英语数词的各种表示方法课件.ppt

1、Numbers,专项复习 数词,数词的考点,二.数词的各种表示法,一、时间的表达方式 1直接表达法。即先读小时，再读分钟 如：4：10 读成 8：36 读成 2逆读法。即先读分钟，再读小时 分钟小于30的用“past”，中文译为“过”。 即分钟+past+时钟，中文译为“几点过几分” 如：5:10（5点过10分）读成 2:02 （2点过2分） 读成,four ten,eight thirty-six,ten past five,two past two,分钟超过30（不包括30分钟）用 “to”（中文译为“差”） 即“60-分钟数 +to+钟点数+1” （中文译为：几点差几分） 如：7：45

2、（八点差15分） 读成 1：58（两点差2分） 读成 3半小时用“half”, 一刻钟用“quarter”。 注意：一刻钟 a quarter 三刻钟 three quarters 如： 4: 30 读成 9: 45 读成,a quarter to ten,two to two,half past four,fifteen to eight,特别注意：一个半小时的表达方式： one / an hour and a half one and a half hours,Can you read them?,1:30 2:15: 3:45 6:38 7:25 9:50,one thirty,half

3、 past one,two fifteen,a quarter / fifteen past two,three forty-five,a quarter/ fifteen to four,six thirty-eight,twenty- two to seven,twenty five past seven,seven twenty-five,ten to ten,nine fifty,三年半的两种表达方式: three years and a half three and a half years,1. Its already 7:40 now. When will the film st

4、art? _. We still have five minutes. A. A quarter to seven B. Seven past forty-five C. A quarter to eight,1 5,分子 基数词 分母 序数词,one fifth,2 7,分子 1 分母 + s,two sevenths,1 4,分子 a 分母 quarter,a quarter,3 4,three quarters,1 2,a half,1 3,three and one third,3,基数词 + and + 分数,二.数词的表示法 分数百分数,分数、百分数、小数的表达方法 （以分数考法较

5、为常见） 1. 分数: 分子用基数词，分母用序数词，分子大于一，分母加s 1/2 读作 2/3 读作 1/13 读作 3/4 读作 2小数,百分数的读法: 小数点读成point 3.6 读作 百分号% 读成 percent 50%读作,one second（a half）,two thirds 或者 two- thirds,one thirteenth,three fourths或者three - quarters,three point six,fifty percent,80 %,基数词 + percent,eighty percent,half / (百)分数 + of + 可数名词复数

6、 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,1. _ of the students _ boys in Class A. Two three; are B. Two thirds; are C. Two thirds; is 2. _ of her money _ spent on clothes. A. Two three; are B. Two thirds; is C. Two third; is 3. _ the teachers in our school is about one

7、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 = one hour and a half,三.数词的表示法 半的表示法,1. The boy always stays there for _. A. one and half hour

8、B. one and a half hour C. one and a half hours 2. 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 once，两倍 twice， 三倍 three times (三倍或以上 基数词times),四.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

9、., 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 time as tall as B. twice taller than C. three times as taller as 2. 我的箱子比你的重六倍! My box is _ yours.,six times heavier than,seven times as heavy as, The winner is _. He is an _ b

10、oy . A. eight-year-old; eight years old B. eight years old; eight-year-old C. eight-years old; eight-year-old He came to China _. A. at the age of 20 B. when he is 20 C. at age of 20,五.数词的表示法 年龄, The river is about _. A. 6,000 meters long B. 6,000-meters-long C. 6,000-meter-long,五.数词的表示法 计量,be + 数词

11、+ 量词 + 形容词,10. He went down to the village which was _miles away from the city.A. three hundreds B. three hundredC. three hundreds of,B. three hundred,6The wall is_.Afour meters long Bfour meter long Cfour-meter long 7Whats the date today? Its_AMarch the eight BMarch eighthCeight，March8It happened i

12、n the 1040sA in the forties of the eleventh centuryB in the forties of the tenth centuryC in the forty 9About_ 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,选择填空。1M

13、arch 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_ walkAten minutes Bten minutes Cten-minutes,B the t

14、hird,Ceight o five,Asixteen,Beight-year-old,Bten minutes,六、加减乘除表示法1. “加”用plus，and或add表示 How much is two plus three? It is fiveTwo and three is equal to five2. “减”用 minus How much is ten minus six?3. “乘”multiply 3X4? How much is three times four?4. “除”用divide的过去分词形式表示164=? How much is sixteen divided

15、 by four?,2more还可与a little，a few，a lot，several等词连用 （1）There 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,1Tony is going camping with _boys next Sunday Alittle two other Btwo little other Ctwo other little Dlittle other two 3Do you know where he found the other two photos？另外两张照片 3. more 1more 1）She has got five more electric fans她还有五台电扇。,七、another, other, more修饰数词的用法 1. ano