2024年暑假仁爱科普版英语七升八 数词专题

数词 基数词: 表示人或事物数量多少的词. 序数词: 表示人或事物的顺序的词. 往往和定冠词the连用. 1. 基数词. 它的构成方式如下： 1---one 13---thirteen 20---twenty 100---a / one hundred 2---two 14---fourteen 21---twenty-one 101---one hundred and one 3---three 15---fifteen 22---twenty-two 110---one hundred and ten 4---four 16---sixteen 23---twenty-three 156---one hundred and fifty-six 5---five 17---seventeen 30---thirty 1,000---a / one thousand 6---six 18---eighteen 40---forty 3,895---three thousand, eighty hundred and ninety-five 7---seven 19---nineteen 50---fifty 1,000,000---a / one million 8---eight 60---sixty 1,000,000,000---a / one billion 9---nine 70---seventy 10---ten 80---eighty 11---eleven 90---ninety 12---twelve 1.基数词的读法. 1)1---12 单独记忆 2)13---19: 词尾加-teen : 3)20,30,40,50,60,70,80,90 : 逢十词尾加-ty 4) 21----99: 在十位与个位之间加连字符构成. 21--- twenty-one 99---ninety-nine 5)101---999 : 先说几百, 再加and ,再加末尾两位数或个位数. 101---one hundred and one 238----two hundred and thirty-eight 6) 1000以上的数: 先将数字从右往左数,每三位数用一个逗号隔开, 从右往左第一个逗号表示 “千”读thousand 第二个逗号表示 “百万”读million 第三个逗号表示 “十亿”读billion 英语中无"万"这个词，我们可以用"几十个千（thousand）"表示几万，"几百个千（thousand）"表示"几十万"。 18,657,421---eighteen million , six hundred and fifty-seven thousand , four hundred and twenty-one. 2，510＝two thousand five hundred and ten； 84，296＝eighty-four thousand two hundred and ninety-six； 274，350＝two hundred and seventy-four thousand three hundred and fifty。 【即学即练】 一用英文读出并写出下列数字： 1. 72 __________ 2. 103 __________ 3. 1,720 __________ 4. 11,845 __________ 5. 6,538,005 __________ 6. 512 __________ 7. 54,000 __________ 8. 1,107,321,003 __________ 9.25, 302 _____________________ 10.7, 201, 750, 110 ___________________ 二、根据句意或中文提示写出合适的英语数字。（不能用阿拉伯数字） 1. There are __________ days in a week. 2. There are ________________ or ________________ days in a year. 3. There are ________________ or __________________ days in February. 4. There are ____________________days in August. 5. There are __________ minutes in an hour. 6. There are __________ months in a year. 7. There are ______________________(数百个) students in the school. 8. There are ______________________(数千个) people in the square. 2. 序数词 基数词变序数词 口诀: 基变序,有规律,词尾要加th .一二三,特殊记,词尾分别tdd(first second third ) 八去t , 九去e, ve要用f替. ty变作tie,再加th莫忘记. 若遇几十几,只变个位就可以. 1)英语序数词的第一至第三需特殊记忆。first（1 st）, second(2 nd), third(3 rd) 2)序数词中第四至第十九都是在基数词后加th, 但要注意第5、8、9、12的拼法：fifth、eighth、ninth、twelfth. 3)序数词中第20至第90的十的倍数是将基数词词尾的y改为i, 再加-eth. twenty twentieth （第二十） eighty eightieth （第八十 4)十以上的基数词变成序数词时，把个位数变成序数词即可，十位数不变。 thirty-two thirty-second （第三十二） seventy-five seventy-fifth （第七十五） 5). 序数词的缩写形式，在阿拉伯数字后加上序数词的最后两个字母构成。 如： fifth 5th second 2nd 【即学即练】 把下列基数词变为序数词： three __________ five _____________ eight _____________ nine _______________ twelve _______________ fourteen ______________ twenty-one ________________ thirty-four _________________ 三. 数词的应用. 1. 表编号. 结构: 名词(首字母要大写) + 基数词 = the +序数词 +名词 Lesson One = the first lesson 注：有些编号，一般仅用第一种表达法。 Room 101 101号房间 2. 序数词前一般加定冠词the 但序数词前与不定冠词a /an 连用时,表示 “又一,再一” Mr Brown has a second car. 布朗先生另外还有一辆车。 He has tried a second time. 他又尝试了一次。 You’ve done it three times .Why not try ____fourth time ? A.a B.an C.the D./ 3. 基数词的复数形式表示年代和年龄 1)表示年代: in the + 年份的复数 在几世纪几十年代. 