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1、数词数词的概述及用法:基数词:表示人或事物数量多少的词.序数词:表示人或事物的顺序的词.往往和定冠词the连用.一.基数词.1.基数词的读法.112 : one two three four five six seven eight nine ten eleven twelve(2) 1319:词尾力口teen: thirteenfourteen fifteen sixteenseventeen eighteennineteen(3) 20, 30, 40, 50, 60, 70, 80, 90 :seventy eighty ninety99-ninety-nine逢十词尾加ty: twen
2、ty thirty forty fifty sixty (4) 21-99:在十位与个位之间加连字符构成.21 twenty-one(5)101-999 :先说几百,再加and,再加末尾两位数或个位数.101-one hundred and one238two hundred and thirty-eight(6) 1000以上的数:先将数字从右往左数,每三位数用一个逗号隔开,从右往左第一个逗号表示“千” thousand;第二个逗号表示“百万”读million;第三个逗号表示“十亿”读billion;英语中无“万”这个词,我们可以用“几十个千(thousand) ”表示几万,“几百个千 (t
3、housand) 11表示几十万。18, 657, 421= eighteen million, six hundred and fifty-seven thousand, four hundred4. 7:00d. twelve fifteen5. 9:30e. seven oclock五.填空题1 . Chinese is my(one/ first) class.2. My birthday is on J3. This is Mays t birthday,you can see twelve candles on the cake.4. There are days in a wee
4、k,and Monday is the day of theweek.5. three(序数词)6. nine(序数词)7. eight(序数词)8. 103房间(汉译英)9. 七十八元(汉译英)10. 五(3)班(汉译英)11. 九点三十五分(汉译英)六、按要求完成句子。1. Linda does her homework at five fifty.(改为同义句)Linda does her homework at2. What is the time?(改为同义句)is it?4. Mr Green goes to work at seven ten every day.(划线部分提问)
5、Mr Green to work every day?参考答案:、1. F【详解】句意:一这些风筝多少钱? 一它们十五元。根据所给的图片,可知是五十元, 句子与图片不相符,故答案为F。2. T【详解】句意:一这个梨多少钱? 一两元。所给图片是二,故对话与图片一致,故答 案为T。1. B【详解】句意:我家有 人。该空用基数词表示数量,A第八;B A; C第三;故选B。2. A【详解】句意:4月5日是他的 生日。A第三;B三;C九;该空做birthday的定语,故用序数词限定,故选A。3. C【详解】句意:八月是一年中的 月。A七;B第九;C第八;根据常识可知是第八个月,故选C。4. A【详解】句
6、意:五加六是Ho eleven H,故选A。5. C【详解】句意:票价是10美元,周三半价。所以星期三是。10美元的半价是5 美元,故选C。6. A【详解】句意:一我15岁了。你多大了? 一我比你大。我已经 岁了。根据常识得知我比你大,也就是比15岁大,故选A。7. C【详解】句意:迈克的妹妹四岁了。基数词+yearsold几岁了,故选C。8. B【详解】句意:我们可以乘1路公共汽车去博物馆。N。.和1st都代表序数词,二者不 能同时使用,排除AC,序数词的正确描述No.1,故选B。1 -6 beafdc【详解】1.20-15=15, b为15,符合题意,故连b。2.10+10=20, 6为2
7、0,符合题意,故连6。3.3+13=16, a为16,符合题意,故连a。4.9+9=18, f为18,符合题意,故连f。5.5+6=11, d为11,符合题意,故连d。15+2=17, c为17,符合题意,故连c。故答案为1-6 beafdCo四、1-5 cdaeb【解析】略五、1. first【详解】句意:语文是第一节课。one表示数量,first第一,表示顺序,故答案为st。2. January first【详解】句意:我的生日在。根据所给的图片,可知是一月一号,Januaryfirst, 故答案为 January; firsto3. twelfth【详解】句意:这是梅的12岁生日,你能在
8、蛋糕上看到12根蜡烛。根据后面的蜡烛 数量可知梅是12岁,第几个生日用序数词。twelve对应的序数词为twelfth。故答案为 twelfth o4. seven second【详解】句意:一周有七天,并且周一是一周的第二天。基数词表示数量,序数词表 示顺序。故答案为seven; second。hird【详解】考查基数词变序数词,three变为third第三,故答案为third。6. ninth【详解】考查基数词变序数词,nine变为ninth第九,故答案为ninth。7. eighth【详解】考查基数词变为序数词,eight变eighth第八,故答案为eighth。8. Room 103【
