2019-2020年中考英語專題復(fù)習(xí) 數(shù)詞.doc
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2019-2020年中考英語專題復(fù)習(xí) 數(shù)詞 英語數(shù)詞表示數(shù)目或者順序, 可分為基數(shù)詞和序數(shù)詞?;鶖?shù)詞表示數(shù)量,序數(shù)詞表示順序。知識梳理:提綱挈領(lǐng),抓住重點和難點! 一、基數(shù)詞的構(gòu)成 1112的基數(shù)詞是獨立的單詞,即: one,two,three,four,five,six,seven,eight, nine,ten,eleven,twelve。 21319的基數(shù)詞以-teen結(jié)尾。如: fourteen,seventeen等,但13,15,18較特殊, 13thirteen 15fifteen 18eighteen。 32090的整十位均以-ty結(jié)尾。如: sixty,ninety,但20,30,40,50,80較特殊, 20twenty 30thirty 40forty 50fifty 80eighty。 4十位數(shù)與個位數(shù)之間要加連字符號“-”,如:28twenty-eight,96ninety-six。 5百位和十位(若無十位則和個位)之間加and,如:148one hundred and forty-eight 406four hundred and six。 6hundred(百),thousand(千),million(百萬),billion(十億)等前面即使有具體的數(shù)詞,也不能在它們的后面加s。如:600six hundred,8百萬eight million。 71000以上的數(shù)字,從后往前數(shù)每三位加一個逗號“,”第一個逗號前為千(thousand),第二個逗號前為百萬(million),第三個逗號前為billion(十億)。英語中無“萬”這個詞,我們可以用“幾十個千(thousand)”表示幾萬,“幾百個千(thousand)”表示“幾十萬”。如:2,510two thousand five hundred and ten;84,296eight-four thousand two hundred and ninety-six;274,350two hundred and seventy-four thousand three hundred and fifty。 二、序數(shù)詞的構(gòu)成序數(shù)詞一般是以與之相應(yīng)的基數(shù)詞尾加-th構(gòu)成,例如 fourth, tenth,但以下的這些基數(shù)詞變?yōu)樾驍?shù)詞時, 有特別之處。1.one- first, two - second, three - third, five - fifth, nice - ninth, twelve - twelfth 2. 以ty 結(jié)尾的單詞, 要先變y為I, 在加-eth. 例如:thirty -thirtieth, fifty -fiftieth3. 以one, two, three 等結(jié)尾的多位數(shù)詞, 要將各位數(shù)變成序數(shù)詞。 例如: twenty-one - twenty-first, one hundred and one - one hundred and first 注意: 序數(shù)詞前常用定冠詞, 有時還可以用不定冠詞 a/an 則表示 “又一 ”的意思。 例如:Mr Brown has a second car. 布朗先生另外還有一輛車。He has tried a second time. 他又嘗試了一次。三、數(shù)詞的應(yīng)用 1時刻的表示:小時、點鐘、分鐘、秒鐘要用基數(shù)詞。 “幾點鐘”用基數(shù)詞加oclock。oclock可省略。如: 5點鐘five(oclock) “幾點過幾分 ”,30分鐘”用介詞past。如: 7:05five past seven;7:15fifteen (a quarter)past seven;7:30half past seven。 “差幾分幾點”用介詞“to”。如:7:40twenty to eight;7:45fifteen(a quarter to eight。 日常生活中的時間讀法常常簡化,直接按基數(shù)詞的順序讀。如:7:05seven o five;7:15 seven fifteen。 2年月日的表示: 年份用基數(shù)詞,如:xx年nineteen ninety-nine; 1900年nineteen hundred; xxtwo thousand;1905nineteen o five; 年用基數(shù)詞,日用序數(shù)詞。如:xx年6月8日 寫作:June 8,xx;讀作:June the eighth, nineteen ninety-eight或the eighth of June, nineteen ninety-eight。3. 世紀(jì)、年代表示法: (在)90年代 (in) the nineties (在)19世紀(jì) (in) the nineteenth century (在)18世紀(jì)30年代 (in) 1730s或1730s4編號的表示: Lesson One the first lesson第一課; Bus No3the No3bus 3路公共汽車; 表示住所時不用“No”如:302房間Room 302(讀作:room three o two); 如果編號的數(shù)詞比較長,一般用基數(shù)詞。如:Page 457第457頁; 電話號碼,用基數(shù)詞,如:3855633three eight five five(double five) six three three(double three)。 5分?jǐn)?shù)的表達:分子用基數(shù)詞,分母用序數(shù)詞,分子大于“1”,分母則加“s”。如:13 one third,23two thirds; 另外:12 a(one)half; 14one fourth或a(one)quarter;34threefourths或three quarters。 half a second; a quarter of a second四分之一秒 6. 表示有小數(shù)的詞用基數(shù)詞。 5.5 five point five 12.135 twelve point one three five 7表示百分?jǐn)?shù)5:five percent (per cent), 0.8 zero point eight percent (per cent).8表示有小數(shù)的詞用基數(shù)詞。 5.5 five point five 12.135 twelve point one three five 9其他用法:1)基數(shù)詞單數(shù)名詞形容詞構(gòu)成合成形容詞。如:一個五歲的男孩a five-year-old boy; 一座800米長的橋an 800-metre-long bridge;女子400米接力girls400-metre relay race。2)具體數(shù)詞metre(s)kilometre(s)kilo(s)long high tall deep away等。如:長江長6300公里。The Changjiang River is 6,300 kilometres long 3)表示幾十歲用序數(shù)詞,eg. 在他三十幾歲時 in his thirties4)倍數(shù)的表達:(一倍用once,兩倍用 twice,兩倍以上用基數(shù)詞times。如:5倍five times)。 例如:He is as tall a boy as I. He is a head taller than I . He is two years older than IChina is four times as large as Europe.I am twice as old as you. (=I am twice older than you. /I am twice the age of you.)My books are twice as many as yours.China is four times larger than Europe.