教育专题：小牟数词课件.ppt

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1、数词复习数词复习数数词词基数词基数词 序数词序数词数量数量顺序顺序一一.基数词的构成基数词的构成1）112,独立成词。独立成词。one two three four five six seven eight nine ten eleven twelve2）13-19由由39+teen构成。构成。14fourteen 16-sixteen 17-seventeen 19nineteen特殊拼写特殊拼写:13 thirteen 15-fifteen 18eighteen3）2090,以以-ty结尾。结尾。20twenty 30-thirty 40forty 50fifty 80-eighty 60

2、-sixty 70-seventy 90ninety 4）2199，两位数，十位与个位之间有两位数，十位与个位之间有“”。21 twentyone 55 fiftyfive 99 ninetynine二二.基数词的读法基数词的读法1 1、百位和十位间用、百位和十位间用 and 连接连接,十位和个位间用十位和个位间用 连接连接three hundred and twenty-one321 101840 2 2、右往左数、右往左数,三位一组三位一组,逗号隔开逗号隔开.依次是依次是 thousand(千千)million (百万百万)billion (十亿十亿)one hundred and one

3、eight hundred and fortyfour thousand three hundred and twenty-oneseven million,six hundred and fifty four thousand three hundred and twenty-one7,654,3211,987,654,32143214,321one billion nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twenty-one1.hundred th

4、ousand (表示具体数字表示具体数字)million billion2.hundreds thousands (表示概数表示概数)millions billions三三.基数词的用法基数词的用法具体数目具体数目 +ofsome/many/several hundreds of3、another+基数词基数词+名名=基数词基数词+more+名名 例：例：-Do you have enough students to carry the boxes?-No,I think we needstudents.A.another B.three others C.more three D.three

5、 more1.If 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.hunderd of B.hunderds of C.hundred3.Many _ sheep were killed in the accident.A.thousands of B.thousand C.thousan

6、ds4.There 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四四.序数词的构成序数词的构成1)13,first,second,third。2)419,相应基数词相应基数词+th,特殊拼写特殊拼写:fifth,eighth,ninth,twelfth。3)2090,（整十旳数）（整十旳数）y变成变成ie+th,如如twentieth。4)2199,只把个位的基数词变

7、成序数词只把个位的基数词变成序数词 如如twenty-first。5)序数词缩写序数词缩写-数字最后两字母数字最后两字母 如如1st,2nd,3rd,4th基变序基变序,有规律有规律,一、二、三，特殊记，一、二、三，特殊记，结尾母结尾母t,d,d(first,second,third)，加加th从从4起，起，八少八少“t”，九去，九去“e”，(eighth,ninth)“ve”要用要用“f”替，替，(five,twelve)见见“y”变成变成“i”和和“e”，词尾加上，词尾加上“th”，(twenty,thirty,ninety)若是遇到几十几，只变个位就可以。若是遇到几十几，只变个位就可以。

8、序数词缩写记清楚序数词缩写记清楚,数字后跟两字母。数字后跟两字母。五五.序数词构成规律序数词构成规律(1)序数词作定语，前面要加序数词作定语，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.(2)有时加有时加a/an，“再一再一”，“又一又一”的意思的意思Well have to do it a second time Shall I ask him a third time？When I sat down，a

9、fourth man rose to speakThey had a second child in 1988六六.序数词的用法序数词的用法 月日年月日年 在在2008年年10月月1日日七七.数词的表示法数词的表示法 年月日年月日on October the first,two thousand and eight日日the+序数词序数词月月（首字母大写）（首字母大写）月日与年之间月日与年之间用用 ，分开分开年年（用（用基数词基数词表示表示两位两位读）两位两位读）on August the ninthin May,two thousand and ten有日用有日用 on 无日用无日用inon

10、 Oct.1st,2008 月日月日 在在8月月9日日 月年月年 在在2010年年5月月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 July 9,1994 C.on May,199520世纪90年代in the 1990s1)He died in his forties四十多岁四十多岁七七.数词的表示法数词的表示法 年代世纪年代世纪in the“几十几十”的复数形式可以表示：的复数形式可以表示：几十多岁-in+ones+