9、详解】考查名词短语,room房间,故答案为Room103。9. seventy-eight yuan【详解】考查名词短语,故答案为seventy-eight yuan。10. Class Three,Grade Five【详解】考查专有名词,先说班级,再说年级,故答案为Class Three, Grade Five011. twenty-five to ten/nine thirty-five【详解】考查时间的表达方式,两种表达方式,先说几点钟,再说分钟,或者超过了 三十分钟,差多少分钟到下一点钟,故答案为twenty-five to ten/nine thirty-five六、1. ten
10、to six 2. What time 3. What time does, go、完成下表。数词基数词序数词序数词缩写123456789101112131420完成下表。数词基数词序数词序数词缩写1(one)(first)(1st)2(two)(second)(2nd)3(three)(third)(3rd)4(four)(fourth)(4th)5(five)(fifth)(5th)6(six)(sixth )(6th)7(seven)(seventh)(7th)8(eight)(eighth)(8th)9(nine)(ninth )(9th)10(ten)(tenth )(10th)11
11、(eleven)(eleventh)(11th)12(twelve)(twelfth)(12th)13(thirteen)(thirteenth)(13th)14(fourteen)(fourteenth)(14th)20(twenty)(twentieth)(20th)and twenty-one.2, 510=two thousand five hundred and ten;84, 296=eightyfour thousand two hundred and ninety-six;274, 350=two hundred and seventy-four thousand three
12、hundred and fiftyo2.【巧学妙记】巧记100以内的基数词基数词不难记,找清规律很容易;十二以内词各异,十三数到十九去,后加teen莫忘记;二十、三十至九十,整数之后有一ty;要说“几十几”,中间“”别丢弃;a hundred是“一百”,请你记住莫大意。二.序数词1 .基数词变序数词口诀:基变序,有规律,词尾要加th, 一二三特殊记,词尾分别tdd (first second third ) 八去t,九去e, ve要用f替,ty变作tie,再加th莫忘记.若遇几十几,只变个位就可以.(1)英语序数词的第一至第三需特殊记忆。如:first (1st) , second(2nd),
13、 third(3rd)(2)序数词中第四至第十九都是在基数词后加th,但要注意第5、8、9、12的拼法。fifth eighth、ninth twelfth.(3)序数词中第20至第90的十的倍数是将基数词词尾的y改为i,再加-eth。twenty-twentieth (第二十)eighty-eightieth (第十)(4)十以上的基数词变成序数词时,把个位数变成序数词即可,十位数不变。thirty-twothirty-second (第三十二)seventy-five seventy-fifth (第七十五)(5)序数词的缩写形式,在阿拉伯数字后加上序数词的最后两个字母构成。如:fifth
14、 5thsecond 2nd三.数词的应用.1.表编号.结构:名词(首字母要大写)+基数词=the +序数词+名词Lesson One = the first lesson第一课。注:有些编号,一般仅用第一种表达法。Room 101101 号房间2 .序数词前一般加定冠词the,但序数词前与不定冠词a/an连用时,表示“又一,再Mr Brown has a second car.布朗先生另外还有一辆车。He has tried a second time.他又尝试了一次。【例题】Youve done it three times. Why not try fourth time ?A. a B
15、. an C, the D. /3 .基数词的复数形式表示年代和年龄1)表示年代:in the +年份的复数“在几世纪几十年代in the 1870s在十九世纪七十年代;in the 1970s在20世纪70年代2)表年龄:in ones +整十的复数”表示在某人几十岁时”in his thirties,在他三十岁时4 . hundred / thousand /million /billion(1) . hundred / thousand /million /billion 前有基数词时,其后不加 s,也不加 of;若没有时,既加S,也要带of.three hundred seats 三百
16、个座位hundreds of数以百计的,成百上千的thousands of数以千计的,成千上万的millions of数百万的billions of数十亿的【例题】Every yearvisitors come to China.There are two students in our school.A. thousand B. thousands C. thousands of D. thousand of5 .几个半的表达法:基数词+ and + a half +名词复数=基数词+名词(单数/复数)+and +a halftwo and a half hours = two hours