在十九世纪七十年代. _in the 1870s in the 1970s 在20世纪70年代 2)表年龄: in one’s + 整十的复数 表示在某人几十岁时 在他三十岁时: ________in his thirties___________. 4. hundred / thousand /million /billion 1).若hundred / thousand /million /billion 前有基数词时,其后不加s,也不加of .若没有时既加s 也要带of . three hundred seats 三百个座位 hundreds of 数以百计的，成百上千的 thousands of 数以千计的，成千上万的 millions of 数百万的 billions of数十亿的 【即学即练】 1.More than two _____ trees are planted in our neighborhood every year. A. hundred B. hundreds C. hundreds of D. hundred of 2.The 15th Chinese Bridge-Chinese Proficiency Competition will be held this year! —That's great!_______ foreign college students are interested in Chinese learning. A. Hundred of B. Thousands C. Hundred D. Thousands of 3.　　　people took part in the competition but only few of them succeeded.   A.Million of B.Many million of C.One million of D.Millions of 6. 时刻表达法: 1. 整点用基数词+o’clock, 如：1:00 ____________ 5:00 ___________ 2.按“钟点数+分钟数”的顺序，如：6:18 __________ 9:48______________ 3. 分钟不超过30（包含三十）时，用“分钟+past+钟点数”表达。 如：6:05______________ 7:15______________ 8:30________________ 4. 分钟数超过30时，用“分钟数+to+钟点数”表达。其中“分钟数”为60减去原分钟数，“钟点数”为下一个钟点数。 如：3:50 _____________ 4:45_____________ 5:56_________________ 注意：在具体时刻前通常用at。如： ( at ) six or six o’clock 【即学即练】 一、用英语写出下列时间。 ____________ ____________ ____________ ____________ 7. 日期表达法: 结构: 1).月 日,年 (日用序数词,年用基数词) 注: 年份的读法: 先读前两位数,再读后两位数. 读日时要加the. 2007年3月21日.--- March the twenty-first , two thousand and seven.( March 21th ,2007) 1900---nineteen hundred 2008---two thousand eight 1999年-nineteen ninety-nine； 2000-two thousand； 1905-nineteen o five； 2).日 月 年 (the +序数词+of +月, 年) 2007年3月21日---the twenty-first of March ,two thousand and seven. 习惯写作：March 21th ,2007 1998年6月8日 写作：June 8，1998；读作：June the eighth， nineteen ninety-eight 或the eighth of June， nineteen ninety-eight。 2003年3月17日，星期一 Monday, March the 17th, 2003. 用英语写出下列日期。 _______________ ______________ _____________ _______________ 8. 分数词的表达法: 1).结构: a).分子用基数词,分母用序数词. b).当分子大于1时,分母加复数. 3/4--- three fourths (three-fourths) 2).注意: a).分数词的几种特殊形式. 1/3—one third = a third 1/4—one fourth = a quarter 1/2—one second = a half 3/4—three fourths = three quarters b).分数词作主语时, 谓语动词根据分数词后面的名词来确定. Two fifths of the milk ______(be ) drunk by Tom . One third of the students _______(be )girls . 【即学即练】 _____ of the students in Class 6 have lunch at school. A. Two fifth B. One thirds C. Three fifth D. Three quarters 9．表示百分数 5℅：five percent， 0.8℅ zero point eight percent. 分数、百分数与主谓一致 分数、百分数的考查往往和主谓一致相联系。当分数、百分数修饰可数名词的复数时，谓语动词用复数形式；当分数、百分数修饰不可数名词时，谓语动词用单数形式。 　 如： Eighty percent of the students in our school come from Henan. 我们学校百分之八十的学生来自河南。 Two thirds of the water on the earth is sea water. 地球上三分之二的水是海水。 10. 基数词常和一些计量类名词“单数”用“一”连在一起，构成复合形容词，修饰名词。 如： A twelve-year-old boy 一个十二岁的男孩　 a five-mile race 一次五英里的赛跑 课堂检验题： 一．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. 二．单项填空 1.My father is 　　　. And we just had a party for his 　　　birthday last weekend.   A.forty; fortieth B.forty; forty C.fortieth; forty D.fortieth; fortieth 2.—Dad, about 　　　of our classmates wear glasses.   —Oh, that’s terrible. You all should take good care of your eyes. A.three fourth B.third fourth C.third fourths D.three quarters 3.My daughter is 　　　years old. Today is her 　　　birthday.   