(=China is four times the size of Europe.)I pay twice as much as it was worth.I pay twice as much for the house. 例題解析:舉一反三,學(xué)的更輕松! 1. _ Chinese are looking for ways to learn English well before Beijing xx Olympic. A. Thousand B. Thousands C. Thousand of D. Thousands of 2. Both of the rules are broken. I want to buy a _ one. A. three B. third C. forth D. /3). - Which is the smallest number of the four? - _. A. Two- thirds B. A half C. A quarter D. Three-fourths4). Please write down the new words in the text of _. A. Lesson Eleven B. the Lesson Eleven C. Lesson Eleventh解析:1.基數(shù)詞hundred, thousand, million, billion 等前有具體數(shù)字時,它們后面不能加s,若這些詞后面有介詞of (幾百,成百上千) ,thousands of (幾千,數(shù)千個),millions of, billions of 前不可用數(shù)詞修飾。但可用many, some, several 等修飾。故選答案D. 2答案: B。此題主要考查序數(shù)詞的運用。 3答案:C。此題主要考查英語中的分?jǐn)?shù)表示法。英語中表示分?jǐn)?shù)時,分母用序數(shù)詞,分子用基數(shù)詞,當(dāng)分子大于1時,表示分母的序數(shù)詞后要加s. 4答案: A。 此題主要考查基數(shù)詞的編號。在通常情況下,名詞編號有這幾種表示法: 1。事物名詞+基數(shù)詞,且每個單詞的首字母都要大寫。如:Lesson Eleven;2。定冠詞+基數(shù)詞+事物名詞。如: No. 6 Middle School練習(xí)與鞏固:熟能生巧,取得好成績!選擇填空:1. _ of people in the world are sending information by E-mail ever day. A. Many million B. Several million C. Several millions D. Many millions2. About _ of the surface of the earth _ covered with water. A. three quarter, is B. three quarters, has C. three quarters, is D. three quarter, are 3. It will take _ time to finish the work. A. one and a half years B. a year and half C. one and a half years D. a year and halfs4- How long will your stay here ?、 -For _ . A. one and two days B. one and two day C. a day or two D. one or two day5When he moved to Germany in _ , he was already in _ . A. the fifties; his sixties B. fifties; his sixties C. the fifties; his sixty D. fifty; sixty6My brother lives in _ on _ floor. A. six Room ;second B. Room six ;the second C. Room six; two floor D. the room six ; the second7December is _ month of the year. A. twelve B. twelfth C. the twelfth D. the twelve8This took place in the _ . A. 1940 B. 1940s C. 1940es D. 1940th 9It is only _ from my home to the train station. A. ten minutes walk B. ten-minutes walk C. ten minutes s walk D. ten minutes walk10There are _ in this building , I live on _.A. nine floors ,the ninth floor B. nine floor, the ninth floorC. nine floor , nine floors D.ninth floor,the ninth floor 11The water behind the Three Gorges Dams (三峽大壩) should be _ higher than downstream( 下游)。 A. sixty-five meter B. sixty-fifth meter C. sixty-five meters D. sixty-fifth meters12. There are _ days in a year. A. three hundred sixty-five B. three hundred and sixty-five C. three hundred and sixty five D. two hundreds and sixty-five13. -How many teachers are there in your school? - _. , but Im not sure. A. Hundreds B. Hundred C. Hundreds of D. One hundred14. There are _ doctors and nurses working hard in that hospital. A. thousand B. two thousand C. two thousands D. two thousands of15. - Whats one fourth and a half, do you know? - Yes, its _. A. two sixths B. three fourths C. one three D. three sixth16. Now children, turn to page _ and look at the _ picture in Lesson Two. A. twentieth, one B. twenty, one C. twentieth, first D. twenty, first17. Both of the two rulers are broken. I want to buy a _ one. A. three B. third C. forth D. /18. December is the _ month in year. A. twenty B. twelve C. twentieth D. twelfth19. - What is the date today? - Its _. A. Thursday B. June the sixteenth C. the best day D. June fifteen20. She knows a lot about China as she has been to China _. 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