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1、数词复习数词基数词 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 18eighteen3）2090, 以-ty结尾。20twenty 30-thirty 40forty 50fifty 80-eighty 60-sixty 70-seventy 90ninety 4）2199，
2、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 one840 eight hundred and forty693 six hundred and ninety-three29,43150076,thousandhundredmillionbillionand6) 1，000以上数目,从右向左每三位用“，”分开,分别读为thousand , million, billion 基数词的构成序数词的构成 1) 13, first, secon
3、d, 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, thirty,ninety) 若是遇到几十几，只变个位就
4、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 in our school.3) After the war, t
5、housands 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
6、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 wideand 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 twelve2)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
7、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to60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 basketJohn lives on the fifteenth floorShe is my first English teacher.(2)有时加a/an，“再一”，“又一” 的意思 Well have to do it a second tim
8、e 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 page Page 32 / Page Thirty-twoRoom 305Bus No.12第一课第32页第305房间第12路公共汽车
9、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 yearsone 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 2008 two thousand and eight1949年10月1日 读作: October (the) first, nineteen f
10、orty-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 twentieth century 【实例解析】1. (2004年上海市徐汇区中考试题)About _ students in our cl
11、ass 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. hundreds ofC. 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
12、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1/2 1/3 1/4 24/25 3/4 3three fourths / three quartersone third /a thirdtwenty-four twenty-fifthsthree and six sevenths one quarter /a quarter/ one fourtha halfCan you read a fraction? July1,1921October 1,
13、1949August 1, 1927May, 1922When were they founded?PRCLeaguePLACCPThe _was founded on /in_What is the time?six /six oclockfour o five / five past fourseven fifteen /a quarter past sevennine twenty / twenty past ninenine thirty /half past ninesix forty /twenty to seven1.What is ten and eight? 2.How ol
14、d 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 up?Ask and answer in pairsTry your best ! speak loudly and quickly! test14 40
15、 50151770901918806016Summary(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)Homework 1、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。
