英语数词专项练习

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数词专项练习(附答案解析)

数词专项练习（附答案解析）一、选择题。

1.Nowadays ______of business letters are written in English.A. two thirdB. two thirdsC. two threeD. second three本题考查的知识点是分数的表达。

句意：现如今，有三分之二的商务信函都是用英语写的。

分子用基数词，而且是2，大于1，所以分母用复数，而且用序数词，因此选B.分数表达法为：分子用基数词，分母用序数词；分子在前，分母在后；若分子大于1时，分母用复数。

2.---Good news! Bill won _____ medal in the long jump just now. ---Really? That’s his ____ one at our sports meeting.A. a; fourB. an; fourthC. a; fourth本题考查的知识点是不定冠词以及序数词的用法。

句意：好消息！比尔在刚才的跳远比赛中赢得了一枚奖牌。

——真的吗？那是他在我们的运动会上赢得的第四枚了。

因为Bill赢了一枚奖牌，是泛指，用不定冠词，而且medal的第一个音节是辅音，所以用a, 而后面指第四枚，应该用序数词，因此答案为C。

名词第一次出现时用a或an, 表泛指。

“第四枚”应该用序数词fourth.3.---Peter, how old is your father this year?---_____. And we just had a party for his_____ birthday last week.A. Fortieth; fortyB. Forty; fortyC. Forty; fortiethD. Fortieth; fortieth本题考查的知识点是基数词与序数词的综合运用。

句意：——彼得，你父亲今年多大？——40岁。

上周末我们刚为他举行了40岁的生日聚会。

英语数词题20套(带答案)

英语数词题20套(带答案)一、初中英语数词1．— It's excited to hear that Jessie J got the King of Singer in the end.— Yes, it's her _____ time to get the first prize.A. sixB. sixthC. the sixD. the sixth【答案】 B【解析】【分析】句意：——很高兴听到杰西J最终获得了歌手之王。

——是的，这是她第六次获得一等奖。

根据句意可知此句需要序数词，因前面有物主代词her，定冠词the要省略，故选B。

【点评】考查序数词的基本用法。

2．The number of the students in our school is about four __________._______ of them are girls.A. thousand; Two thirdsB. thousands; Two thirdC. thousands; Two thirdsD. thousand; Two third【答案】 A【解析】【分析】句意：我们学校的学生人数大约是四人。

三分之二是女孩。

four基数词后用thousand的原形，分数表达形式是分子是基数词，分母是序数词，分子大于一，分母用复数形式，故三分之二是two thirds，故选A。

【点评】考查数词，注意分数的用法。

3．The TV was invented around .A. the twenty centuryB. the twentieth centuryC. twentieth centuryD. twenty century 【答案】 B【解析】【分析】句意电视大约是在二十世纪发明的。

二十世纪也就是第二十个世纪，因此使用序数词，序数词前必须使用定冠词the，故答案是B。

【点评】考查数词，注意序数词再具体语境中的运用。

【英语】数词专项练习经典

【英语】数词专项练习经典一、初中英语数词1．The headmaster's office is on the floor.A. oneB. twoC. thirdD. three【答案】 C【解析】【分析】句意：校长的办公室在三楼。

one一个，two两个，third第三，three三个。

根据句意可知，此处需要填入的意义为第三层，故应该用序数词，故选C。

【点评】考查了序数词与基数词辨析，注意两者意义的区分。

2．Please turn to Page ______________ and take a look at the picture on it.A. the eightiethB. EightiethC. EightiesD. Eighty【答案】 D【解析】【分析】句意：请翻到第80页，看看上面的图片。

当表示“第…….页（房间、组等）”时，常用“名词+基数词”，Page80表示“第80页”。

故选D。

【点评】考查基数词的基本用法。

注意Page80=the 80th page，都表示第80页。

3．We gave away ________ books to the school library last year.A. six thousandsB. six thousandC. six thousands ofD. six thousand of【答案】 B【解析】【分析】句意：去年我们向学校图书馆赠送了六千本书。

数词后thousand用单数，thousands of，固定搭配，几千个，不与数字搭配；因此是six thousand或者thousands of，只有B对，故选B。

