英语数词用法PPT学习教案

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1、会计学1数词分基数词和序数词两类。一、 数词的分类1. 基数 A从110one，two，three，four，five，six，seven，eight，nine，tenB从 1119eleven，twelve， thirteen， fourteen， fifteen， sixteen， seventeen，eighteen， nineteen第1页/共39页C从 2199特殊:twenty，thirty, forty，fifty，eighty 21 twenty-oneD百位数101 a hundred and one个数基数词后加个数基数词后加hundred，表示几百，表示几百;在几十几与在

2、几十几与百位间加上百位间加上and(200 two hundred101 a/one hundred and one , 320 three hundred and twenty , 648 six hundred and forty-eight )第2页/共39页第3页/共39页F基数词的句法功能可作主语、宾语、定语、表语、同位语。The two happily opened the box（作主语）They three tried to finish the task （作同位语）第4页/共39页三、数词的用法三、数词的用法 hundred, thousand, million, bill

3、ion这几个这几个 数词前如有具体数字，要用单数形式，数词前如有具体数字，要用单数形式， 后面加可数名词复数。后面加可数名词复数。 two hundred students six thound people Dozen 一打一打 dozens of 几十，许多，大量几十，许多，大量 two dozen eggs For dozens of years. score scores 许多，好几十许多，好几十three score of eggsscores of people第5页/共39页 第6页/共39页第7页/共39页3. several, some, many等词被认为是具体数字，等词被

4、认为是具体数字， 其后跟其后跟hundred, thousand, million, billion的的 单数名词复数。单数名词复数。 Several hundred soldiers are coming.4. a number of+名词复数，许多，大量。谓语用复数；名词复数，许多，大量。谓语用复数； A number of students were absent from the meeting. the number of+名词复数，名词复数，.的数目。谓语用单数的数目。谓语用单数。 The number of students absent from the meeting was

5、 increasing.5. 用数词表示事物的编号。用数词表示事物的编号。 名词基数词名词基数词the+ 序数词名词。序数词名词。 Room 8 = the eighth room第8页/共39页6. 用数词表示人的不确切岁数或年代，用数词表示人的不确切岁数或年代， 用几十的复数形式表示。用几十的复数形式表示。 He became a teacher in his thirties. in the 1990s7. 分数是由分数是由基数词基数词和和序数词序数词一起来表示的。一起来表示的。 基数词作分子，序数词作分母，基数词作分子，序数词作分母， 除了分子是除了分子是“”以外，其他情况下序数词都要

6、用复以外，其他情况下序数词都要用复数形式。数形式。 当分数作主语，谓语要根据分数后的名词确定当分数作主语，谓语要根据分数后的名词确定 单复数，如果是可数名词用复数，不可数名词用单数单复数，如果是可数名词用复数，不可数名词用单数。 One third of the students in our class have been to Beijing. Four fifths of the water is drunk by the children.第9页/共39页8. 数词还可以用来表示时间、年月日等。数词还可以用来表示时间、年月日等。 注意：注意：）百分数）百分数 由基数词由基数词perce

7、nt来表示来表示 ninety-five percent 2) 英语中表达英语中表达“几个半几个半”有两种方法：有两种方法： “数词数词+and a half+名词复数名词复数”； “数词数词+名词复数名词复数+and a half”。例如：例如：two and a half hours/ two hours and a half第10页/共39页第11页/共39页2从第二十至第九十九从第二十至第九十九变变y为为i，再加，再加“eth”构成。构成。twentytwentieth thirtythirtieth表示第几十几时，用几十的基数词表示第几十几时，用几十的基数词+连字符连字符“”+个位序

8、数词个位序数词。thirty-first 第三十一第三十一 fifty-sixth 第五十六第五十六seventy-third 第七十三第七十三 ninety-ninth 第九十第九十九九第12页/共39页3序数词的缩写形式:阿拉伯数字后加上th。irstlst second2nd third3rdfourth4th twentieth20thtwenty-third23rd4序数词的句法功能序数词在句中可作主语、宾语、定语和表语。The second is what I really need（作主语）He choose the second（作宾语）We are to carry out

9、the first plan（作定语）She is the second in our class（作表语）第13页/共39页注：通常前面要加定冠词 the；但出现不定冠词a或an时，则表示“再”，“又”。Well go over it a second time第14页/共39页序数序数第15页/共39页二、时刻表示法1. 几点钟 5:00 读作 five oclock 2. 几点过几分 five past seven 七点过五分half past six 六点半a quarter past eight 八点过一刻3. 几点差几分 ten to eight 差十分八点a quarter to

10、 twelve 差一刻十二点twenty to six 差二十分六点第16页/共39页another, other, more修饰数词的用法修饰数词的用法1. another A) another+名词单数 B)表“另外的、额外的、附加的时，+具体数字的复数 1Have you finished your report yet？ No，I will finish it in 10 minutes Aanother BOther Cmore Dless 2The strike may last another three days罢工可能还要持续三天。2. other +复数名词，置于数词之后B

11、)但与定冠词the连用时，other要放在数词前。 第17页/共39页 is going camping with _boys next SundayAlittle two other Btwo little other Ctwo other little Dlittle other two BDo you know where he found the other two photos？另外两张照片 3. more 1more1）She has got five more electric fans她还有五台电扇。 第18页/共39页2more还可与many,some等词连用（1）There

12、 are many more dictionaries on the desk课桌上有许多词典。 （2）Would you like some more tea？再喝点茶好吗？ 4. 名词省略 如果前后意思清楚，another或more后面的名词可以省去。如： 1I climbed the stairs slowly，carrying a big suitcase，my father following with two more第19页/共39页get five 第20页/共39页第21页/共39页第22页/共39页第23页/共39页总结 、加减乘除表示法1. “加加”用plus，and或a

13、dd表示 How much is two plus three? It is fiveTwo and three is /equals five2. “减减”用 minusHow much is ten minus six?3. “乘乘”multiply3X4? How much is three times four?4. “除除”用divide的过去分词形式表示164=? How much is sixteen divided by four?第24页/共39页五、分数表示法1. 分数，基数词数词作分子，序数词数词作分母，除了分子是“1”以外，其它情况下序数词数词都要用复数形式。3/4 t

14、hree fourths或 three 1/3 one third或a third 24/25 twenty-four twenty-fifths3 1/4 three and one fourth或 three and one quarter 1/2 a half 1/4 one quarter或a quarter 1 1/2 one and a half 2. 当分数后面接名词时，如果分数表示的值大于当分数后面接名词时，如果分数表示的值大于1，名词用复数；小于，名词用复数；小于1，名词用单数，名词用单数。1 1/2 hours 一个半小时（读作 one and a half hours）第

15、25页/共39页第26页/共39页第27页/共39页第28页/共39页第29页/共39页第30页/共39页第31页/共39页选择填空。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-o

16、ld5We will have a_ walkAten minutes Bten minutes Cten-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes第32页/共39页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 for

17、ties of the eleventh centuryB 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-fourthsAfour meters longBMarch eighthA in the forties of the eleventh centuryC. three-fourths第33页/共39页10. He went down to the village which was _miles away from the city.A. three hundreds B. three hundredC. three hundreds ofB. three hundred第34页/共39页高考题目第35页/共39页AC第36页/共39页CCD第37页/共39页ADA第38页/共39页