分享
2023年英语中基数词与序数词的区别和用法.docx
下载文档

ID:1358710

大小:12.72KB

页数:5页

格式:DOCX

时间:2023-04-20

收藏 分享赚钱
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,汇文网负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。
网站客服:3074922707
2023 英语 基数 序数词 区别 用法
英语中基数词与序数词的区别和用法 篇一:英语基数词和序数词专题 数词 一、基数词和序数词〔cardinal and ordinal numbers〕: 基数词表示数目,序数词表示顺序。 1. 基数词 〔1〕1-12 特别记; 13-19 要加-teen;几十-ty做结尾;几十几更易记。 〔2〕留意13 thirteen, 15 fifteen, 18 eighteen, 20 twenty, 30 thirty, 40 forty, 50 fifty的书写。 〔3〕hundred 百, thousand 千,million 百万, billion十亿的用法类似e.g. Hundred: one/ two/several hundred; hundreds of … 成百上千… 2. 序数词: 〔1〕基数词变序数词的口诀:基变序,有规律,结尾加上-th;一、 二、三特数记;八去t,九去e;-ve要用-f替;单词-ty做结尾,变-y为i,再加-eth. 〔2〕留意1 first, 2second , 3third, 5 fifth, 8 eighth, 9 ninth的拼写。 二、分数、小数、百分数〔fracctions、Decimals、Percentage〕 1.分数: 分子用基数词表示,分母用序数词表示,中间的连字号可用不可用。当分子大于1时,作分母的序数词用复数方式。e.g. 二分之一 a/one-half 三分之一 a/one third 四分之一 a/one-fourth 二又五分之一 two and one-fifth 2.小数: 读法:在小数点后,我们单独读出每个数字。小数点读作point。 小数点中的零读作zero, nought或o// e.g. .3 point three 7.145 seven point one four five 36.36 thirty-six point three six 3. 百分数 百分数用基数词或小数与百分号两局部构成。e.g. 20% twenty percent47% forty-seven percent 30.45% thirty point four five percent 三、日期和年份的表示〔date and year〕 on May 27 读作:On May (the) twenty-seventh on 27th May 读作:On the twenty-seventh of May in 1993 读作:in nineteen thirty-three in 20ll 读作:in two thousand and eleven 四、时间和钟点表示: 7:15 读作 seven fifteen / a quarter past seven 5:30 读作 five thirty/half past five 6:55 读作 six fifty-five /five(minutes) to seven 9:10 读作 nine ten a.m. at 8:00 读作 at eight 或 at eight o’clock 五、年龄表示: 1. 基数词+表示年龄单位的词+old, 口语中常可省略years old. e.g. The girl is only three (years old.) 2. age(名词或动词) She was then forty years of age. /she was then aged forty(years). “at the age of +基数词〞表示“在…岁时〞,通常作状语。e.g. Julie can swim at the age of eight. 3.“基数词-year-old〞的复合描述词,意为“…岁的〞,一般作定语修饰名词。e.g. Sandy is a six-year-old child. 4. in one’s +整十基数词的复数方式:这一构造表示“在某人几十多岁时“。e.g. My grandfathr died in his nineties. teens 表示 “十多岁〞〔13-19岁〕。e.g. The boy was in his teens. 这男孩只有十多岁。 He is not yet out of his teens. 他还不满20岁。 六、数学运算表达〔Arithmetic Expressuib 〕 Add 3 and 9. 3 plus 9 equals/is 13 Subtract 3 from 9. 9 minus 3 equals/is 6. Multiply 3 by 9. 3 multiplied by 9 equals/is 9 Divide 9 by 3 9 divided by 3 equals/is 3. +plus(介词)/ -minus (介词) / × multiplied(描述词性质的过去分词) / ÷ divided (描述词性质的过去分词) +add(动词)/ -subtract(动词) / × multiply(动词) / ÷ divide(动词) 【易错点提示】 1. 分数和百分数做主语时,谓语的单复数取决其后面of构造中的名 词。留意区别下面两句话: 2. 基数词能够用在有连字符的合成描述词中,留意其中的名词前无冠词。e.g. a two-day holiday=two days’ holiday a ten-minute walk=ten minutes’ walk 有连词符的复合描述词在剧中只能充当定语,不能作表语。 