【点评】考查数词，注意识记thousand的用法。

4．Our country is 70 years old this year. We will celebrate her _____ birthday on Oct. 1. A. the seventieth B. seventieth C. the seventy D. seventy【答案】 B【解析】【分析】句意：今年我们的国家70岁了，我们将在10月1日庆祝她的70岁生日。

英语数词专项训练100(附答案)及解析

英语数词专项训练100(附答案)及解析一、初中英语数词1．There were about six___________ students in the school building during the earthquake.A. hundredB. hundredsC. hundreds ofD. hundred of【答案】 A【解析】【分析】句意：地震期间，校舍里大约有六百名学生。

hundred，百，基数词，表示具体的数量，其前要用基数词；hundreds of +可数名词复数，表示不确定的数量，固定短语。

空格前有基数词six，要用hundred，故答案选A。

【点评】考查基数词hundred的用法。

注意hundreds不能单独使用，必须与of放在一起使用。

2．The TV was invented around .A. the twenty centuryB. the twentieth centuryC. twentieth centuryD. twenty century【答案】 B【解析】【分析】句意电视大约是在二十世纪发明的。

二十世纪也就是第二十个世纪，因此使用序数词，序数词前必须使用定冠词the，故答案是B。

【点评】考查数词，注意序数词再具体语境中的运用。

3．—Where is Class ______?—It's on the ______ floor.A. Six; thirdB. Sixth; thirdC. Six; threeD. Sixth; three【答案】 A【解析】【分析】句意：——六班在哪里？——在六楼。

六班，Class Six，专有名词，六楼，the sixth floor，使用序数词，故答案是A。

【点评】考查数词的用法，注意基数词和序数词的用法区别。

4．There are ________________ months in a year. My birthday is in the ________________ month.A. twelve; twelveB. twelfth; twelfthC. twelve; twelfthD. twelfth; twelve【答案】 C【解析】【分析】句意：一年有12个月，我的生日在第12个月。

小学英语数词练习

1. The English for 10，440 is。

A. ten thousand ，four hundreds and fortyB. ten thousand, four hundred and fortyC。

ten thousands，four hundred and fortyD。

ten thousand and four hundred，forty2. ______of the workers in the factory is about two hundred, ______of them are women workers.A. The number，first—third B。

The number, one—third C。

A number, half D。

A number, three quarters3。

—-- Can you write the number eighty—five thousand ，six hundred and twenty—six？-——Yes，it is_______。