11、整十基数词复数 年 代 -in+the+整十基数词复数 nineteen nineties 2).In the nineties,most people go to work by bike.90年代年代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 changed a lot _.A.in 1980s B.in the 1980s C.in the

12、 19803.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时间类型时间类型表示法表示法例例读法读法整点整点基数词（基数词（+oclock)1:0030分钟分钟分钟分钟+past+小时小时 2:10=30 分钟分钟half+past+小时小时3:3030分钟分钟（60-分钟）分钟）+to+（小时（小时+1）4:

13、40分钟逢分钟逢15即即 一刻钟一刻钟a quarter5:156:45简化法简化法按顺序读基数词按顺序读基数词7:50one oclockten past twohalf past threetwenty to fivea quarter past fivea quarter to sevenseven fifty表示在几点钟用介词表示在几点钟用介词 at七七.数词的表示法数词的表示法 时间时间1.Its already 7:40 now.When will the film start?_.We still have five minutes.A.A quarter to seven B.

14、Seven past forty-five C.A quarter to eight15分子分子 基数词基数词分母分母 序数词序数词one fifth27分子分子 1分母分母+stwo sevenths14分子分子 a分母分母 quarter one-fourth a quarter34three-fourths three quarters12a half13three and one third3基数词基数词+and+分数分数七七.数词的表示法数词的表示法 分数百分数分数百分数80%基数词基数词+percenteighty percent另：另：half/(百百)分数分数+of+可数名词复

15、数可数名词复数 谓语动词用谓语动词用复数复数 half/(百百)分数分数+of+不可数名词不可数名词 谓语动词用谓语动词用单数单数3.78three point seven eight1._ of the students _ boys in Class A.Two three;are B.Two thirds;are C.Two thirds;is2._ of her money _ spent on clothes.A.Two three;are B.Two thirds;is C.Two third;is3._ the teachers in our school is about on

16、e 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一个半小时一个半小时两个半小时两个半小时 two and a half hours=two hours and a half one and a half hours=one hour and a half七七.数词的表示法数词的表示法 半的表示法半的表示法半年半年 half a year 半小时半小时 half an hour一年半一年半 one and

17、a half years one year and a half1.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一倍一倍 once，两倍，两倍 twice，三倍三倍 three times (三倍或以上三倍或以上 基数词基数词times)七七.数词的表示

18、法数词的表示法 倍数倍数 This box is four times as big as that one.=This box is four times bigger than that one.这个盒子比那个大这个盒子比那个大四四倍。倍。A+be+倍数倍数+as+adj.原原+as+B.A是是B的的 倍倍 C+be+倍数倍数+adj.比比+than+D.C比比D 倍倍1.This building is _ that building.A.three time as tall as B.twice taller than C.three times as taller as2.我的箱子比

19、你的重六倍我的箱子比你的重六倍!My box is _ yours.six times heavier thanseven times as heavy as207房房 三年级一班三年级一班第五部分第五部分第一课第一课3 号汽车号汽车第一中学第一中学Room 207 Class one，Grade threepart five=the fifth partlesson one=the first lesson Bus No.3=the No.3 busNo.1 Middle School七七.数词的表示法数词的表示法 编号编号编号表示法编号表示法编号在编号在前前，名词在后，用，名词在后，用序序

20、数词，前面有数词，前面有the编号在编号在后后，名词在前，用，名词在前，用基基数词，注意首字母数词，注意首字母大写大写房间号码和电话号码要一个一个分别读房间号码和电话号码要一个一个分别读结构结构:名词名词(首字母要大写首字母要大写)+基数词基数词=the+序数词序数词+名词名词 Lesson One=the first lesson 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-old He

21、 came to China _.A.at the age of 20 B.when he is 20 C.at age of 20七七.数词的表示法数词的表示法 年龄年龄七七.数词的表示法数词的表示法 计量计量 “基数词基数词+名词名词”的的合成形容词合成形容词作定语，中作定语，中间有连字符间有连字符“”,当中的名词用当中的名词用单数单数。表计量表计量 “be+基数词基数词+度量单位度量单位+形容词形容词”The classroom is 7 meters long,6 meters wide and 3 meters high.a 3 year old girl a seven-day holiday The river is about _.A.6,000 meters long B.6,000-meters-long C.6,000-meter-long