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1、讲师： 乔海红 学校：湖北省水果湖高级中学数词的基本形式和基本数词的基本形式和基本用法用法目标要求010102020303知识清单常设误点即学巩固Part 1Part 1知识清单知识清单 一一. .基数词基数词二二. .序数词序数词三三. .小数表示法小数表示法四四. .百分数表示法百分数表示法01一一. .基数词基数词表示数目（数量的多少），如：one, two, three, four巧记口诀：巧记口诀：找清规律很容易，十二以内词名异；十三数到十九去，后加-teen莫忘记。二十、三十至九十，整十之后有-ty;如果要说“几十几”，中间“-”号别丢弃，hundred是“一百”，请你记住莫大意。
2、twenty-sixfortyfifty01基数词的用法基数词的用法1 1、作定语、作定语 There are three boys in this class.2 2、作主语、作主语 It is said that thirteen is an unlucky number.3 3、作宾语、作宾语The city has a population of three million.4 4、作表语、作表语I am eighteen.5 5、作同位语、作同位语They ten will go abroad.01二二. .序数词序数词表示排列的顺序，如：first, second, third,
3、fourth序数词前一般要加the。巧记口诀：巧记口诀：一二三全要变；(first, second, third)其余都加th;th里有意外，8去t,(eighteighth)9去e(nineninth);字母f代ve(fivefifth; twelvetwelfth);ty变成tie(twentytwentieth);若要变化几十几，只变个位就可以(twenty-onetwenty-first)。01序数词的用法序数词的用法1、作主语。、作主语。The first day of May is International Labour Day.2、作表语、作表语。作表语时，序数词前的定冠词往往
4、省去。Maria was second last year.3、作宾语。、作宾语。He was among the first to come. 4、作定语。、作定语。May is the fifth month of the year.5、作同位语。、作同位语。Who is the woman, the second in the second line?01三三. .小数表示法小数表示法小数点左边的数通常按基数词读；小数点右边的数通常按编码式读法单个读出。six point eight sixfourteen point one fivethree hundred and forty-fi
5、ve point four five six6.8614.15345.45601四四. .百分数表示法百分数表示法百分数中的百分号%读作percent。30.57%thirty point fifty-seven percentPart 2Part 2常设误点02一一. .名词性数词名词性数词hundred,thousand,millionhundred,thousand,million等前有数词或等前有数词或severalseveral时不能用复时不能用复数形式数形式, ,其后所跟的复数名词前不加其后所跟的复数名词前不加of,of,表表“一百，一千，一百万一百，一千，一百万”时需加时需加on
6、eone或不定冠词或不定冠词a a。如表不确切的数目应用。如表不确切的数目应用hundreds/thousands/millions hundreds/thousands/millions of+of+复数名词。复数名词。如：如：ten thousand, several million people, two hundred teachers, hundreds of students。二二. .用以表示年龄时，逢十的基数词复数之前应加物主代词，用以表示年龄时，逢十的基数词复数之前应加物主代词，如：如：in her forties“在她四十多岁时在她四十多岁时”。三三. . 与基数词合成的定
7、语，其中的名词用单数。与基数词合成的定语，其中的名词用单数。如：如：a three-month-old baby, a five-year plan02一一. .序数词前一般要加上定冠词或物主代词等限定词。如：序数词前一般要加上定冠词或物主代词等限定词。如：二二. .分数的分母部分用序数词，分子为分数的分母部分用序数词，分子为1 1时，分母用序数词的单数形时，分母用序数词的单数形 式；分子为式；分子为2 2及以上时，分母用序数词的复数形式。及以上时，分母用序数词的复数形式。It was the/my first visit to Europe._ of the buildings were r
8、uined. A. Three fourth B. Three four C. Three-fourths D. Three-fourC021. score(20)，dozen(12)的用法与的用法与hundred, thousand, million, billion相同，即与具体的数字连用时，不加相同，即与具体的数字连用时，不加s , 泛指时，加泛指时，加s , 与与of 连用；连用； 如如: The old lady bought 3 score/dozen eggs 2. scores of/dozens of两者表示的都是虚数两者表示的都是虚数“很多很多”之意。之意。 如如: He
9、has been there scores/dozens of times. Part 3Part 3即学巩固 031.(2017全国卷)In the summer holiday following my eighteen birthday, I took driving lessons. 2. When he retired, he was already in his _(sixty).3. Two third of the islands population made a living by fishing.eighteenthsixtiesthirds4. Shortly after the accident, two _ police were sent to the spot to keep order. A. dozen of B. dozens C. dozen D. dozens ofC5.The Olympic Games are held _. A. every four years B. every four year C. every fourth years D. every four-yearsASee you!