third of October Oct.23rd
12月30号 the thirtieth of December Dec.30th
三、年份
1984年 nineteen eighty-four
2008年 two thousand and eight
2023年 twenty twenty-three
四、小数的表达 (小数点用point表示,零读作zero或o)
6.1 six point one
12.13 twelve point thirteen
56.08 fifty-six point zero eight
五、分数的表达
1.分数由分子和分母组成。通常,分子用基数词,分母用序数词,分子大于1时,分母要用序数词复数形式。
1/2 1/4 3/4 2/5 3/8
one second /(a/one) half one fourth /a quarter three fourths / three quarters two fifths three eighths
表示带分数时,应在分数之前加基数词和and。
three and one third
one and two fifths
分数在句子中作主语的时候,谓语动词的单、复数形式由of后面的名词来决定。如果of后面的名词是可数名词的复数形式,谓语动词用复数形式;如果of后面的名词是不可数名词,谓语动词用第三人称单数形式。
如:It is said that two thirds of information on the Internet is not true.
据说互联网上三分之二的信息是不真实的。
Two fifths of the students in my class are from the village.
我们班五分之二的学生来自那个村子。
六、百分数的表达
百分数由“基数词(或小数)+percent(%)”表示。
5% five percent
86% eighty-six percent
倍数的表达
在英语中,表示倍数时,两倍用twice或double;三倍或三倍以上用“基数词+times”。表示倍数常用“倍数+比较级+than” 结构:
Her house is twice bigger than yours.她的房子比你的房子大两倍。
This river is three times longer than that one.这条河比那条河长三倍。
八、编号的表达
1.序号的表示方法:Number 6=No.6 第六号
2.书页的表示方法:Page 6= P6 第六页
3.课数的表示方法:Lesson six=the sixth lesson 第六课
4.年级的表示方法:Grade six 六年级
5.班级的表示方法:Class Six 六班
6.房间的表示方法:Room 301 301房间
九、特别补充
1.“in one’s +基数词整十位数的复数”表示的是年龄,意为“在某人几十多岁时”。
如:His works were successful, and he became rich and famous in his twenties.
他的作品很成功,20多岁时他就变得富有且出名了。
2.表达年代应用“in the+带有整十的年份+-s或-’s”形式,
如:Yuan Longping was born in Beijing in the 1930s.
袁隆平在二十世纪三十年代出生于北京。
【Essential exercise】
一、单项选择。
1. About of the students like keeping diaries in English in our class.
A. two fifth B. two fifths C. second five D. two five
2. David Beckham has ______ children. Brooklyn Beckham is his ______ son.
A. third, first, B. three, one C. three, first D. third, one
3. It's never too old to learn. Karl Marx began to learn English in his ______.
A. the fiftieth B. fiftieth C. fifty D. fifties
4. In his ________,Wilson returned to his hometown and began to teach.
A. thirty B. thirties C. thirtieth
5. ______ month of the year is May.
A. Two B. The second C. Five D. The fifth
6. I live in Room 403, Sam lives in the room right above mine, on the _______ floor.
A.third B.three C.fifth D.five
7. Basketball is so exciting that _______ people play it for fun.
A. million B. two millions C. million of D. millions of
8. Boys and girls, please turn to Page _______ and look at the _______ picture.
A.Fifth; five B.Five; five C.Fifth; fifth D.Five; fifth
9. Helen loves reading. She has read _______ books this month.
A. five B. fifth C. five of D. fifth of
10.It’s my ________ time to come to the bookstore this month because most of the books in it are my favorite.
A.forth B.four C.fourth
11.The ______biggest earthquakes in Nepal (尼泊尔) have killed more than 8,000 people.
A.two B.second C.twice
12. We are going on holiday in the _______ week of July.
A. two B. twice C. second
13. _______ of the land in that district is covered with trees and grass.
A. Fifth two B. Two fifth C. Fifth second D. Two fifths
14.-Have you heard about Zhangjiajie Glass Footbridge
-Of course, it’s built over a canyon in the Zhangjiajie National Forest Park.
300-meter-deep B. 300-meters-deep C. 300 meter deep D. 300-meters deep
15.Every year, books are donated to the children in poor areas.
A. Million B. millions C. millions of D. million of
16.-Mum, of my classmates glasses.
-Oh, my god. You need to protect your eyes well.
A. three-fourths; wears B. three-fourth; wear
C. three-fourth; wears D.three-fourths; wear
17.-Mr Black looks very excited.
-Yes. 90 percent of the students already come to his birthday party.
have; seventieth B. have; seventies
C. has; seventies D. has; seventieth
二、用括号中所给的词的适当形式填空。
1. My sister is going to have a party for her _______ (twelve) birthday.
2. You can see ______ (thousand) of trees around our village.
3. Four ______ (seven) of the people are going to plant trees on the hill tomorrow
4. There are ______ (hundred) of people dancing at the square after supper.
5. His______ (one) name is Mike. But I don’t know his family name.
6. I am in my (three)year in this middle school.全品中考
7. He plans to take ______ (second)months for his climb.
8. Alex is ______ years old and is taken good care of in the kindergarten.(fourth)
三、词语运用。
1.The old man started to learn how to surf the Internet in his ________(eighty).
