1、高考英语语法：数词一.基数词: 表示数目的数词1.两位数: 几十和个位数之间加连词号, 如: twenty-three, forty-seven, ninety-six2.三位数的读法: 第一个数字+hundred + and +后面的一位或两位数字, 如: 101读作one hundred and one, 864读作eight hundred and sixty-four3.四位数和四位以上数字的读法: 阿拉伯数字每三位为一段, 从后往前用逗号分开, 每个逗号处所用的数词分别为: thousand, million, billion, 如: 21,634,755读作twenty-one m
2、illion six hundred and thirty-four thousand seven hundred and fifty-five. 注意: 读这样的数时, 只在hundred一词后加and4.hundred, thousand, million, billion表示具体数目时都不用复数形式, 但它们的复数形式可以用于一些词组中, 如: hundreds of, thousands of, millions of, billions of.5.数词dozen, score的用法与hundred, thousand等相同二.序数词: 表示数目顺序的词1.序数词一般是由基数词加th构
3、成, 序数词前一定要加the, 如: the seventh, the thirteenth, the one hundredth2.以y结尾的基数词构成序数词时, 先把y变为i, 再加eth, 如: the twentieth, the fortieth, the fiftieth, the eightieth3.大于二十的基数词对应的序数词, 只将末位数变为序数词, 前面的其他位数仍用基数词, 如: 第532读作five hundred and thirty-second4.不规则的序数词如下: the first, the second, the third, the fifth, th
4、e eighth, the ninth, the twelfth三.数词的用法:1.编号的事物可用序数词或基数词加名词构成, 如: the fourth lesson =lesson four, the fifteenth page =page fifteen, the ninth part =part nine2.编号的事物若数字较大, 一般用基数词放在名词后面来表示, 名词前一般不用定冠词, 如: room 302, page 215, No. 101 middle school3.在表示年月日时, 年用基数词, 日用序数词, 年的读法是, 从后往前, 将年份分成两位一段, 依次读出每一段
5、即可, 如: April 5,1976 读作April (the) fifth, nineteen seventy-six; October 1, 1949读作October the first, nineteen forty-nine; 年份1905读作nineteen hundred and five; 年份1800读作eighteen hundred; 年份2000读作year two thousand; 年份502 B.C.读作five o two B C; 年份A.D. 620读作six twenty A D4.表示时间时用基数词:.表示几点整的说法: It is five (ocl
6、ock).表示几点过几分的说法: 若不超过30分钟, 用past表示过几分; 若超过30分钟, 用to表示差多少分到几点, 如: 3:05 =five past three, 5:20 =twenty past five; 8:35 =twenty-five to nine; 12:50 =ten to one.表示几刻钟的说法, 如: a quarter, three quarters.表示上午,下午某时间, 如: 8:00 a.m., 4:15 p.m.时刻也用24小时制读法, 只须依次读出点钟数和分钟数, 整点钟时, 需在最后加读hundred ( hours), 如: 18:45读作e
7、ighteen forty-five, 18:00读作eighteen hundred ( hours ), 以上提到的3:05, 5:20, 8:35分别也可读作three five, five twenty, eight thirty-five5.表示加减乘除的说法:数学运算的加减乘分别用plus, minus, times, divided by表示a. How much is fifteen plus two?b. How much is eight minus seven?c. How much is twelve times twelve?d. How much is eighty
8、-one divided by nine?e. Five plus three is / equals eight.f. Five minus three equals / leaves two.g. Five times three makes / is fifteen.h. Fifteen divided by three equals five.十五除以三等于五6.表示倍数的说法:a. This room is three times bigger than that one.b. The dictionary is four times thicker than that book.c
9、. The earth is 49 times the size of the moon.7.表示百分比的说法: 基数词+ percent8.有些基数词可以构成固定词组, 如: one by one, twos and threes三三两两9.基数词可以与度量单位连用: twenty meters deep, ten meters long, one hundred yards10.分数的表示法: 分子用基数词, 分母用序数词, 若分子大于1, 则分母用序数词的复数形式, 如: one third, two tenths, two thirds. 有些分数可以用half, quarter表示,
10、 如: three quarters11.小数: 小数点读作point, 小数点前面的数字读作一个完整的基数词, 小数点后面的每位数字依次用基数词读出, 如: 3.4读作three point four, 0.2读作zero point two, 8.97读作eight point nine seven12.某些数字的读法与写法, 如: $10.20读作ten dollars and twenty cents; 35 读作thirty-five degree; -20 读作twenty degree below zero或minus twenty degree; Napoleon III读作N
11、apoleon the third; World War II读作World War two或the second world war.13.年龄的表示方法:a. The boy is ten years old.b. The boy is at the age of ten.c. He is a ten-year-old boy.d. The boy is of ten years.14. in ones + 整十数的复数形式, 表示在某人几十多岁的时候, 如:a. He became famous in his thirties.15. in the 1930s / 1930s表示在二十世
12、纪三十年代16. 序数词前一般要用the, 但表示又一,再一的概念时, 序数词前也可以用a / ana. They plan to buy a second house. 他们计划再买第二房子四.选择使用数字或文字表示数的场合:1.一般来说, 两位数以内的数目用文字表示, 超过两位数的数目用数字, 如:a. There are forty-five students in our class.b. There are about 2,100 students in our school.2.在句首的数目多用文字表示:a. One hundred and two voters are against the project.3.基数词的复数形式多用文字表示:a. There are three twos in six. 6之内有三个2.b. He became famous in his fifties.2.在句首的数目多用文字表示:a. One hundred and two voters are against the project.3.基数词的复数形式多用文字表示:a. There are three twos in six. 6之内有三个2.b. He became famous in his fifties
