八年级英语数词练习题50题答案解析版

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八年级英语数词练习题50题答案解析版
1.There are ______ days in a week.
A.five
B.six
C.seven
D.eight
答案解析:C。

一周有七天,所以选seven。

选项 A five 是五天,不符合实际情况。

选项B six 是六天,也不对。

选项D eight 是八天,更不符合一周的天数。

2.There are ______ months in a year.
A.ten
B.eleven
C.twelve
D.thirteen
答案解析:C。

一年有十二个月,选twelve。

选项A ten 是十个月,错误。

选项B eleven 是十一个月,错误。

选项D thirteen 是十三个月,错误。

3.My sister is ______ years old.
A.five
B.six
C.seven
D.eight
答案解析:此题需根据实际情况作答,假设姐姐七岁,选C seven。

选项 A five 五岁,选项B six 六岁,选项D eight 八岁,都可能不是实际年龄,具有迷惑性。

4.There are ______ people in my family.
A.three
B.four
C.five
D.six
答案解析:此题可根据自己家庭实际人数作答,假设家里有四口人,选B four。

选项 A three 是三个人,选项C five 是五个人,选项D six 是六个人,不一定符合实际家庭人数。

5.I have ______ books.
A.two
B.three
C.four
D.five
答案解析:此题可根据自己实际拥有的书的数量作答,假设拥有三本书,选B three。

选项A two 是两本书,选项C four 是四本书,选项D five 是五本书,不一定符合实际情况。

6.There are ______ seasons in a year.
A.two
B.three
C.four
D.five
答案解析:C。

一年有四个季节,选four。

选项A two 是两个季节,错误。

选项B three 是三个季节,错误。

选项D five 是五个季节,错误。

7.There are ______ students in our class.
A.thirty
B.forty
C.fifty
D.sixty
答案解析:此题可根据实际班级人数作答,假设班级有四十人,选B forty。

选项 A thirty 是三十人,选项C fifty 是五十人,选项D sixty 是六十人,不一定符合实际班级人数。

8.I have ______ pens.
A.one
B.two
C.three
D.four
答案解析:此题可根据自己实际拥有的笔的数量作答,假设拥有两支笔,选B two。

选项 A one 是一支笔,选项C three 是三支笔,选项D four 是四支笔,不一定符合实际情况。

9.There are ______ days in February in a leap year.
A.twenty-eight
B.twenty-nine
C.thirty
D.thirty-one
答案解析:B。

闰年的二月有二十九天,选twenty-nine。

选项 A twenty-eight 是平年二月的天数。

选项C thirty 是小月的天数。

选项
D thirty-one 是大月的天数。

10.There are ______ minutes in an hour.
A.thirty
B.forty
C.fifty
D.sixty
答案解析:D。

一小时有六十分钟,选sixty。

选项A thirty 是半小时的分钟数。

选项B forty 不是一小时的分钟数。

选项C fifty 也不是一小时的分钟数。

11.My birthday is on May _____.
A.twenty
B.twentieth
C.twenty-one
D.twenty-first
答案解析:B。

May twentieth 表示五月二十日,用序数词。

A 选项twenty 是基数词;C 选项twenty-one 是基数词;D 选项twenty-
first 表示二十一,不符合题意。

12.The building has _____ floors. I live on the fifth one.
A.five
B.fifth
C.fifteen
D.fifteenth
答案解析:C。

后面提到住在第五层,说明楼有很多层,fifteen 表示十五层符合逻辑。

A 选项five 是五层,一般不会这么低的楼;B 选项fifth 是序数词第五;D 选项fifteenth 是第十五层,通常不会这么高。

13.He was born on March _____.
A.eighth
B.eight
C.eighteen
D.eighteenth
答案解析:D。

March eighteenth 表示三月十八日,用序数词。

A 选项eighth 是八日,一般不是这个日期;B 选项eight 是基数词;
C 选项eighteen 是基数词十八。

14.There are _____ days in February this year.
A.twenty-eight
B.twenty-eighth
C.twenty-nine
D.twenty-ninth
答案解析:A。

如果不是闰年,二月有二十八天。

B 选项twenty-eighth 是二十八日,不符合题意;C 选项twenty-nine 是二十九天,要闰年才有;D 选项twenty-ninth 是二十九日,也不符合一般情况。