2. She is nineteen, and next year she is going to celebrate her ________(twenty) birthday.
3. There are five people in Dale’s family. They live on the ________(nine) floor.
4. When my father was in his ________ (thirty), he became a doctor in a big hospital.
5.My sister loves cats very much. She keeps four cats now but still wants to buy a________(five) one.
6.I still remembered that she made friends with us when we met for the ________(one) time.
7. I have read six English novels in the past months and Little Women is the ________(seven) one I am going to read.
8. As I have more books, I will need a bookcase ________(two) as big as the one I have had.
9. The Lantern Festival is celebrated on the ________(fifteen) day of the first month.
四、选择填空。
10. We gave away________ books to the school library last year.
A. six thousands B. six thousand C. six thousands of D. six thousand of
11. —Is Dongjin High speed Railway Station the ________largest in Hubei Province
—Yes, of course. It’s just a little smaller than the largest one in Wuhan.
A. first B. second C. third D. fourth
12. Today is my little sister’s ________ birthday. My family will get together to celebrate it.
A. eleven B. eleventh C. the eleventh D. the eleven
13. Suppose you have eleven pencils in your hand, and your sister asks for three. Then you have ________ pens left.
A. fourteen B. eleven C. eight D. three
14. A dictionary costs 125 yuan, and a storybook is 25 yuan cheaper than a dictionary. How much are two dictionaries and a storybook
A. 350 B. 300 C. 275 D. 325
Vocabulary.
四会单词&词组
1 Grade Nine [ɡre d] 九年级
2 western [ west n] adj.西方的
3 forward [ f w d] adv.向前,前进
4 unlucky [ n l ki] adj.不幸运的
5 solve [s lv] vt.解决,处理
6 afraid [ fre d] adj.害怕的
7 factory [ f ktri] n.工厂
8 dangerous [ de nd r s] adj.危险的
9 information [ nf me n] n.信息,资料
10 celebrate [ sel bre t] v.庆祝
三会单词
1 million [ m lj n] n.百万元
2 billion [ b lj n] n.千万元
3 earthquake [ θkwe k] n.地震
4 district [ d str kt] n.区,地区
5 kindergarten [ k nd ɡɑ tn] n.幼儿园
6 province [ pr v ns] n.省份
7 general manager [ d enr l m n d r] 总经理
【Homework】
一、单项选择。
1. -Good morning, Madam. Can I help you
-Sure, I’d like ________for cooking vegetables.
A. two cups of tea B. three pieces of bread
C. five kilos of oil D. four bottles of milk
2. Nearly _______of the earth _______ covered by sea.
A. three fourth,is B. three fourths,is
C. three fourth,are D. three fourths,are
3. -We’ll be back for our school’s ____anniversary ceremony.
-I see. That means you’ll have a get-together with your classmates in _______ years.
A. fifteen,seven B. fifteenth,seven C. fifteen,seventh D. fifteenth,seventh
4. -Which class won the match in the end
-I’m not quite sure. Perhaps _________did.
A. Class Third B. Third Class C. Class Three D. Three Class
5. There are ________ people in the supermarket. It’s so crowded.
A. hundred B. hundreds C. hundred of D. hundreds of
6. The number of the students in our school is about nine ______. ______ of them are boys.
A. hundred; Two thirds B. hundred; Two third
C. hundreds; Two thirds D. hundreds; Two third
7. My brother is a ______ boy and he can’t go to school now.
A. four years B. four-year-old
C. four-years-old D. four years old
8. It is said that the big fish in the lake is about ______.
A. four meters long B. four meter long
C. four-meter long D. four-meters long
9. -What’s the date today -It is _______.
A. March the eighth B. March eight C. eight March D. eighth March
10.-Where does your English teacher live
-He lives on _____ floor of that red building..
A. five B. fifth C. the fifth D. the five
11. This is my _____time to play the piano at our school.
A. second B. two C. seconds D. the two
12. Our English teacher tells us that the _____day of the week is Sunday.
A. seven B. seventh C. first D. one
13. There are _____days in a year.
A. three hundreds sixty-five B. three hundred and sixty-five
C. three hundred and sixty five D. three hundreds and sixty five
14. My pen pal, Jack, is in_______ in a high school in American.
A. Three Class, One Grade B. Class Three, Grade One
C. Grade One, Class Three D. One Grade, Three Class
15. There are ______months in a year and December is the ______month of the year.
A. twelve; twelve B. twelve; twelfth C. twelfth; twelve D. twelfth; twelfth
二、用括号中所给的词的适当形式填空。
I have tried three times, and the teacher asks me to have a (four) try.
Even a child knows September is the (nine) month of a year.
In her late (forty), she became the general manager of a company.
Yesterday was my daughter’s (two) birthday.
Climb up to the (eleven) floor, and you can enjoy a better view.
The number of the pages in this book is five (hundred).
Two (five) of the land in that district is covered with trees and flowers.
The (nineteen) World Book Day was on April 23,2014.
He has already tried a (three) time and I’m sure he’ll make it.
Mike goes to see his grandparents (one) a week.