A。

85662 B. 85626 C. 85006 D。

850004。

About of the books in our school library are written in Chinese。

A. fouth-fifthsB. four –fifthC. four –fifths D。

fourths-fifth5。

The road is over meters long。

A。

six hundred and fifty—two B. six hundreds and fifty twoC。

six hundred，fifty –two D。

six hundred，fifty and two6。

January is New Year's Day.A. one B。

two C. first D。

数词专项练习习题

数词专项练习习题数词专项练习数词专项练习50题（一）() 1. Lincoln was born on ________.A. February 12, 1809B. 1809, February 12C. 1809, 12 FebruaryD. February 1809,12() 2. A _______ boy can sing the English song very well.A. ten-years-oldB. ten years oldC. ten-year-oldD. fifth years old() 3. An hour later, _____ minister was sent to see the “magic cloth”woven by those two men.A. twoB. the secondC. the twoD. second() 4. Abraham Lincoln was _______ President of the United States.A. 16B. the 16C. 16thD. the 16th() 5. Do you think there is any room for us ________?A. twoB. the twoC. secondD. the second() 6. ---How many students are there in your class?---________.A. Twenty nineB. Thirty and twoC. Forty-fiveD. fifties() 7. Which number is wrong?_______.A. NinetyB. Nint eenC. NinthD. Nineteenth() 8. The People’s Liberation Army was founded _______.A. on August 1, 1927B. in 1927, 1 AugustC. on August 1st, 1927D. in August 1, 1927() 9. The number 4,123 is read _______.A. four thousand one hundred and twenty-threeB. four thousand and one hundred twenty-threeC. four thousand and a hundred and twenty-threeD. four thousands a hundred and twenty-three() 10. The old professor still works hard though he is _________.A. in his sixtyB. in his sixtiesC. in sixtiesD. in the sixty() 11. This classroom is ________ ours.A. three times big asB. as three times big asC. three times as big asD. as big three times as() 12. The basketball team of our school ranks ________ in the match.A. threeB. thirdC. the threeD. the third() 13. ---Which is the car that he drives?---It’s ________.A. fifty twoB. the fifty-two carsC. the car fifty fourD. the fifty-fourth car() 14. Which of the following is wrong?________.A. He is a fifteen-year-old boy.B. He is at the age of 15.C. He is a boy of 15.D. He is fifteen year old.() 15. Our school is not very big. There are only ________ students.A. nine hundreds ofB. nine hundredC. nine hundredsD. nine hundred of() 16. ---How many new words are there in ________ lesson?---There are only _________.A. five; fifthB. fifth; fiveC. the fifth; the fiveD. the fifth; five() 17. ________, Coca-Cola began to enter China’s market.A. In 1970’sB. In 1970sC. In the 1970s’D. In the 1970s() 18. There was no bus in that small town. We had a ________.A. ten miles walkB. ten-mile walkC. ten mile’s walkD. tenth mile walk() 19. Today is the first day and ________.A. Tuesday is fourthB. Thursday is the fourthC. second is TuesdayD. a second is Thursday() 20. ---Which room do you live in?---________.A. The 201 RoomB. Room 201C. Room 201stD. The 201’s Room() 21. ---How many magazines do you have?---I have ________.A. twoB. bothC. twiceD. the second() 22. Three hundred thousand one hundred and seventy means _______.A. 3,170B. 3,117C. 300,170D. 30,170() 23. On May ________, ________ people traveled round the country.A. the first, millionsB. the first, millions ofC. first, the millionthD. first, millions() 24. ________ of them are dining at school.A. TwelveB. TwelfthC. The twelveD. The 12th() 25. It’s 7:17 is read ________.A. seven and seventeenB. seven sevenC. seven one sevenD. seven seventeen() 26. Four ________ two is two.A. plusB. minusC. timesD. divided by() 27. Three ________ five is eight.A. plusB. minusC. timesD. divided by() 28. Three ________ seven is twenty-one.A. plusB. minusC. timesD. divided by() 29. Forty-two ________ seven is six.A. plusB. minusC. timesD. divided by() 30. There are ________ days in a year.A. three hundred sixty and fiveB. three hundred and sixty-fiveC. three hundreds and sixty-fiveD. three hundred sixty-five()31. There are ________ students in that school.A. two thousand eight-sixB. two thousand eighty-sixC. two thousand and eighty-sixD. two thousands and eighty-six() 32. It took me ________ to get there.A. two hours and a halfB. two hours and halfC. two hour and a halfD. two hour and half() 33. September is _________ month of the year.A. the ninethB. the ninthC. ninethD. ninth() 34. Please pass me _______ book on the left.A. thirdB. threeC. the thirdD. the three() 35. ________ is a very tall boy.A. The twelveB. The twelvethC. The twelfethD. The twelfth()36. We have known each other for ________.A. a year and halfB. a year with halfC. a year and a halfD. a year with a half() 37. ---“What year is it?”---“It’s ________.”A. nineteen hundred and ninety-sevenB. nineteen and ninety-sevenC. nineteen ninety and sevenD. nineteen ninety-seven() 38. ---“What’s the date today?”