基數(shù)詞和序數(shù)詞

1、基數(shù)詞基數(shù)詞 Write down the numbers in English and read them aloud. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 30 40 50 60 70 80 90 100zeroonetwothreefourfivesixseveneightnineteneleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentytwenty-onethirtyfortyfiftysixtyseventyeigh

2、tyninetyhundred 101 110 122 143 1,000 1,000,000 1,000,000,000one hundred and oneone hundred and ten one hundred and twenty-twoone hundred and forty-threeone thousand（千）（千）one million(百萬）百萬）one billion(十億）十億）1, 000, 000, 000billionmillion thousand1231,23412,345123,3451,234,567one hundred and twenty-t

3、hreeone thousand, two hundred and thirty-fourtwelve thousand, three hundred and forty-fiveone hundred and twenty-three thousand, three hundred and forty-fiveone million two hundred and thirty-four thousand five hundred and sixty-sevencomma 逗號逗號英語中四位數(shù)和四位數(shù)以上數(shù)字的讀法：英語中四位數(shù)和四位數(shù)以上數(shù)字的讀法：從數(shù)字的右端向左端數(shù)起，每三位數(shù)加一個從

4、數(shù)字的右端向左端數(shù)起，每三位數(shù)加一個逗號逗號“ , ”。從右開始，第一個。從右開始，第一個“ , ”前的數(shù)字前的數(shù)字后添加后添加 thousand，第二個，第二個 “ , ” 前面的數(shù)字前面的數(shù)字后添加后添加 million，第三個，第三個“ , ”前的數(shù)字后添加前的數(shù)字后添加 billion。然后一節(jié)一節(jié)分別表示，兩個逗號之。然后一節(jié)一節(jié)分別表示，兩個逗號之間最大的數(shù)為百位數(shù)形式。間最大的數(shù)為百位數(shù)形式。 7,000 28,000 135,000 7,000,000 4,500,000 79,000,000 350,000,000 21,000,000,000Lets practise!se

5、ven thousandtwenty-eight thousandone hundred and thirty-five thousandseven millionfour million and five hundred thousandseventy-nine million three hundred and fifty milliontwenty-one billion2,648 16,250,0645,237,166,234two thousand, six hundred and forty-eightsixteen million, two hundred and fifty t

6、housand and sixty-fourfive billion, two hundred and thirty-seven million, one hundred and sixty-six thousand, two hundred and thirty-four8,742 2,463,128 1,370,000,0002,000,030,000Listen and repeat the numbers.eight thousand, seven hundred and forty-twotwo million, four hundred and sixty-three thousa

7、nd, one hundred and twenty-eightone billion, three hundred and seventy milliontwo billion and thirty thousandP73序數(shù)詞序數(shù)詞 first 1st second 2nd third 3rd fourth 4th fifth 5th sixth 6th seventh 7th eighth 8th ninth 9thtwelfth 12thtwentieth 20ththirtieth 30thfortieth 40thfiftieth 50thsixtieth 60thseventie

8、th 70theightieth 80thninetieth 90th1. 序數(shù)詞一般由基數(shù)詞后加序數(shù)詞一般由基數(shù)詞后加th構(gòu)成，前面構(gòu)成，前面一般加定冠詞一般加定冠詞the。第第18第第2002. 以以y結(jié)尾的基數(shù)詞構(gòu)成序數(shù)詞時，先把結(jié)尾的基數(shù)詞構(gòu)成序數(shù)詞時，先把y改成改成i，再加，再加eth。第第50 第第203. 不規(guī)則的序數(shù)詞有以下幾個不規(guī)則的序數(shù)詞有以下幾個first, second, third, fifth, eighth, ninth,twelfth（一定要記?。ㄒ欢ㄒ涀。﹖he eighteenththe two hundredththe fiftieththe twen

9、tieth4. 表示第幾十幾時，十位用基數(shù)詞，表示第幾十幾時，十位用基數(shù)詞，個位用序數(shù)詞，十位和各位用連字符個位用序數(shù)詞，十位和各位用連字符-連接連接第三十一第三十一第六十五第六十五 第七十四第七十四 第九十九第九十九第八十二第八十二thirty-firstsixty-fifthseventy-fourthninety-nintheighty-second1、This is Mr Whites _ visit in Beijing. He has been there twice before.A. two B. second C. three D. third2、There are _ mo

10、nths in a year. October is the _ month.A. twelve, ten B. twelfth , tenthC. twelve, tenth D. twelfth, ten3、There are _ people in Peters family. They live on the _ floor in tall building.A. six, eighteen B. six, eighteenthC. sixth, eighteenth D. sixth, eighteen4、 _ is the easiest of all.A. Lesson one

11、B. The Lesson oneC. Lesson First D. The first lesson5、 The foreign guests stayed in _ last night.A. Room 608 B. the Room 608C. the 608 room D. 608 the room 分?jǐn)?shù)，小數(shù)，分?jǐn)?shù)，小數(shù)， 百分比百分比分?jǐn)?shù)、百分?jǐn)?shù)、小數(shù)的表達(dá)方法分?jǐn)?shù)、百分?jǐn)?shù)、小數(shù)的表達(dá)方法 （以分?jǐn)?shù)（以分?jǐn)?shù)考法較為常見）考法較為常見）1. 分?jǐn)?shù)分?jǐn)?shù): 分子用基數(shù)詞，分母用序數(shù)詞，分子分子用基數(shù)詞，分母用序數(shù)詞，分子大于一，分母加大于一，分母加s1/2 讀作讀作 2/3 讀作讀作1/13 讀作讀作 3/4 讀作讀作2小數(shù)小數(shù),百分?jǐn)?shù)的讀法百分?jǐn)?shù)的讀法:小數(shù)點讀成小數(shù)點讀成point 3.6 讀作讀作百分號百分號% 讀成讀成 percent 50%讀作讀作one second（a half）two thirds 或者或者 two- thirdsone thirteenththree fourths或者或者three - quartersthree point sixfifty percentPractice talking(1) 36.9(2) 15 %(3) 3/5(4) 4/7(5) 3.141(6) 28 %thirty-six point ninefifte