2023年中考英语语法复习—数词

数词讲练 一、基数词和序数词 1. 基数词和序数词的表达方法: 基数词是用于表示数目的多少的词。序数词是表示顺序的先后的词。两者之间可以互相转换。如: one- first two- second three- third four- fourth five- fifth nine- ninth eleven- eleventh twelve- twelfth thirteen- thirteenth fourteen- fourteenth fifteen- fifteenth twenty- twentieth twenty-one- twenty-first twenty-two- twenty-second twenty-three- twenty-third twenty-nine- twenty-ninth Thirty- thirtieth thirty-nine- thirty-ninth Forty- fortieth forty-nine- forty-ninth Fifty- fiftieth fifty-nine- fifty-ninth ninety-nine- ninety-ninth 2.序数词的用法(举例) 1) 经常在其前加the。如: My brother is the twenty-ninth(二十九) in his class. 我的哥哥在他们班是第29。 His birthday is on April the fifth. 他的生日在4月5号。 2) 前面不加the。 (表示比赛名次时)如: She is first in the math exam. 她在数学考试中得了第一。 I won first in the match. 我在比赛中赢了第一。 (序数词前有其它修饰词时)如: my first son 我的第一个儿子 I will have my sixteenth (十六)birthday. 我将会过16岁生日。 (用a修饰,表示又一次,再一次)如: Have a third try, you will do it well. 再试一次,你将会做得好。 3. 数字的读法。如: 322 three hundred and twenty-two 45,682 forty-five thousand six hundred and eighty-two 二、分数 1.分数表达法: 分数的分子用基数词,分母用序数词。当分子是1时,分母用单数;当分子是复数时,分母用复数。分子和分母之间可以加连字符号,也可以不加。如: 1)three fourths = three quarters四分之三 2)one fourth = a quarter 四分之一 3)five eighths; five-eighths八分之五 2.分数的用法: 分数修饰名词时,经常在其后加of the。分数做主语,谓语要和分数修饰的名词保持一致。如: 1) Two thirds of the students are running. 2/3的学生正在跑。 2) Two thirds of the apple goes bad. 这个苹果的2/3坏了。 三、百分比 1.百分比表达法。如: five percent 5% 2. 百分比的用法: 百分比修饰名词时,经常在其后加of the。百分比做主语,谓语要和分数修饰的名词保持一致。如: 1) Sixty percent of the students go to school by bus. 60%的学生坐公共汽车上学。 2)Sixty percent of the water has been drunk already. 60%的水已经被喝了。 四、hundred, thousand, million, billion的用法: hundreds of 成百上千 thousands of 成千上万 millions of 上百万 four hundred (and) fifty-six books 456本书 four hundred books 400本书 五、时间表达法 1.当分钟数少于30时,用past。如: 6:05 six o five/ five minutes past six 7:10 seven ten/ ten past seven 8:15 eight fifteen/ a quarter past eight 2.当分钟数等于30时,用half past。如: 11:30 eleven thirty/ half past eleven 3.当分钟数大于30时,用to,分钟数用60减去原分钟数,小时数用原小时数加上1。如: 12:35 tw