3. 在20世纪30年代:in the 1930s 在30年代:in the 30s 在某人30几岁时:in one’s thirties 4. 留意下面的不同表达方式: Lesson Twelve = the Twelfth Lesson Gate Five= The Fifth Gate Class one/Grade〔Two〕two=the ninth grade/ page nine/ Room 401/Channel Eight 5. 序数词在表示地名时的用法: Fifth Avenue 〔序数词前无冠词〕 6. 序数词用在奖项前面的用法:win first prize (序数词前无冠词) 7. 序数词表示在原来数字的根底上的 “再、又〞的用法: I have had two cakes. I want to have a third one. 8. 一次:once两次:twice 三次: three times 9. 倍数的表达: 〔1〕“倍数+描述词/副词的比较级+than〞表示“比大几倍〞e.g.This rope is three times longer than that one. 〔2〕“倍数+as+描述词/副词+as〞表示“是的几倍〞e.g. It is five times as big as Europe. The poison of the killer bee is twice as dangerous as the poison of other bees. 〔3〕“倍数+表度量的名词〔size,length,width〕+of〞表示“是的几倍〞。e.g. The earth is 49 times the size of the moon. 【真题典藏】 1. Linton is interested in Chinese history and this is his _____ visit to Beijing. (four) (2023年第61题) 2. Eric, the _______ son of the family, has a special interest in physics.(three) (2023年中考题59题) 3.Alex is ______ years old and is taken good care of in the kindergarten. 〔fourth〕(2023年中考题58题) 【实战演练】 1.The TV news reported the celebration of the old man’s _______birthday. (hundred ) 2. Could you tell me if you live on the ______floor of that highrise (twelve) 3. Please open your book at page________. Let’s read the text. (fifth) 篇二:基数词与序数词的用法 基数词与序数词的用法 基数词 A.从1——10one,two,three,four,five,six,seven,eight,nine,ten. B.从 11——19eleven,twelve, thirteen, fourteen, fifteen, sixteen, seventeen,eighteen, nineteen. 这里除 eleven, twelve, thirteen, fifteen, eighteen为特别方式外, fourteen,sixteen,seventeen,nineteen都是由其个位数方式后添加后缀-teen构成。 C.从 21——99 整数几十中除twenty,thirty, forty,fifty,eighty为特别方式外,sixty,seventy,ninety都是其个位数方式后添加后缀-ty构成。表示几十几时,在几十和个位基数词方式之间添加连字符“-〞 21 twenty-one76 seventy-six D.百位数 648 six hundred and forty-eight E.千位数以上 ,648 two thousand six hundred and forty-eight F.基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数方式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词那么以复数方式出现。 There are hundreds of people in the hall. 里有数以百计的人。 Thousands and thousands of people come to visit the Museum of Qin Terra-Cotta Warriors and Horses every day. 每天有成千上万的人来参观秦兵马涌博物馆。 They went to the theatre in twos and threes. 他们三三两两地来到了剧院。 G.表示人的不确切岁数或年代,用几十的复数方式表示。 He became a professor in his thirties. 他三十多岁时成为了教授。 基数词变序数词的口诀 基变序,有规律, 词尾加上th,(fourth,sixth) 一,二,三,特别例, 结尾字母t,d,d;(first,second,third) 八去t,九去e,(eighth,ninth) ve要用f替;(fifth,twelfth) ty将y改成i, th前面有个e; 假设要碰到几十几, 前用基来后用序。 1st(first) , 2nd (second) , 3rd (third), 4th (fourth), 5th (fifth), 6th (sixth), 7th (seventh), 8th (eighth), 9th (n

此文档下载收益归作者所有

下载文档
你可能关注的文档
收起
展开