数词佟姗姗.doc

数词 姓名_数词分为基数词和序数词。用于表示事物_的词称为基数词，表示事物_的词称为序数词。一、基数词：A. 1319均以后缀 结尾, 发长音且要重读，几十词尾是短音的_, 且不能重读，这是在听力中区分它们的关键B. 表示“几十几”时，个位和十位之间需加连字符，如twenty-one, thirty-two, forty-three等。C. 数字的写法和读法：十位与个位之间要加连字符“-”；百位和十位之间要加 三位数以上的数，从个位往前数，每三位数加一个逗号，从后往前数的第一个逗号代表_, 第二个逗号代表_,第三个逗号是_，注意这几个词不能用复数形式，后也不能加and。练习：你能正确读出下列数字吗？ 365_247，258_A 三十和十三都以thir为前缀后面加teen和tyB 四变四十要去u，四变十四不用去C 五十和十五要把就结尾的ve变成f练习： 写出下列数字的英文形式并朗诵。数字英文数字英文数字英文11370214803159041610051758618797193658206000930700001040900000011501260D. 基数词的基本用法。1）表示具体、准确的数目时，hundred, thousand, million等数词后不能加-s, 如five hundred, six thousand,等。当hundred, thousand等数词与of连用，表示不具体、不准确的数目时，词尾须加-s。如：thousands of students_ millions of trees_三百_ 成百上千_四千_ 成千上万_五百万_ 数以百万的_2）对事物的编号用基数词，门牌号，班号，页码，电话号码等通常用基数词。 Turn to page twenty-one. _ He lives in Room 801._ 我在班上学。_ No.3 bus_电话号码83545601(用基数词逐个念，0念字母O)。 3) 表示百分数用基数词。 Thirty percent of it is water. 百分之四十四_4) 表示分数时, 分子为基数词, 分母为序数词, 若分子大于1, 分母上的序数词要用复数。 one third _ 三分之二_ two fifths_ 五分之一 _ 二、序数词A. 如何由基数词变成序数词。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.练习： 写出下列数字的基数词和序数词数字基数词序数词数字基数词序数词115216317418519620730840950106011701280139014100B. 序数词的用途用来表示时间例如：2008年2月28日可以表示为February 28th, 2007。用来表示顺序例如：He is always _ _ to come to school. 他总是第一个来学校。用来表示楼层例如：He lives on _ _ floor.他住在四楼。三、数词的应用：1、时刻表达法： “时刻”用基数词表达，同时要注意以下几点。表示“整点”时，在基数词后加oclock. 9:00 oclock.分钟小于或等于30分钟的，用“分钟数past钟点数”形式；分钟数大于30分钟的，用“到下一个钟点所差的分钟数to下一个钟点数”形式, 也可以依次读钟点数和分钟数。如： 7:20 twenty past seven或seven twenty. 7：40 twenty to seven或seven forty.注意两个特殊的表示时间的单位词：30分钟用half，15分钟用a quarter，如：6:30 读作：half past six5:45 读作：a quarter to six6:15 读作：a quarter past six练习： 3:00 _ 3:05 _ _ 3:15 _ _3:30 _ _ 3:45 _ _ 3:55 _ _2、年、月、日日期表达法：月日，年（或日月年） 1988年12月25日 25 th December, 1988 / 25 December, 1988 (英) December 25 th, 1988 / December 25, 1988 (美) 12月25日的读法 December the twenty-fifth December twenty-fifth The twenty-fifth of December3、编号、分数和百分数表达法207房间 _第五课 _ _在九年级一班 _15号 _ 三分之一 _ 五分之三 _ 89% _6.74 _4. 表示倍数(1) 倍数+as +形容词/副词(原级)+ as。如：This bridge is three times as long as that one.这座桥是那座桥的三倍长。(2) 倍数+形容词或副词的比较级+than。如：This bridge is three times longer than that one.这座桥是那座桥的三倍长。(3) 倍数+ the size/length/weight+of+表示比较对象的名词。如：This bridge is three times the length of that one. 这座桥是那座桥的三倍长。5. 表示小数小数点前的数按总数念，同其它基数词读法一样，小数点用point，小数点后面的数按基数词一个一个单独念。如9.65读作nine point six five。218.39读作two hundred and eighteen point three nine。6. 表示年代表示在某个世纪的几十年代，用“in the +逢十的基数词的复数”。基数词的复数若用阿拉伯数字表示，可直接加s，也可加s。如“在20世纪80年代”是in the 1980s或in the 1980s，读作in the nineteen eighties。注意：不要漏掉the7. 表示年龄（1）表示某人几岁的确切年龄，用“基数词years old”或者“at the age of基数词”，也可直接用基数词。如：He began to study English at (the age of) seventy. 他70岁开始学英语。Shes seventy years old. 她70岁了。（2）表示某人几十多岁这样的约略年龄，用“in ones+逢十的基数词的复数(如tens, twenties, thirties等)”来表达。如：He went to America _ _ _. 