牛津上海版八年级第一学期8A数词专题专项讲解及练习教案

1、数词专题I .数词英语的数词可分为基数词和序数词两大类。基数词表示的是人或事物的 个数，而序数词表示的是这些数目的 顺序。一、基数词1 .表示数目的词称为基数词，下面是最常用的基数词1 one11 eleven100 one(a) hundred 百2 two12 twelve20 twenty1 000 one(a) thousand 千3 three13 thirteen30 thirty10 000 ten thousand 万4 four14 fourteen40 forty100 000 one(a) hundred thousand 十万5 five15 fifteen50 fif

2、ty1 000 000 one(a) million 白力6 six16 sixteen60 sixty7 seven17 seventeen70 seventy8 eight18 eighteen80 eighty9 nine19 nineteen90 ninety10 ten2 .在21-99之间的非整十位数的基数词要在十位和个位之间加连字符 23: twenty -threeand。3. 三位数的基数词要在百位和十位(若无十位则和各位)之间加364 ： three hundred and sixty -four 906: nine hundred and six4. 1,000 以上的数

3、字，从后向前，每三位加一个逗号“， ”依次为 thousand, million, billion, 然后每一小段按百位、十位、各位的顺序依次表示。478 ， 650 ， 542 ： four hundred and seventy-eight million, six hundred and fifty thousand ,five hundred and forty -two.5. hundred ,thousand ,million 等词前有具体数词修饰时， 要用单数。 后面与 of 短语连用时，则要用复数。且前面不再加具体数目，但可用 several 等词修饰。five thousan

4、d students 五千名学生two million people 两百万人undreds of people 成百上千的人several thousands of visitors 上千的旅客6. 表达“几个半用 基数词+and+a half+名词或基数词 +名词+and +a half。Two and a half months/two months and a half 两个半月7. 表示 “几十年代”或“几十岁” 。in the 1870s(1870s)在 19 世纪 70 年代 in her twenties 在她二十多岁时8. “基数词 +名词”作定语时，两者间要加连字符号，名词

5、用单数形式。a three -week holiday3 周的假期9. 门牌号、电话号码及邮政编码等用基数词。My phone number is 3980665. 我的电话号码是3980665。three nine eight zero six six/double six five.)【课堂小练】I . Choose the best answer.C. Thirty; twenty D. Forty; fiftyB. six hundreds and fifty -twoD. six hundred, fifty and two1. and makes eighty.A. Twenty;

6、 forty B. Thirty; fifty2. The road is over metres long.A. six hundred and fifty -twoC. six hundred, fifty -two3. Three the students went to the zoo yesterday. They had a good time in the zoo.A. hundredB. hundred ofC. hundreds ofD. hundreds4. 200,918,765 can be read in English .A. two hundred million

7、 nine hundred and eighteen thousand seven hundred and sixty -fiveB. two hundred nine hundred and tighten thousand seven hundred and sixty -fiveC. two hundred million nine hundred eighteen thousand seven hundred sixty -fiveD. two hundred million nine hundred and eighteen thousand seven hundred sixty

8、-five5. girls tool part in the Super Girl competition but only a few of them succeed.A. One millionB. Thousands and millionsC. Millions ofD. Two million6. He said he would stay in Beijing for .A. two and half monthsB. two and a half monthC. two months and a halfD. two months and halfA. the 1980s; tw

9、enty7. I went to college in and began to work in .8. the 1980 s; my twentiesC. 1980; my twentyD. 1980s; my twentieth8. The brave young man is going to swim across a channel.A. 80-metre-wide B. 80-metres-wide C. 80 metre wide D. 80 metres wide9. The table is wide.A. one and one half feetB. one and on

10、e half footC. one and half a footD. one and a half feet10. The Sutong Highway Bridge, a bridge, is already open to traffic.A. 32 kilometre longB. 32-kilometre -longC. 32 kilometres longD. 32-kilometres -long二、序数词1 .序数词的构成。巧学妙记：基变序，有规律，末尾加上-th (sixth, seventeenth); 一二三特殊记，词尾字母t,d,d(first,second,third

11、);八省 t 来九去,f 替 ve(eighth, ninth, fifth,twelfth); 结尾是 y 变 ie,词尾再 加-th(fortieth);若遇多位数词，只让各位变成序( twenty -first) o2 .序数词前一般要用定冠词the.This is the second longest river here.这是这里的第二长河。He is always the first student to come to school.他总是第一个到校的学生。3 .序数词的意义为“又一，再一”时，其前要加冠词a/an ,不用the.A:Ive tried twice.我已经试了两次

