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数词,1.基数词、序数词和分数词的构成及基本用法。 2.数词作主语时的主谓一致。,复习重点,基础知识,数词主要包括基数词、序数词和分数词。基数词是表示数目多少的数词，序数词是表示先后顺序的数词。分数词由基数词和序数词构成。,一、基数词 1. hundred, thousand, million, billion, dozen, score等前有具体数字或several, a few等修饰时，一般不用复数；在表示不确切数目时，可用复数。如： Several million people in the world are using this brand of toothpaste every day. My teacher went to the bookstore and bought dozens of books.,2. 表示年岁时，用“in ones +逢十的基数词的复数”。如：in his forties。 3. 表示年代时，用“in the +逢十的基数词的复数”。基数词的复数若用阿拉伯数字表示，可直接加s，也可加s。如：in the 1950s / 1950s。,二、序数词 1. 序数词前通常要加定冠词the或与物主代词一起使用，在句中可作主语、宾语、定语和表语等。 2. 序数词前也可加不定冠词，表示“再一，又一”。如：a third time, a third and a fourth等。,三、分数词 1. 分数词是由基数词和序数词构成，分子用基数词表示，分母用序数词表示；除了分子为1的情况下，序数词都要用复数形式。如：1/3 one third；3/5 three fifths。 2. “分数/百分数+ of +名词/代词”作主语时，谓语动词的数与名词或代词的数保持一致。如：,Two-thirds of her spare time is spent on housework. 80 percent of the houses were damaged in the big earthquake.,四、常见考点 高考对数词的考查主要集中在年龄表达法、年代表达法、序数词前加冠词及数词作主语时的主谓一致等。 【考例】One-third of the country _ covered with trees and the majority of the citizens _ black people. A. is; are B. is; is C. are; are D. are; is,专项练习,根据括号内的汉语提示补全下列句子（每空 一词）。 1. Early _ _ _ (二十世纪七十年代) no one had any idea that the woman would become a millionaire by planting flowers.,in the 1970s,2. There are a great many overseas students in our university, _ _ _ (他们当中五分之二) come from Asia. 3. Every day in modern society _ _ _ (几百万顾客) go shopping on the Internet. 4. _ _ _ (每三年), scores of students from the foreign language school are sent to Britain to learn English.,Every three years,two-fifths of whom,million customers,several,5. You can go to the railway station on foot. It is only _ _ _ (十分钟的旅程). 6. According to the rules, if you are _ _ _ _ (十八岁以下), you arent admitted into the club. 7. Tom looked quite healthy though he was _ _ _ (七十多岁了).,in his seventies,a ten-minute trip,eighteen years old,under,
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