15.She is the _____ student to come to school today.
A.third
B.three
C.thirteen
D.thirteenth
答案解析:A。

the third student 表示第三个学生,用序数词。

B 选项three 是基数词三;C 选项thirteen 是基数词十三;D 选项thirteenth 是第十三,不符合题意。

16.Our classroom is on the _____ floor.
A.two
B.second
C.twice
D.twentieth
答案解析:B。

on the second floor 表示在二楼,用序数词。

A 选项two 是基数词二;C 选项twice 表示两次;D 选项twentieth 是第二十,不符合一般教室楼层情况。

17.The meeting will be held on July _____.
A.tenth
B.ten
C.thirty
D.thirtieth
答案解析:A。

July tenth 表示七月十日,用序数词。

B 选项ten 是基数词十;C 选项thirty 是基数词三十;D 选项thirtieth 是第三十,不符合一般日期情况。

18.There are _____ months in a year. December is the _____ month.
A.twelve; twelfth
B.twelfth; twelve
C.twenty; twentieth
D.twentieth; twenty
答案解析:A。

一年有十二个月,December is the twelfth month. 十二月是第十二个月。

B 选项顺序错误;C 和D 选项的基数词和序数词不对应一年的月份情况。

19.He got the _____ place in the competition.
A.three
B.third
C.thirteen
D.thirteenth
答案解析:B。

the third place 表示第三名,用序数词。

A 选项three 是基数词三;C 选项thirteen 是基数词十三;D 选项thirteenth 是第十三,不符合题意。

20.She is going to celebrate her _____ birthday next week.
A.nineteen
B.nineteenth
C.ninety
D.ninetieth
答案解析:B。

her nineteenth birthday 表示她的十九岁生日,用序数词。

A 选项nineteen 是基数词十九;C 选项ninety 是基数词九十;D 选项ninetieth 是第九十,不符合题意。

21.Two thirds of the students in our class are boys. What fraction of the students are girls?
A.One third
B.Two thirds
C.Three fourths
D.Three fifths
答案解析:A。

我们班三分之二的学生是男生,那么女生就是三分之一。

22.The passing score of this test is three fourths. If there are 40 questions in total, how many questions should you answer correctly at least?
A.20
B.30
C.35
D.40
答案解析:B。

及格分是四分之三,总共40 道题,40 的四分之三是30,所以至少要答对30 道题。

23.In a box, there are red balls and blue balls. The ratio of red balls to blue balls is two fifths. What fraction of the balls are red?
A.Two fifths
B.Three fifths
C.Five sevenths
D.Seven ninths
答案解析:A。

红球与蓝球的比例是五分之二,那么红球占五分之二。

24.The recipe calls for one half cup of sugar. How many quarter cups of sugar make one half cup?
A.One
B.Two
C.Three
D.Four
答案解析:B。

二分之一杯糖等于两个四分之一杯糖。

25.The class has 30 students. One third of them are absent today. How many students are present?
A.10
B.20
C.25
D.30
答案解析:B。

30 的三分之一是10,所以缺席10 人,出席的就是20 人。

26.The test score is out of 100. Tom got three fifths of the total score. How many points did he get?
A.40
B.60
C.80
D.100
答案解析:B。

100 的五分之三是60。

27.The ratio of boys to girls in a class is three to two. What fraction of the class are boys?
A.Three fifths
B.Two fifths
C.Three fourths
D.Four fifths
答案解析:A。

男生与女生的比例是三比二,那么男生占五分之三。

28.The cake is divided into eight pieces. Tom ate three eighths of the cake. How many pieces did he eat?
A.Three
B.Four
C.Five
D.Six
答案解析:A。

蛋糕分成八块,吃了八分之三就是三块。

29.The book has 200 pages. Lily has read three tenths of it. How many pages has she read?
A.20
B.60
C.140
D.180
答案解析:B。

200 的十分之三是60。

30.The team won two thirds of their games. If they played 30 games in total, how many games did they win?
A.10
B.20
C.25
D.30
答案解析:B。

30 的三分之二是20。

31.There is a book which is 3.5 yuan. How do you say “3.5” in English?
A.three point five
B.three and five
C.third point five
D.three fifty
答案解析:A。

“3.5”用英语表达是“three point five”。

B 选项“three and five”是“3 和5”的意思;C 选项表达错误;D 选项“three fifty”容易被误认为是“3 点50”或者“350”,都不符合“3.5”的表达。

32.The length of the ruler is 5.6 centimeters. What's the English expression for “5.6”?
A.five point six
B.five and six
C.fifth point six
D.five sixty
答案解析:A。

“5.6”的英语表达是“five point six”。

B 选项“five and six”是“5 和6”的意思;C 选项表达错误;D 选项“five sixty”不是小数的正确表达。

33.The weight of the apple is 2.3 kilograms. Which one is the correct way to express “2.3”?
A.two point three
B.two and three
C.second point three
D.two thirty
答案解析:A。

