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1、数词,热身练习1._ tress were planted on the mountain last year.A.Thousands of B.Thousand of C.Five thousand of D.Five thousands.2_ of the students are girls in our class ATwo three BTwo threes CTwo thirds DSecond three3.-When was he born?-he was born on _.A.second of October B.the October three C.October t
2、he second D.three of October,数词的构成,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 90
3、ninety 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,基数词的构成,1.If
4、a=3,b=4,whats the answer to the problem,a+2ab+1=?the answer is_.A.twenty eight B.twenty-eighth C.twenty-eight2.In our school several _ students are able to search the Internet.A.hundred of B.hundreds of C.hundred,3.Many _ sheep were killed in the accident.A.thousands of B.thousand C.thousands4.There
5、 are over nine _ workers in the factory,but _ of young people hope to work in it.A.hundred;hundreds B.hundreds;hundreds C.hundreds;hundred,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,
6、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
7、，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,thousands of people became homeless.,2、“几十”的复数形式可以表示：在某人几十岁时-in+ones+整十基 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
8、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 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.,1.The winner is _.He is an _ boy.A.eight-year-old;eight years old B.eight years old;eight-year-old C.eight-years old;eight-year-ol
9、d2.He came to China _.A.at the age of 20 B.when he is 20 C.at age of 20,年龄,3.He graduated in _ of _ century.A.the sixtieth;twenty B.sixty;the twentieth C.the sixties;the twentieth4.He got the prize _.A.in his fifties B.in fifties C.in his fifty,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
10、 twenty-one,3)15分钟：a quarter 30分钟：a half 9:15 a quarter past nine12:30 half past twelve 表示“整点”时，在基数词后加oclock;9:00 oclock,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
11、面要加the；The first truck is carrying a food basket John lives on the fifteenth floor She 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 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
12、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/Page Thirty-two,Room 305,Bus No.12=the No.12 bus,第一课第32页第305房间第12路公共汽车,15,分子 基数词分母 序数词,one fifth,27,分子 1分母+s,two sevenths,14,分子 a分母 quarter,a quarter,34,three quarters,12,a half,13,three
13、 and one third,3,基数词+and+分数,分数百分数,80%,基数词+percent,eighty percent,half/(百)分数+of+可数名词复数 谓语动词用复数half/(百)分数+of+不可数名词谓语动词用单数,3.78,three point seven eight,Discount，off 用于表示“打折”打六折 40%off a 40%discount,1._ of the students _ boys in Class A.Two three;are B.Two thirds;are C.Two thirds;is2._ of her money _ sp
14、ent on clothes.A.Two three;are B.Two thirds;is C.Two third;is3._ the teachers in our school is about one hundred,and _ of them are women teachers.A.The number of;two third B.The number of;two thirds C.A number of;two thirds,一个半小时两个半小时,two and a half hours=two hours and a half,one and a half hours=on
15、e hour and a half,半的表示法,1.The boy always stays there for _.A.one and half hour B.one and a half hour C.one and a half hours2.The old man drank_ beer.A.two bottles and a half B.two and a half bottle C.two bottle and a half,1999 nineteen ninety-nine two thousand and eight1949年10月1日 读作:October(the)firs
16、t,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,1.The accident happened on_.A.April 5,2001 B.2001,April 5 C.April 2001,52.I was born _.A.in March 8,1993 B.on J
17、uly 9,1994 C.on May,1995,20世纪90年代,in the 1990s,数词的表示法 年代世纪,in the,nineteen,nineties,表示“在世纪”,用序数词。在20世纪 写作：in 20th century 读作：in the twentieth century,1.There will be more chances in _ century than in _ century.A.twenty-one,twenty B.twenty-first,twentieth C.the twenty-first,the twentieth2.The city ch
18、anged a lot _.A.in 1980s B.in the 1980s C.in the 1980,一倍 once，两倍 twice，三倍 three times(三倍或以上 基数词times),数词的表示法 倍数,This box is five times as big as that one.=This box is four times bigger than that one.,A+be+倍数+as+adj.原+as+B.A是B的 倍 C+be+倍数+adj.比+than+D.C比D 倍,1.This building is _ that building.A.three t
19、ime as tall as B.twice taller than C.three times as taller as2.我的箱子比你的重六倍!My box is _ yours.,six times heavier than,seven times as heavy as,6+511 Six plus five is eleven 或 Six and five is eleven.11-65 Eleven minus six is five.4520 Four multiplied by five is twenty.或 Four times five is twenty.2045 Tw
20、enty divided by four is five.,加减乘除式的表达方法,选择填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight Beight five Ceight o five3Eight plus eight is_.Asixteen Bsixty-four Cone4He is an _boyAeight years Beight-year-old Ceight-years-old5We will have a_ wa
21、lkAten minutes Bten minutes Cten-minutes,B the third,Ceight o five,Asixteen,Beight-year-old,Bten minutes,6The wall is_.Afour meters long Bfour meter long Cfour-meter long7Whats the date today?Its_AMarch the eight BMarch eighthCeight，March8It happened in the 1040sA in the forties of the eleventh cent
22、uryB in the forties of the tenth centuryC in the forty9About_ of the earths surface is covered with water.A.three-fours B.three-fourth C.three-fourths,Afour meters long,BMarch eighth,A in the forties of the eleventh century,C.three-fourths,10.He went down to the village which was _miles away from th
23、e city.A.three hundreds B.three hundredC.three hundreds of,B.three hundred,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、默写基数词和序数词2、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!,