17、and a half6 .时刻表达法:整点:基数词+ oclock 如:two oclock “2点钟”(2)几点几分:A) .直接读法:先读小时,后读分钟。如:3:25 three twenty-fiveB) .间接读法:a) 30分钟:分钟+ past +小时如: 3:25 -twenty-five past threeb)30分钟:(60分钟)+ to + (小时数+1)如:3:55 一 five to fourc) 30 分钟=half 15 分钟=a quarter 45 分钟=three quarters如:3:30 half past three3:15-a quarter pa
18、st three3:45 -a quarter to four日常生活中的时间读法常常简化,直接按基数词的顺序读。如: 7:05-seven o five;7:15- seven fifteen7 .日期表达法:结构:1) .月曰,年(日用序数词,年用基数词)【注】年份的读法:先读前两位数,再读后两位数,读日时要加the.如:2007 年 3 月 21 日.March the twenty-first, two thousand and seven. ( March 21th, 2007)1900一nineteen hundred2008一two thousand eight1999-nine
19、teen ninety-nine; 1905-nineteen o five;2) .日月年 (the +序数词+of +月,年)如:2007 年 3 月 21 日一-the twenty-first of March, two thousand and seven.习惯写作:March 21th, 20071998 年 6 月 8 日一the eighth of June,nineteen ninety-eight或 June the eighth, nineteen ninety-eighto 写作:June 8, 1998;2003 年 3 月 17 日,星期一 Monday, Marc
20、h the 17th, 2003.8 .分数词的表达法:1) .结构:a) .分子用基数词,分母用序数词.b) .当分子大于 1 时,分母加复数。如:3/4 three fourths (three-fourths)2) .注意:a) .分数词的几种特殊形式.1/3one third = a third1/4one fourth = a quarter1/2one second = a half3/4three fourths = three quartersb) .分数词作主语时,谓语动词根据分数词后面的名词来确定.Two fifths of the milk(be ) drunk by T
21、om.One third of the students(be )girls.5%: five percent,9.表示百分数0. 8% zero point eight percent.分数、百分数与主谓一致分数、百分数的考查往往和主谓一致相联系。当分数、百分数修饰可数名词的复数 时,谓语动词用复数形式;当分数、百分数修饰不可数名词时,谓语动词用单数形式。如: Eighty percent of the students in our school come from Henan.我们学校百分之八十的学生来自河南。Three fourths of the students in my cla
22、ss are interested in English.我们班四分之三的学生对英语感兴趣。Two thirds of the water on the earth is sea water.地球上三分之二的水是海水。10.基数词常和一些计量类名词“单数”用“一”连在一起,构成复合形容词,修饰名词。如: A twelve-year-old boy一个十二岁的男孩a five-mile race 一次五英里的赛跑11、表示有小数的词用基数词。5. 5- five point five12. 135 - twelve point one three fivePractice一.判断对错1 .判断对
23、话与图片是(T)否(F)一致:)How much are the kites?They are fifteen yuan.2 .判断对话与图片是(T)否(F)一致:)一How much is the pear?一Its is two yuan.选择题)1 . There are people in my family.A. 8thB. eightC. third)2. April 5th is his birthday.A. thirdB. threeC. nine()3. August is the month of the year.A. sevenB. ninthC. eighth()4
24、. Five and six is.A. elevenB. tenC. ten one()5. The ticket is$10 and half price on Wednesday.So ifs onWednesday.A. $15B. $8C. $5()6. 一Pm 15 years old.How old are you?()一Im older than you.rm years old.A. 16 B. 15C. 14()7. Mikes sister is.()A. four year old B. fourth years oldC. four years old D. four-years-old()8. We can take the bus to the museum.A.C. 1st No. D. 1 No.三.连线题2.ten+ten3.three+thirteen4.nine+nine5.five+six6.fifteen+two四.找到与下列时间相对应的英文表达,并把它们用直线连接起来。1.4:00a. a half past one2. 12:15b. nine thirty3. 1:30c .four oclock