A.nine; nineth B.nine; ninth C.ninth; nine 4.We asked 1, 000 students from Hope Middle School about what kind of books they love. Here are the results. According to the pie chart above, 　　　of the students love science books.   A.ten percent B.fifteen percent C.a quarter D.half 5.　　　visitors came to take photos of Hongyadong during the vacation.   A.Thousand B.Thousand of C.Thousands D.Thousands of 6.This Saturday is my 　　　birthday. Welcome to my party!   A.fourteenth B.the fourteenth C.fourteen D.the fourteen 7.—Would you like another cup of coffee, Linda? —Thank you anyway. I’ve already had one cup, and I’m drinking　　　cup.   A.one B.the first C.the second D.the third 8.—How many villagers are there in the little village? —Over 　　　.   A.seven hundred B.seven hundreds C.hundreds D.hundred of 9.—Which class won the match in the end? We aren’t quite sure. Perhaps 　　　did.   A.Class Third B.Third Class C.Class Three D.Three Class 10.September is 　　　month of the year.   A.ninth B.nine C.the nine D.the ninth 11.—Excuse me, how can I get to the swimming pool? —Sorry. It’s my　　　 time to come here.   A.one B.first C.once D.the first 12.I don’t believe that this 　　　girl can paint so nice a picture.   A.five years old B.five-years-old C.five-year-old D.five-year old 13.—How was your day off last Saturday? —Perfect! It was my grandfather’s 　　　birthday. We had a big cake.   A.eighty B.eightieth C.the eightieth D.the eighty 14.Last year, I visited a factory in Shandong. There are about 　　　workers in it.   A.six thousands B.six thousand C.six thousands of D.six thousand of 15.Three students ran faster than Lucy in the race. Lucy was 　　　.   A.the fourth B.four C.fourth D.the four 16.There are 　　　days in a week and Tuesday is　　　day of the week.   A.seven; third B.seven; the third C.seventh; three D.the seventh; three 17.—His uncle plans to give 　　　of his money to the charity.  Really? What a kind man he is! A.one third B.one three C.one thirds D.ones thirds 18.　　　people took part in the competition but only few of them succeeded.   A.Million of B.Many million of C.One million of D.Millions of 19.There are 　　　months in a year. December is the 　　　month of the year.   A.twelve; twelve B.twelve; twelfth C.twelfth; twelve D.twelfth; twelveth 20.I’d like 　　　bowls of noodles. One is for myself and the other two are for my parents.   A.one B.two C.three D.four 21—How do you read “March 8th”? —It reads “March 　　　”.   A.eight B.eighth C.the eighth D.the eight。 22. We can say the number 78,645 in English like this________. A. seventy-eight thousand and six hundred and forty-five B. seventy-eight thousand six hundred and forty five C. seventy-eight thousand six hundred and forty-five D. seventy eight thousand six hundred and forty-five 23.“The year 1999”should be read（应该读作）“The year _____.” A. nineteen and ninety-nine B. nineteen ninety-nine C. one thousand nine hundred ninety-nine D. nineteen hundred and ninety-nine 24. What’s the date today? It is ________. A. Friday B. time to go C. cloudy D. June 4th 25. 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 课后作业 一写出下列基数词和序数词。 