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小学英语数词(基数/序数/分数/小数)总结及习题

小学英语数词(基数/序数/分数/小数)总结及习题

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小学英语数词总结

一、基数词(表示数量多少)

1. 0~12(特殊记,无规律)

zero, one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve

2. 13~19(teen 结尾)

thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen

记忆:0到12没规律,thirteen、fifteen看仔细,其他十几teen来结尾。

3. 整十数 20~90(ty 结尾)

twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety

记忆:几十末尾都用ty,twenty、thirty是特例,forty、fifty更厉害。

4. 几十几(中间加连字符 - )

21 = twenty-one22 = twenty-two99 = ninety-nine

记忆:表示数字几十几,连词符号别忘记!

5. 百位/千位/百万/十亿(hundred / thousand / million / billion)

100 = one hundred500 = five hundred900 = nine hundred

2,000 = two thousand20,000 = twenty thousand

2,000,000 = two million2,000,000,000 = two billion

⚠ 数字 + hundred/thousand/million/billion 用单数;模糊数量加s:hundreds of(数百)、thousands of(数千)、millions of(数百万)。

6. 超过100:拆数字相加

125 = one hundred and twenty-five

1125 = one thousand one hundred andtwenty-five

口诀:还有一点需注意,几百要用 hundred。

二、序数词(表示顺序第几)

1. 第1~第12(特殊变化)

first(第一) second(第二) third(第三) fifth(第五) eighth(第八) ninth(第九) twelfth(第十二)

口诀:一二三单独记(first/second/third);八去t(eighth),九去e(ninth),ve要用f替(fifth, twelfth)。

2. 第4~第19(基数词 + th)

fourth, sixth, seventh, tenth, eleventh, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth

3. 整十数变序数词:y 变 ie 再加 th

twenty → twentieththirty → thirtiethforty → fortieth

4. 第几十几:只变个位,十位用基数词

第23 = the twenty-third  第120 = the one hundred and twentieth

口诀:整十数y变ie,再加th总没错;超过21序数词,个位数字来变身。

5. 简写方式

1st = first2nd = second3rd = third4th = fourth22nd = twenty-second

⚠ 日期要用序数词:June 5th = June fifth(6月5日)。

三、分数

表达:分子用基数词,分母用序数词

三分之一 = one third  三分之二 = two thirds

五分之四 = four fifths  八分之三 = three eighths

⚠ 分子大于1时,分母序数词要加 s 变复数!

带分数(大于1)

三又四分之一(3¼)= three and a fourth

一又二分之一(1½)= one and a half

用法:分数>1时后面可数名词用复数(two and a half years 两年半);分数作主语时,谓语与后面名词一致(Two thirds of students are here.)。

四、小数

小数点 = point 整数部分合起来读,小数部分分开一位一位读

11.24 = eleven point two four

0.5 = zero point five / point five

用法:小数>1时后面可数名词用复数(1.5 meters 一点五米);<1时用单数(0.9 foot 零点九)。

附:百分数

百分号念percent(永远不加s)

100% = one hundred percent0.4% = zero point four percent

About 80 percent of students in our class like reading.

谓语单复数由 percent 后面的名词决定。

数词专项练习(共24题)

一、基数词

1. 13 → ( )  A. thirteenB. threeteenC. threeteenth

2. 15 → ( )  A. fiveteenB. fifteenC. fiveteenth

3. 40 → ( )  A. fourtyB. fortyC. fourteen

4. 90 → ( )  A. nintyB. ninetyC. nineteth

5. 21 → ( )  A. twenty oneB. twenty-oneC. twentieth-one

6. 99 → ( )  A. nine nineB. ninety-nineC. ninty-ninth

7. There are two ______ students in our school.A. thousandB. thousandsC. thousands of

8. There are ______ of people in the park on Sunday.A. hundredB. hundredsC. a hundred

9. 125 用英语是 ______A. one hundred twenty fiveB. one hundred and twenty-fiveC. one hundred and twenty five

10. 2,000,000 用英语是 ______A. two millionsB. two millionC. two million of

二、序数词

11. 第三 → ( )  A. firstB. secondC. third

12. 第五 → ( )  A. fivethB. fifthC. fivth

13. 第八 → ( )  A. eighthB. eightthC. eighthth

14. 第九 → ( )  A. ninethB. ninthC. nineth

15. 第十二 → ( )  A. twelvethB. twelfthC. twelvth

16. 第二十 → ( )  A. twentythB. twentiethC. twentith

17. 第23道菜 → the ______ dishA. twenty-thirdB. twenty-threethC. twentieth-third

18. My birthday is on June ____.A. fiveB. fifthC. fiveth

三、分数

19. 三分之一 → ( )  A. one thirdB. one thirdsC. first one

20. 三分之二 → ( )  A. two thirdB. two thirdsC. two thirdes

21. 五分之四 → ( )  A. four fifthB. four fifthsC. four fiveth

22. Two thirds of the students in our class ____ boys.A. isB. areC. be

四、小数

23. 11.24 读做 ______A. eleven point two fourB. eleven point twenty-fourC. eleven dot two four

24. The box is 1.5 ______ long.A. meterB. metersC. meteres

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