12、了。B: Youd better try a third time.你最好再试一次。4 .序数词前有形容词性物主代词等限定词时，不用冠词。Liu Zhong is in his third year at No.lMiddle School.刘钟在一中读三年级。China exploded its first atom bomb in October, 1964.1964 年 10 月中国第一颗原子弹爆炸。5 .序数词与名词构成复合形容词时，其前不加定冠词。He bought a second -hand car.他买了辆二手车。6 .在某些固定搭配中，序数词前不用冠词。at first 起初

13、 every third day 每隔 3 天 first of all 首先 win first place 获得冠军7 .日期一般用序数词表示。2 月 20 日 February 20th (=February the twentieth) 5 月 1 日 May 1st(=May the first)8 .分数的表达法。分子用基数词，分母用序数词，分子大于1时，分母用复数。1/6 : one sixth 3/4: three fourths(=three quarters)知识补充分数修饰的名词作主语时，谓语动词根据其后面的名词确定单复数。Two thirds of the work i

14、s already done.三分之二的工作已经完成了。Four fifths of them have finished their homework.他们之中有五分之四的人完成作业了。9 .编号可用基数词或序数词表示。基数词位于名词后，序数词位于名词前，并加定冠词the。6 路公共7车：But NO.6/the No.6 Bus第 8 单元：Unit Eight/the Eighth Unit第一章：Chapter One /the First Chapter第 2 部分：Section Two/the Second Section【课堂小练】I . Choose the best ans

15、wer.1. Qinghai-Tibet Railway is the railway that connects Tibet with the other parts of China.A. secondB. firstC. thirdD. four2. Zhongshan Road is road in our city.A. the two widestB. a second widestC. the second widest D. the second wide3. Although I failed fourtimes, my father encouraged me to hav

16、e fifth try.A./B. theC. anD. a4. He has every day off.A. threeB. thirdC. threesD. threeth5. A: How old is your daughter?8: . We had a special party for her birthday last week.A. Ninth; ninthB. Nine; nineC. Ninth; nineD. Nine; ninth6. We have sixty students in our class. ofthem are girls.A. Two third

17、B. Two threeC. Second thirdD. Two thirds7. Now Children, please turn to page and look at the picture.A. twenty -three; fifthB. twenty -three; fiveC. twenty -third; fifthD. twenty -third; five8. A: Shanghai has opened its TV channel that sends programs in foreign languages.8: Great! I can improve my

18、English over it.A. firstB. a firstC. the firstD. an first9. It was the time for China to send a manned spaceship into the sky, but it was the time for Fei Junlong and Nie Haisheng to go to the space.A. first; firstB. second; firstC. second; second D. first; second10. A: It s 8:15 now.B: Yes, it ，s n

19、ow.A. eight fiftyB. fifteen to eight C. fifteen past eight D. forty -five to nine课堂练习I . Choose the best answer （选择）1. About films were shown during the 5th International Film Festival.A. two hundred of B. two hundreds of C. two hundredD. twohundreds2. We ll have a holiday. What about going to the W

20、est Lake?A. two daysB. two-dayC. two-daysD. two-days 3. Now children, turn to page and look at picture in Lesson Two.A .twentieth one B. twenty oneC. twentieth therstD.twenty the first4. During the seven-day May Day holidays, families went sightseeing.A. thousandB. thousandsC. thousands and thousand

21、s D.thousands of5. I ve read sports news about the F1 race today.A. twoB. piecesC. two piecesD. two piecesof6. During World War ii, a Jewish（犹太的）lady was protected by a local family in Shanghai in herA. fiftiesB. fiftyC. fiftiethD. the fiftieth7. 一 How many typewriters do you need?-I need.A. three o

22、nesB. threeC. the threeD. themthree8. About said that they enjoyed those books very much.A. four fifths studentsB. four fifth of the studentsC. four fifths of studentsD. four fifths of the students9. 一 How much does the parcel weigh?Just a minute. Ill weigh it. It weighs.A. one and half a kilogramB.

23、 one and a half kilogramC. one kilogram and halfD. one kilogram and a half10. How soon will you finish typing the letter?A. one or two minuteB. one minute or twoC. a minute or twoD. a or two minutes11. Well spend the summer holidays in the mountain miles away.A. several hundredsB. hundreds ofC. seve

24、ral hundred ofD. hundred of12. 一 He must be. Yes, hes still strong like a young man.C. over sixtiesA. in his sixtiesB. in his sixtyD. sixty-year-old13. As customer of the supermarket, Mr. Li was given a nice present.A. a thousandB. the thousandthC. the thousandsD. thousandth14. Three students of our

25、 class have been chosen the top students of the year. And I am one ofA. threeB. the threeC. thirdD. the third15. Have you found the six coins you lost yesterday?-I have found, but I cant find .A. five, the sixthB. five, sixC. fifths, sixD. fifth, sixth16. Next Sunday will be Janes.birthday.A. thirty