9___________ __________________ 11___________ __________________ 12__________ __________________ 13___________ __________________ 20__________ __________________ 71___________ __________________ 22__________ __________________ 83___________ __________________ 102 ___________ 189 ___________ 英汉互译 ①十二　 　 ②二十　 　  ③十四　 　 ④四十　 　   ⑤十五　 　 ⑥五十　 　  ⑦百　 　 ⑧千　 　   ⑨百万　 　  ⑩三百名学生　 　  成百上千　 　   成千上万　 　   She was born on December　 　,1999. 她出生于1999年12月5日。 Two　 　 of the books are mine. 五分之二的书是我的。 二．单项练习 （ ）1.Look! An old man is lying on the road. His leg is badly hurt. Let’s call ____. A.118 B.119 C.120. （ ）2.Today is Jack’s birthday. He is _______ years old now. A. fourteenth B. fourteen C. the fourteenth D. the fourteen （ ）3.There are twelve boys and thirteen girls in Class Four，which means ____ students in total. A. 33 B. 25 C. 13 D. 12 （ ）4.Today is my cousin’s _____ birthday. I am going to his birthday party tonight. A. nineteenth B. the nineteenth C. nineteen. （ ）5.My father gave me a bike on my ______ birthday. A. ten B. a tenth C. the tenth D. tenth （ ）6.This Saturday is my _____ birthday. Welcome to my party! A. fourteenth B. the fourteenth C. fourteen D. the fourteen （ ）7.The apartment has ___ floors and Mr. Smith lives on the _____ floor with his family. A. twelve; twelve B. twelfth; twelfth C. twelve; twelfth D. twelfth; twelve （ ）8.How old is your son?—_____. We had a special party for his ____ birthday yesterday. A. Nine, nine B. Ninth, nine [来学K]C. Nine, the ninth D. Nine, nint （ ）9.My grandparents live in an old apartment with___ floors and they are on the _____ floor. A. fifth; three B. fifth; third C. five; three D. five; third （ ）10. ___ of the students in our class _____ going to the summer camp in Beijing next week. A. Two fifths; are B. Second fifths; are C. Two fifths; is （ ）11.Last week, five _____ students took part in the sports meeting in our school. A. hundred B. thousands C. hundreds of D. thousands of （ ）12.______ people watched the rocket flying up into the sky. A. Thousand B. Thousands C. Thousands of （ ）13.— Enshi is becoming a popular tourist destination now. —I think so. _________ people come here every summer vacation. A. Hundreds and thousands of　 B. Hundred and thousand of　 C. Hundreds and thousands （ ）14.Mount Tai is so famous that _____ people visit it every day. A. hundred of B. seven hundreds of C. hundreds of 三、用括号内所给汉语提示或词的适当形式填空 1.Every year, 　　　　　　　　　　　　(数以百万的)fish die in that country.   2.　　　　　　　　(五分之三)of her pocket money has been spent buying books.   3.On his 　　　　　　　　(11)birthday, he got a computer from his father.   4.—Excuse me, could you please tell me where Mr. White’s office is? —Sure. He is in Room　　　　　(nine)on the 　　　　　(two)floor.   5.My grandfather is in his　　　　　　　(eighty), but he is still very healthy.   6.The teens took a photo of smiling faces to welcome World Smile Day in (五月).   7.There are　　　　(12)months in a year, and April is the　　　　　　(4)month.   8.They have lived in the city for　　　　　(三十)years.   9.His birthday is on　　　　　　　　　　(六月七日).   10.That song was very popular　　　　　　　　　　　　(在20世纪40年代).   11.I live on the　　　　　　　(twelve) floor of the building.   12.Brad is my younger brother. We had a special party for his 　　　　　(five) birthday yesterday.   13.Jane would like to live on the　　　　　(three) floor.   14.There are 　　　　　(seventh) small apples in the bowl.   5 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$