“2.3”的正确表达是“two point three”。

B 选项“two and three”是“2 和3”的意思;C 选项表达错误;D 选项“two thirty”容易被理解为“2 点30”或者“230”,不是小数的正确表达。

34.The height of the building is 7.8 meters. How to say “7.8” in
English?
A.seven point eight
B.seven and eight
C.seventh point eight
D.seven eighty
答案解析:A。

“7.8”用英语表达是“seven point eight”。

B 选项“seven and eight”是“7 和8”的意思;C 选项表达错误;D 选项“seven eighty”不是小数的正确表达。

35.The temperature is 12.5 degrees Celsius. What's the English for “12.5”?
A.twelve point five
B.twelve and five
C.twelfth point five
D.twelve fifty
答案解析:A。

“12.5”的英语表达是“twelve point five”。

B 选项“twelve and five”是“12 和5”的意思;C 选项表达错误;D 选项“twelve fifty”不是小数的正确表达。

36.The speed of the car is 45.6 kilometers per hour. How do you express “45.6” in English?
A.forty-five point six
B.forty-five and six
C.forty-fifth point six
D.forty-five sixty
答案解析:A。

“45.6”的正确表达是“forty-five point six”。

B 选项“forty-five and six”是“45 和6”的意思;C 选项表达错误;D 选项“forty-five sixty”不是小数的正确表达。

37.The price of the pen is 1.2 yuan. Which is the correct English expression for “1.2”?
A.one point two
B.one and two
C.first point two
D.one twenty
答案解析:A。

“1.2”用英语表达是“one point two”。

B 选项“one and two”是“1 和2”的意思;C 选项表达错误;D 选项“one twenty”容易被误认为是“1 点20”或者“120”,都不是小数的正确表达。

38.The volume of the box is 3.4 cubic meters. What's the English for “3.4”?
A.three point four
B.three and four
C.third point four
D.three forty
答案解析:A。

“3.4”的英语表达是“three point four”。

B 选项“three and four”是“3 和4”的意思;C 选项表达错误;D 选项“three forty”不是小数的正确表达。

39.The time is 2.5 hours. How to say “2.5” in English?
A.two point five
B.two and five
C.second point five
D.two fifty
答案解析:A。

“2.5”的正确表达是“two point five”。

B 选项“two and five”是“2 和5”的
41.There are about two ______ students in our school.
A.thousand
B.thousands
C.thousand of
D.thousands of
答案解析:A。

“thousand”前面有具体数字时,用单数形式,后面不加“of”;“thousands of”表示“成千上万的”,前面不能有具体数字。

42.My father is in his ______.
A.forty
B.forties
C.fortieth
D.the fortieth
答案解析:B。

“in one's + 整十的复数形式”表示“在某人几十多岁的时候”。

43.Three fourths of the work ______ done.
A.is
B.are
C.be
D.been
答案解析:A。

“Three fourths”表示“四分之三”,当分数或百分数修饰的名词是不可数名词或单数名词时,谓语动词用单数形式;work 是不可数名词。

44.The number of the students in our class is ______.
A.forty-five
B.forty and five
C.forty five
D.forty-fifth
答案解析:A。

表示数字“四十五”用“forty-five”。

45.______ of the students in our class are girls.
A.Two third
B.Two thirds
C.Second three
D.Second thirds
答案解析:B。

“三分之二”用“two thirds”表示。

46.My birthday is on May ______.
A.the twenty-three
B.twenty-third
C.twenty three
D.the twenty-third
答案解析:B。

表示“五月二十三日”用“May twenty-third”,日期用序数词表示,前面不加“the”。

47.There are ______ people in the hall.
A.hundred
B.hundreds
C.hundred of
D.hundreds of
答案解析:D。

“hundreds of”表示“成百上千的”,前面不能有具体数字;“hundred”前面有具体数字时,用单数形式,后面不加“of”。

48.He is the ______ one to come to school.
A.three
B.third
C.thirty
D.thirtieth
答案解析:B。

表示“第三个”用序数词“third”。

49.The price of this book is 15.5 yuan. Here “15.5” is read as ______.
A.fifteen and five tenths
B.fifteen point five
C.fifteen five
D.fifteen point fifty
答案解析:B。

小数“15.5”读作“fifteen point five”。

50.There are ______ days in a leap year.
A.three hundred and sixty-six
B.three hundreds and sixty-six
C.three hundred sixty-six
D.three hundreds sixty-six
答案解析:A。

“三百六十六”用“three hundred and sixty-six”表示,“hundred”前面有具体数字时,用单数形式,百位和十位之间要用“and”连接。

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