26、-ninthB. thirtieth-ninthC. thirtieth-nineD. thirty-nine17. Well have to enter the stadium atA. the Gate FourB. Gate FourC. Fourth GateD. Gate Fourth18. My daughter likes to ask questions about anything she sees.A. six-years-oldB. six years oldC. six-year-oldD. six-year old19. Whats on ?Sorry, I dont

27、 know. Why not look it up in TV Guide?D. 20th ChannelA. Channel 20B. 20 ChannelC. Channel 20th20. The Yellow River islongest river in China.A. twoB. the twoC. the secondD. secondn . C omplete the sentences with the given words in their proper forms.1. Mum made a big chocolate cake for little Kevin b

28、irthday. (six)2. We still need more chairs for the meeting room. (ninth).3. Eric, the son of the family, has a special interest in physics. (five)4. Alex is years old and is taken care of in the kindergarten. (fourth)5. The young lady teaches my son to play the piano a week. (two)6. During World war

29、 II, a Jewish ( 犹太的)lady was protected by a local family in Shanghai inher. (fifty)7. We saw several people gather in the streets. (hundred)8. Although of the earth is covered with water, still we shouldn t waste any of it.(second three)9. Many guests were invited to my mother birthday party last Su

30、nday. She really had a wonderful time. (forty)10. of people come to the Bund to enjoy the night views on our National Day. (Thousand)11. It s unforgettable to celebrate our birthday in Liuhe. (fourteen)12. The woman next door took up the piano -playing in her. (sixty)13. The automobile industry play

31、ed an important role in America throughout the century. (twenty)14. The students usually have a mid-exam in the week of the term. (ten)15. Mrs. Brown has bought a new flat in this building and it s orethetj floor.16. The Olympic Games were held in London in 2012. (thirty)17. The boy was the one to g

32、et to the school playground. (four)课后作业A. Choose the best answer.On a Friday night, a poor young artist stood at the gate of the New York railway station, playing his violin. The music was so great that many people stopped to put some money into the hat of the young man.The next day, the young artis

33、t came to the same place, and put his hat on the ground gracefully. Different from the day before, he took out a large piece of paper and laid it under his hat. Then he began to play the violin. It sounded more pleasant than ever.Soon he was surrounded by people who were attracted by the words on th

34、at paper. It said, Last night, a gentleman named George Sang put an important thing into my hat by mistake. Please come to claim it soon.After about half an hour, a middle -aged man rushed through the crowd to the violinist and said, Yes, its you. I knew that you were an honest man and would certain

35、ly come here. The young violinist asked calmly, Are you Mr George Sang? The man nodded. The violinist asked, Did you lose something? Its a lottery ticket, said the man. The violinist took out a lottery ticket on which George Sangs name was seen. Is it? he asked. George nodded and took the lottery ti

36、cket and kissed it, then danced with the violinist.The violinist was a student at an arts college and had planned to attend advanced studies in Vienna. Later his classmate asked the violinist, At that time you needed money to pay the tuition and you had to play the violin in the railway station ever

37、y day to make money. Why didnt you keep the lottery ticket for yourself?The violinist said, Although I dont have much money, I live happily. But if I lose honesty I wont be happy forever. Through our lives, we can gain a lot and lose so much. But being honest should always be with us.生词：gracefully 优

38、美地，斯文地claim 认领()1. The first paragraph tells us.A. the young artist waited for the train to ViennaB. the young artist played the violin to make some moneyC. the young artist came to buy a train ticket to ViennaD. the young artist walked around the New York railway station()2. From the second paragra

39、ph we know.A. he came to another place the next dayB. he played the violin better the next dayC. he sat on a large piece of paper and played the violinD. he laid a large piece of paper under his hat()3. The third paragraph mainly talks about.A. he asked a gentleman named George Sang to claim his hat

40、B. he asked a gentleman named George Sang to claim his important thingC. he was a lottery ticket and he needed to find the ownerD. he was a lottery ticket and he wanted to give it to George Sang()4. The fourth paragraphs mainly tells.A. he thought the lottery ticket was worth nothingB. he didnt give

41、 the lottery ticket to George SangC. he didnt take the lottery ticket for himselfD. George Sang kissed the young artist and danced with him()5. From the last paragraph we know.A. we should share with others if we find something valuableB. we should know the importance of honesty and lead a happy lif

42、eC. keep the lottery if you find oneD. playing the violin could make you feel happyB. Fill in the blanks with proper words.Girls want to look their very best at all times, especially when they show up in particular occasions. They dont want to spend hours making themselves up in front of the m 1, but still want to look like a movie star- as if they were born that way.It seems that everyone has a different hairstyle. The a 2 of long hair are that it can be changed into so many different styles. You can wear your hair up in many k 3 of ways.