数词易错知识点.doc

英才 郭老师英语六年级优才英语-2013.1.26 重点难点序数词的拼写 冠词与序数词的搭配数 词1、分类：基数词和序数词。可以作句子的主语、宾语、表语和定语。2、基数词：表示数目的词叫基数词。1、 英语中常用的基数词有：1-100(学生自己写出来)1000one(a) thousand, 10000 ten thousand, 100000one hundred thousand , 1000000one million,10000000ten million, 100000000one hundred million,108one hundred and eight, 146one hundred and forty-six, 500five hundred , 1001one thousand and one, 2、注：(1)百位与十位之间要加and；十万位和万位,亿位和千万位之间通常也要加and。(2)英语用千、百万等单位计数,大数字从右向左看, 每隔三位划一逗号,倒数第一个逗号之前要用thousand,倒数第二个逗号之前要用million,倒数第三的逗号之前要用billion表示。(3) hundred、 thousand、 million作数词时,不用复数,前面可以加上one, two, 等其它数词。用作名词时复数表示“成上”,后面必须要有of,前面可以加上some,many,several等词。如：five hundred(五百), hundreds of(成百上千的), ten thousand(一万), thousands of(成千上万的), millions of(成百万的)3、序数词：表示顺序的数词叫序数词。1st2nd3rd4th5th6th7th8th9th10thfirstsecondthirdfourthfifthsixthseventheighthninthtenth11th12th13th14th15th16th17th18th19th20theleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwentieth30th40th50th60th70th80th90th100ththirtiethfortiethfiftiethsixtiethseventietheightiethninetiethone hundredth1、 英语的序数词基本变法口诀：(1) 一般在基数词后加th,(2)-ve结尾的改为-fth,(3)-ty结尾的改为-tieth,(4)熟记特殊词。2、序数词如下：1000thone thousandth, 1000000th one millionth., 第703the seven hundred and third, 3、注：(1)两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词thirty-sixth,(2) 使用序数词时一般加定冠词the. 如：Im in the third grade.(3) 序数词作“几分之几”讲时,有复数形式。如：1/5one fifth ; 2/3 two thirds ; 4、数词的用法：1、表示年份：2002: twenty thousand and two ; 1976 : nineteen seventy-six.2、表示日期： 12月1日: Dec.1st或the first of December；2002年11月8日: Nov. 8th, 2002.3、表示时刻： 5：15 five fifteen或a quarter past five ; 8：30 eight thirty或half past eight ; 10：45 ten forty-five或a quarter to eleven.4、表示编号：Room 105Room one 0 five; Bus No.13Bus Number Thirteen 5、小数的读法：5.7 five point seven, 0.16 zero point one six.6、“半”的表达： 1/2half, 半小时half an hour, 1.5小时one and a half hours或one hour and a half. 7、序数词前面加the时,表示顺序,加a/an时表示“再一、又一”。如：The third lesson is rather difficult. / Shall we read the text a third time?注意表示“十”的数词的复数形式可用来表示人的岁数或年代，例如： He is in his early thirties He died still in his forties This took place in 1930s备考精选精练 1. It is said that SARS has killed more than _ people worldwide. A. three hundreds B. three hundreds C. three hundreds D. three hundred 2. -How many workers are there in your factory? -There are two _. A. hundreds B. hundred C. hundred of D. hundreds of 3. -Which is the smallest number of the four? -_. A. Two-thirds B. A half C. A quarter D. Three-fourths 4. -What do you think of a war, Li Ming? -Ive no idea. But its a fact that _ people had to leave their hometown during the War on Iraq. A. three thousands B. thousand of C. thousands of D. several thousands 5. We all think that the _ century will bring us more hopes. A. twenty-first B. twentieth-first C. twenty-one D. twentieth-one 6. -Can you write the number eighty-five thousand, six hundred and twenty-six? -Yes, it is _. A. 856620 B. 85626 C. 58662 D. 58626 7. When was the PRC founded? It was founded on _. A. July 1, 1921 B. October 1, 1949 C. August 1, 1927 D. May 1, 1922 8. I was 8 years old when my father was 31. This year my father is twice my age. How old am I? A. 21 B. 22 C. 23 D. 24 9. _ Chinese are looking for ways to learn English well before Beijing 2008 Olympics. A. Thousand B. Thousands C. Thousand of D. Thousands of 10. Both of the two rulers are broken. I want to buy a _one.A. three B. third C. forth D. /11. Weve planted two hundreds trees in the centre of our city this year. A B C D12. Five million of dollars is a lot of money. A B C D13. There are thousand of children in the park now. A B C D14. By the end of twenty century, the world population had passed six billion. A B C D15. Over three fifth of the worlds books and newspapers are written in English. A B C D本周作业 复习语法-数词数词补充练习题1. -There is a wrong word in line _. -Where? -In the _ line. A. two; two B. two; second C. second; two D. second; second 2. -I hear your pen friend is visiting Lianyungang again. Is it the _ time for him?-Yes, and he will come for a third time next spring.A. first B. second C. third D. fourth3. _ years ago, very large animals called dinosaurs _ in some areas of the world.A. Many million, have been living B. Million, had livedC. Several millions of, are alive D. Millions of, lived4. -Good news! Bill won_ medal in the long jump just now. -Really? Thats his_ one at our sports meeting. A. a; four B. an; fourth C. a; fourth5. Fathers Day is on _ Sunday of June. A. three B. third C. the third6. “What time do you usually get up, John?” “I usually get up at _.”A. half past six B. half to six C. half after six 7. It is reported that people in the world are suffering from the H1N1 flu.A. several thousands ofB. ten thousands C. thousands of D. thousands8. Today is my mothers _ birthday. I will buy her a gift.A. fourteenB. fourteenthC. forty D. fortieth9. A war took place in _.A. the 1720s B. 1720s C. 1720s D. the 172010. Its not easy for trail walkers to finish walking a _ trail within 48 hours.A. 100-kilometre B. 100-kilometres C. 100 kilometres D. 100 kilometres 11. There were about six _ students in the school building during the earthquake, and _ of them didnt run out.A. hundred, two third B. hundred, two thirds C. hundreds, two thirds D. hundreds, two third12. The old man began to learn to drive a car at the age of . A. sixty B. the sixtieth C. sixty years old D. sixties13.Peter, how old is your father this year?-_. And we just had a party for his _ birthday last weekend.A. Fortieth; forty B. Forty; forty C. Forty; fortieth D. Fortieth; fortieth 14. About _ of the workers in the factory were born in the _.A. two-thirds; 1970 B. two-thirds; 1970s C. two-third; 1970 D. two-third; 197015.Excuse me, how many students are there in your art club?There are _.A. twelve B. twelfth C. the twelfth16. -How old is your daughter?-_. We had a special party for her _ birthday last week.A. Ninth; ninth B. Nine; nine C. Ninth; nine D. Nine; ninth17. All the teachers live on _ floor. A. the second B. two C. second18. The work is too difficult for Mr. Zhu to finish in a week. He needs _ days.A. more two B. two more C. two another D. another more19. _ soldiers and doctors have been in Wenchuan to help the people there.A. Thousand of B. Two thousands C. Thousands of20. Shanghai has opened its _ TV channel (频道) that sends programs in foreign languages.-Great! I can imp