数词
数词
数词的分类:基数词和序数词 序数词前面通常要加the World war one---the first world war Lesson two---the second lesson Chapter Three---the Third Chapter 在序数词前面用a/an,表示“又一,再 1)I have failed four times, but I will have a fifth try. 2)i want to have a third look at your coat
一、数词的分类：基数词和序数词 序数词前面通常要加the. World War One---the First World War Lesson Two---the Second Lesson Chapter Three---the Third Chapter 在序数词前面用a/an, 表示“又一，再一” 1) I have failed four times,but I will have a fifth try. 2) I want to have a third look at your coat
与数词相关的其它表达法 1小数点读作: point 2倍数: 倍(once)两倍( twice)/三倍( three times)/四倍(four times).. 3百分数读作: percent 4.分数 分子用基数词,分母用序数词。当分子大于一的时侯分母要加s 用复数.如3/5读作 three fifths 1/3读作 one third 佐读作 one half 读作 one fourth/ one quarter 在口语中更多读成 a third/ahaf/ a fourth/ a quarter 注:1/2不能读作 one second,3/4还可以读作 three quarters,22/3 读作 Etwo and two thirds
二、与数词相关的其它表达法： 1.小数点读作：point 2.倍数： 一倍（once）/两倍（twice）/三倍（three times）/四倍（four times）… 3.百分数读作：percent 4. 分数 分子用基数词，分母用序数词。当分子大于一的时侯分母要加s 用复数. 如3/5读作three fifths 1/3读作one third ½读作one half ¼读作one fourth/one quarter 在口语中更多读成a third/a half/a fourth/a quarter 注：1/2不能读作one second,3/4还可以读作three quarters,2 2/3 读作two and two thirds
5数词算式表达 +→→plus →) minus X(multiplied by)/times → divided by 5+7→→ five plus seven 9-3->nine minus three 8×9— eight( multiplied by)/ times nine 64.8sixty-four divided by eight 6: 5-six to five 4的平方→ four squared 5的立方→ five cubed 6的四次方幂→ the fourth power of six 平方米→ square meter 立方米 cubic meter
5.数词算式表达 +→plus －→minus ×→(multiplied by)/times ÷→divided by 5+7→five plus seven 9-3→nine minus three 8×9→eight (multiplied by)/times nine 64÷8→sixty-four divided by eight 6:5→six to five 4的平方→four squared 5的立方→five cubed 6的四次方/幂→the fourth power of six 平方米→square meter 立方米→cubic meter
6度数的读法 1)19℃C读作 nineteen degrees centigrade 2)-12℃C读作 minus twelve degrees centigrade 或者读作 twelve degrees centigrade below freezing 3)0℃读作 zero centigrade 4)0摄氏度以上读作 over zero centigrade
6.度数的读法 1) 19℃读作nineteen degrees centigrade 2) -12℃读作minus twelve degrees centigrade 或者读作twelve degrees centigrade below freezing 3) 0℃读作zero centigrade 4) 0摄氏度以上读作over zero centigrade
7其它 1)倒数第10行 the 1oth line from the bottom/end 2)倒数第三(行) the last but two( lines) 3)倒数第四(自然段) the last but three( paragraphs)
7.其它 1）倒数第10行 the 10th line from the bottom/end 2)倒数第三(行) the last but two( lines) 3)倒数第四(自然段) the last but three( paragraphs)
4The room is 4 meters by nine meters(36 square meters) 5The cage is as big as 4 meters by three meters and by three meters(36 cubic meters)
4)The room is 4 meters by nine meters (36 square meters) 5)The cage is as big as 4 meters by three meters and by three meters (36 cubic meters)
8年月日等表达法(干万不要全写成阿拉伯数字) in1997 in march in the 1990s in the 1gth century in spring /summer/autumn/winter in one's teens---in one's twenties in the morning/afternoon/evening in the day(time)- in the night在夜里) 但是:在 morning/afternoon/ levening前面有形容词修饰时, 只能用on on a cold morning on a hot afternoon on a cool evening
8.年月日等表达法（千万不要全写成阿拉伯数字） in 1997 in March in the 1990s in the 18th century in spring /summer/autumn/winter in one’s teens---in one’s twenties in the morning/afternoon/evening in the day(time)---in the night(在夜里） 但是:在morning/afternoon/evening前面有形容词修饰时, 只能用on on a cold morning on a hot afternoon on a cool evening
on Monday on march 3 on Monday morning/afternoon/evening on the morning/afternoon/evening of march 3 in the early morning of monday in the late afternoon of march 3 at night at3(0’ clock) at noon at midnight at dawn/at daybreak in warm summer davs on cold summer days in cold winter days on warm winter days
on Monday on March 3 on Monday morning/afternoon/evening on the morning/afternoon/evening of March 3 in the early morning of Monday in the late afternoon of March 3 at night at 3(o’clock) at noon at midnight at dawn/at daybreak in warm summer days on cold summer days in cold winter days on warm winter days
9时刻表达法 1)低于30分钟用past,超过30分钟就用to,或者直 接读数,一半就用 half past,-刻用 a quarter 7: 25-twenty-five past seven/seven twenty-five 8: 35-twenty-five to nine/eight thirty-five 9: 30-half past nine/nine thirty 10: 15-a quarter past ten/ten fifteen 9: 45a quarter to ten/nine fourty-five 2)电台,机场,车站等计时只直接读数 10电话号码直接读数
9.时刻表达法 1）低于30分钟用past,超过30分钟就用to, 或者直 接读数,一半就用half past,一刻用a quarter 7:25→twenty-five past seven/seven twenty-five 8:35→twenty-five to nine/eight thirty-five 9:30→half past nine/nine thirty 10:15→a quarter past ten/ten fifteen 9:45→a quarter to ten/nine fourty-five 2)电台，机场，车站等计时只直接读数 10.电话号码直接读数