他30多岁时去了美国。 练习： 在十九世纪三十年代 _ 在她四十多岁的时候 _再两块蛋糕 _8路公车 _一个5岁男孩 _比长五倍 _巩固练习1.Dick, it is the _ time in _ days that youve made the same mistake.A. two, three B. second, three C. two, thirdD. second,2.How many people will come to Beijing next year?Its hard to say, _ people, I think.A. million ofB. millions of 3. The also wrote_of beautiful pieces of music for the orchestra.A. hundredB. six hundredC. a hundredD. hundreds4.the students play QQ farm games on the Internet.A.70 percents of B.70 percent C.70 percent of D.70 percents 5.Wang Ming is in our class .A. the third tallest B. third tallest C. three tallest D. the three tallest 6.About of the students in our class like Jay Chou very much.A. four fifth B. four fifths C. fourth fifth D. fourths fifth7. The Olympic Games are held .A. every four years B. every four year C. every fourth year D. every fouryear.8.It took me to find the key to the drawer.A. one and half hours B. one and a half hours C. one and a half hour D. one and half hour BBDC ABAB1、 基础题1 -How many workers are there in your factory? -There are two _.A. hundreds B. hundred C. hundred of D. hundreds of2 About _ students in our class can describe that place in English.A. three-fifths B. three-fifth C. third-five D. third-fifths3 -Can you write the number eighty-five thousand, six hundred and twenty-six? -Yes, it is _.A. 856620 B. 85626 C. 58662 D. 586264 . When was the PRC founded? It was founded on _. A. July 1, 1921 B. October 1, 1949 C. August 1, 1927 D. May 1, 19225 . _ Chinese are looking for ways to learn English well before Beijing 2008 Olympics.A. Thousand B. Thousands C. Thousand of D. Thousands of6 Mr Zhang teaches at Middle School. A. a No. 5 B.No.5 C. the No.5th D.5th No 7 John lives on floor. A.twenty B. twentieth C. the twentieth D. the twentyth 8 He has worked on the farm for years. A. two and half B. two and a halfC. a half and two D. two halves and a 9 Xiao Mao and Da Mao are in .A. team Fourth B. the team Four C. Team Four D. Four team 10Sorry, _had been sold out.A.42 size B. Size 42 C.the 42 size D. the size 42 2、提高题1It is said that SARS has killed more than _ people worldwide. A. three hundreds B. three hundreds C. three hundreds D. three hundred2-What do you think of a war, Li Ming? -Ive no idea. But its a fact that _ people had to leave their hometown during the War on Iraq.A. three millions B. million of C. millions of D. several millions3 We all think that the _ century will bring us more hopes.A. twenty-first B. twentieth-first C. twenty-one D. twentieth-one4 Both of the two rulers are broken. I want to buy a _one.A. three B. third C. forth D. /5. I heard the sports meeting has been put off until _, hasnt it?A. the 3 and 4 B. the 3th and 4 th C. the 3rd and 4 th D. four and five6. _ of the ear