专题四数词学前自测（发现考点）( )1. _ people are sending and receiving text messages.A. Million of B. Several million ofC. Millions of D. Several millions( )2. Before the new year, _ people went to visit the flower market.A. thousands of B. 8 thousands ofC. 8 thousand of D. thousand of( )3. Its my daughters birthday today. Shes _ years old.A. eighteen B. eighteenthC. the eighteen D. the eighteenth( )4. Is it far from your home to school? Not very far, only _.A. 15 minutes rides B. 15 minutes rideC. 15 minutes ride D. 15 minutes rides( )5. Time isnt enough for me. Can you give me _?A. two another minutes B. more two minutesC. another minutes two D. another two minutes( )6. Each year _ sharks are killed worldwide for their fins(鱼鳍).A. million of B. millions ofC. many millions D. four millions( )7. Its about _ walk from my home.A. ten minute B. ten minutesC. ten minutes D. ten-minutes( )8. The old man has _ sons. Deal is the _ one.A. three; two B. three; second C. third; two D. third; second( )9. This classroom is _ ours.A. three times big as B. as three times big asC. three times as big as D. as big three times as( )10. The basketball team of our school ranks _ in the match.A. three B. third C. the three D. the third常考考点知识清单（研习考点）考点一 基数词的用法及读法1. 基数词的构成及读法基数词构成及读法例词1 121 12 的基数词为特定的独立单词one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve13 1913 19 的基数词皆以-teen 结尾,单词中的两个音节都读重音thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen20 9020 为 twenty。 30 90 之间的整十基数词皆以-ty 结尾,第一个音节重读twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety注意:1. 21 99 之间的各非整十数词须在十位与个位之间加连字符“-”。 如:32 thirty-two2. 读数字时,百位和十位之间、百位和个位之间加 and。 如:134 one hundred and thirty-four; 106 one hundred and six英语中的“万”“亿”英语中的“万”用十千表示,“亿”用百个百万来表示forty thousand 四万;two hundred million 两亿其他数词1000 以上的数字,从后向前数,每三位加“,”。 第一个“,”前为 thousand,第二个“,”前为 mil-lion,第三个“,”前为 one billion 或 one thousand million。 每一节从左到右按百、十、个的顺序表示。如:243, 621, 304, 782 读作:two hundred and forty-three billion, six hundred and twenty-one mil-lion, three hundred and four thousand, seven hundred and eighty-two其他数词注意:hundred, thousand, million, billion 表示确定的数目时不用复数形式。 后面跟名词时,名词需用复数形式;如果这四个基数词后面跟 of 表示概数,则此四个基数词必须用复数形式。 如:thousands of 成千的巧记: hundred, thousand 和 million 等,有时含糊有时清;清时两无(无 s 和 of),含糊时两有(有 s 和 of)。2. 基数词的用法(1) 基数词在句中可用作主语、宾语、表语和定语。Twenty of them are Young Pioneers. 他们当中有二十个是少先队员。(2) 用于名词之后表示顺序编号。Please open your books and turn to Page 28. 请打开书翻到第 28 页。(3) 基数词可表示年份、时间(钟点)、电话号码、年龄等。I was born on July 12, 1989. 我出生在 1989 年 7 月 12 日。(4) 表示“世纪年代”,用“in + the +基数词复数”。in the 1990s 在 20 世纪 90 年代(5) in ones+整十的基数词复数表示“在某人多岁时”。The old woman is in her nineties. 这位老太太九十多岁了。(6) “数词+连字符+单数名词”或“数词+连字符+单数名词+连字符+形容词”构成复合形容词作定语。We have a seven-day holiday in October. 在 10 月我们有一个 7 天的假期。She is an eight-year-old Chinese girl. 她是一个 8 岁的中国女孩。考点二 序数词的构成及用法1. 序数词的构成及读法范围特点例词1 3特殊记first, second, third4 19 在大多数基数词末尾直接加-th fourth, seventeenth八去 t,九减 e, f 来把 ve 替eighth, ninth, fifth, twelfth20 90 把基数词后面的 y 变为 i 再加-ethtwentieth, ninetieth21 以上的多位数个位数用序数词,其余用基数词twenty-first, one hundred and sixty-eighth巧记: 基数词变序数词的口诀 基变序,有规律,一、二、三特殊记,结尾各是 t, d, d,八去 t,九减 e, f 来把 ve 替,整十变 y 为 ie,若是见到几十几,只变个位就可以,排列顺序不费力,连字符号莫丢弃。 巧学妙记加努力,hundred 是你的好成绩!2. 序数词的用法(1) 序数词在句中可用作定语、主语、宾语和表语,前面要加定冠词 the。The first is always better than the second. 第一总是比第二好。She will choose the third. 她将选择第三个。(2) 序数词前面可以用形容词性物主代词或名词所有格修饰,此时序数词前面不加定冠词 the。This is my third time to Shanghai. 这是我第三次去上海。(3) 不定冠词 a/ an 与序数词连用,表示“又一;再一”。I have been to Beijing twice, but I would like to go there a third time. 我去过北京两次,但是我想再去一次那里。巩固训练（夯实基础）一、单项选择( )1. _ trees were cut down. And many birds lost their home. I am sorry to hear that.A. Two thousands B. Thousands of C. Thousand of D. Two thousand of( )2. Mr Zhang asked me _ question before I could answer _.A. the second; the first B. a second; a firstC. a second; the first D. the second; a first( )3. Is there _ today? Yes, a _ boy was killed by an accident today.A. anything new; ten-year-old B. new anything; ten years oldC. anything new; ten years old D. new anything; ten-year-old( )4. Can you read “1245”? Yes. Its _.A. one thousand and two hundred and forty five B. one thousand, two hundred and forty-fiveC. one thousand, two hundred and forty five D. one thousand, two hundreds and forty-