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1、数词Numeral,数词,基数词,序数词,数量,顺序,基数词的构成,1）112, 独立成词。 one two three four five six seven eight nine ten eleven twelve2）13-19, 由39 + teen构成。 14fourteen 16-sixteen 17-seventeen 19nineteen 特殊拼写: 13 thirteen 15-fifteen 18eighteen 3）2090, 以-ty结尾。 20twenty 30-thirty 40forty 50fifty 80-eighty 60-sixty 70-seventy 9
2、0ninety 4）2199， 两位数，十位与个位之间有 “”。 21 twentyone 55 fiftyfive 99 ninetynine5）101999，三位数，百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three,29,431,500,7,6,thousand,hundred,million,billion,and,6) 1，000以上数目,从右向左每三位用“，” 分开,分别读为thousand , million, billion,基数
3、词的构成,序数词的构成,1) 13, first, second, third 。2) 419, 相应基数词+th, 特殊拼写:fifth, eighth, ninth, twelfth。3) 2090, y变成ie +th,如twentieth。4) 2199, 只把个位的基数词变成序数词 如twenty-first。5) 序数词缩写-数字最后两字母 如1st, 2nd, 3rd ,4th,基变序,有规律,一、二、三，特殊记，面目全非要注意，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，(five, twelve)见“y”变成“i”和“e”，词尾加上“th”，(twenty,
4、thirty,ninety)若是遇到几十几，只变个位就可以。序数词缩写记清楚,数字后跟两字母。,(序数词构成规律),基数词的用法,1、表示具体数目,hundred, thousand, million不用复数 表示不确定数目,用复数。即hundreds of(数百), thousands of(数千), millions of(数百万)+ 名词复数, 可以用many/several修饰，但不能与具体数目连用。 1) Our country has a population of 1,300 million people. 2) There are three thousand students
5、 in our school. 3) After the war, thousands of people became homeless. 4) Several / Many thousands of trees must be planted every year.,2、 “几十”的复数形式可以表示： 几十多岁 - in + ones + 数词复数 年 代 - in + the +数词复数 1) He died in his forties四十多岁 2) In the nineties, most people go to work by bike. 90年代,3、“基数词+名词” 的合成
6、形容词作定语， 中间有连字符“”,当中的名词用单数。 a 3 year old girl a seven-day holiday,4、表计量- “基数词+度量单位+形容词” The classroom is 7 meters long, 6 meters wide and 3 meters high.,5、表示时刻 (介词用at)1)顺读法-先时后分, “几点几分” 9:30 nine thirty 6:21 six twenty-one,3) 15分钟：a quarter 30分钟：a half 9:15 a quarter past nine 12:30 half past twelve,
7、2)逆读法-先分后时 表示“几点过几分”，半小时以内，介词用past 分钟数+past +钟点数 10:10 ten past ten 8:20 twenty past eight,表示“几点差几分”，半小时以上，介词用to 60减原分钟+ to + (下一个)钟点数 9:50 ten to ten 7:40 twenty to eight,(1)序数词作定语，前面要加the； The first truck is carrying a food basket John lives on the fifteenth floor She is my first English teacher.(
8、2)有时加a/an，“再一”，“又一” 的意思Well have to do it a second time Shall I ask him a third time？ When I sat down，a fourth man rose to speakThey had a second child in 1988,序数词的用法,编号表示法,编号在前，名词在后，用序数词，前面有the编号在后，名词在前，用基数词，注意首字母大写房间号码和电话号码要一个一个分别读,The First Lesson（在句子中不大写）Lesson One,the thirty-second pagePage 32
9、/ Page Thirty-two,Room 305,Bus No.12,第一课第32页第305房间第12路公共汽车,1/4 one-fourth a (one) quarter3/4 three-fourths three quarters 2/3 two-thirds1/2 a (one) half 半年 half a year 半小时 half an hour一年半 one and a half years one year and a half,分数表示法,分子用基数词，分母用序数词。分子大于1时，分母加-s。,1999 nineteen ninety-nine two thousan
10、d and eight1949年10月1日 读作: October (the) first, nineteen forty-nine (月-日，年) the first of October, nineteen forty-nine（日-月，年）写作: October 1st,1999(日用缩写，月-日-年) October 1, 1999 (日用数字) 1st October,1999日-月，年,年份、日期表达法,年用基数词表示,两位一读,介词用in日用序数词表示,介词用on,表示“在世纪”, 用序数词。 在20世纪 写作：in 20th century 读作：in the twentiet
11、h century,【实例解析】,1. (2004年上海市徐汇区中考试题) About _ students in our class can describe that place in English. A. three-fifths B. three-fifth C. third-five D. third-fifths 答案：A。该题考查的是分数的表示法。分子用基数词表示，分母用序数词表示。分子大于1时，分母应加-s，因此应选A。,2. (2004年河北省中考试题) Nine _ pounds a week? Thats very good. A. hundred of B. hund
12、reds of C. hundreds D. hundred 答案：D。该题考查的是数词的用法。Nine hundred是一个具体的数量，这是数词不能用复数形式，后面也不能加of。所以应选D。,【中考演练】,选择题答案及分析15: B D D A B610: D C B A A1115: C A B C C,中考听力题 数词考点,1/21/31/424/25 3/43,three fourths / three quarters,one third /a third,twenty-four twenty-fifths,three and six sevenths,one quarter /a
13、quarter/ one fourth,a half,Can you read a fraction?,July1,1921,October 1,1949,August 1, 1927,May, 1922,When were they founded?,PRC,League,PLA,CCP,The _was founded on /in_,What is the time?,six/six oclock,four o five/ five past four,seven fifteen/a quarter past seven,nine twenty/ twenty past nine,nin
14、e thirty/half past nine,six forty/twenty to seven,1.What is ten and eight? 2.How old are you?3.When were you born?4.What class are you in?5.How many students are there in your class?6.Whats your telephone number?7.How long is the Great Wall?8.Whats the population of China?9.When do you usually get u
15、p?,Ask and answer in pairs,Try your best ! speak loudly and quickly!,test,14,40,50,15,17,70,90,19,18,80,60,16,Summary(小结),1.基数词的构成（6点）2.序数词的构成（5点，记歌谣）3.基数词的用法(hundred, thousand,million、岁数与 年代、“基名”、计量、时刻）4.序数词的用法(加the, a/an)5.编号表示法(可用序数词/基数词,注意加the或大写)6.分数表示法(分子:基数 分母:序数)7.年份、日期、的表达法(年:基数 日、世纪:序数),Homework1、选择题2、默写基数词和序数词3、改错练习4、writing-注意大小写，标点，连接词等 今天是2008年4月2日,星期三, 天气晴朗。早上我8：30分起床，很快复习完第五单元，然后坐5路公汽去了金港湾超市（Golden Gulf Mall） 。超市里面大约有1000人，他们当中约40%的人是学生。在三楼我碰到一个老外Mr. Will，他比我高一英尺。我们交谈了半个小时。我多么希望能和他再谈一次。买了2.6公斤苹果，三瓶可乐，我高兴地回家了。,Thank you !,