---“It’s _________.”A. TuesdayB. June FourthC. June the fourD. June the fourth() 39. The train from Shanghai will arrive ________.A. in quarter past sixB. in a quarter past sixC. at quarter past sixD. at a quarter past six() 40. My friend was born on _________.A. three of July, 1979B. the third of July,1979C. 1979, July the thirdD. 1979, the third of July() 41. ________ is less than ________.A. One-third; two-thirdsB. One-third; two-thirdC. First-three; first-threesD. One-third; one-three() 42. ---Which lesson did you learn yesterday?---________.A. Lesson SevenB. Lesson seventhC. The 7 LessonD. 7 Lesson() 43. ---“What’s the date today?”---“It’s _______.”A. the fourth of mayB. the fourth MayC. May fourD. May the fourth() 44. 334 is read ________.A. three hundreds and thirty fourB. three hundreds thirty fourC. three hundred and thirty fourthD. three hundred and thirty-four() 45. In February, there are only _________ days.A. twenty nineB. twenty-ninethC. twenty-nineD. twenty eight() 46. There will be a comedy on TV at ________ this evening.A. seven past thirtyB. half past sevenC. seven the thirtyD. thirty to seven() 47. It took me ________ to find out the key to the drawer.A. one and half hoursB. one and a half hoursC. one and a half hourD. one and half hour() 48. I’m so tired after ________ walk.A. three hoursB. three hours’C. three hour’sD. three hour() 49. There are ________ stars in the sky.A. million ofB. millions ofC. the millionD. a million of() 50. The street is ________ wide.A. two metersB. two meterC. the two meterD. a two meter50题参考谜底1. A11. C21. A31. C41. A2. C12. D22. C32. A42. A3. B13. D23. B33. B 43. D 4. D 14. D 24. A 34. C 44. D 5. A 15. B 25. D 35. D 45. C 6. C 16. D 26. B 36. C 46. B 7. B 17. D 27. A37. D47. B8. A18. B28. C38. D48. B9. A19. B29. D39. D49. B10. B20. B30. B40. B50. A数词专项练习(二)() 76. Tuesday is the _______ day of a week in English.A. firstB. fifthC. thirdD. fourth() 77. There are _______ seasons in a year in our country.A. twoB. fourC. secondD. fourth() 78. The game of _______ Olympics will be held in Beijing in 2008.A. 29B. the 29thC. the 29D. 29th() 79. Most of the stars are much more bigger than the sun. But they are______ light years away from us.A. thousandB. thousandsC. thousand ofD. thousands of() 80. _______ of the surface(外表) of the earth is covered with water.A. First thirdB. Two thirdsC. One threeD. Two three() 81. There are _______ people in my family. We live on the _______ floorin a tall building.A. five, sixB. fifth, sixthC. fifth, sixD. five, sixth() 82. Boys and girls, we are going to learn _______ today.A. Four LessonB. the fourth lessonC. the Lesson FourD. the Four Lesson() 83. My lovely daughter is _______.A. eight years oldB. eight-year-oldC. eight year oldD. eight-years-old() 84. The flood happened _______.A. in the summer of 1998B. in the summer of 1998sC. in 1998 of the summerD. in 1998s of the summer() 85. February 28 should be read as _______.A. February of the 28thB. February of 28C. 28 of FebruaryD. the 28th of February() 86. ---How soon will you finish your work?---In about _______.A. one and a half monthB. one month and a halfC. one and half a monthD. a month and half() 87. We will have a _______ holiday. What about going to Suzhou?A. five daysB. five dayC. five-dayD. five-days() 88. We are sure the _______ century will bring us more hopes.A. twentieth-firstB. twentieth-oneC. twenty-oneD. twenty-first() 90. At the age of _______, he had his own lab.A. thirtyB. thirtiethC. the thirtiethD. the thirty() 91. Five times five is _______.A. fiveB. zeroC. tenD. twenty-five() 92. _______ are in the army.A. Two their sonsB. Their two sonsC. Their sons twoD. Two sons their() 93. My sister is a student of _______.A. the First ClassB. Class OneC. One ClassD. Class First() 94. The boy can count from one to _______.A. hundredB. a hundredC. one hundredsD. hundreds() 95. Their house is about _______ as big as ours.A. times threeB. three timeC. time threeD. three times() 96. ---Would you like some fruit, madam?---Oh, yes. ______, please.A. 5 kilo bananasB. 5 kilos of bananasC. 5 kilo of bananasD. 5 kilos of banana() 97. This building is for a _______.A. family of threeB. three peopleC. three peoples familyD. three people's family() 98. Ten and five is _______.A. fiveB. fiftyC. fifteenD. two() 99. There are _______ in a day.A. 24 hoursB. 12 hoursC. four hoursD. 365 hours() 100. Look at the table. Tom wants to buy a hamburger, a large coke and an ice-cream. How much will he pay?Hamburger $ 2.60 Orange juice $ 1.20Hot dog $2.15 Coffee $1.50Ice-cream $2.00 Water $0.50Popcorn $1.00 Large coke $1.00A. Three dollars and sixty cents.B. Five dollars and thirty-five cents.C. Five dollars and sixty cents.D. Two dollars.数词专项练习(二)参考谜底：76-80 CBBDB 81-85 DBAAD 86-90 BCDCA。

小学英语数词专项练习【三篇】

【导语】海阔凭你跃，天⾼任你飞。

愿你信⼼满满，尽展聪明才智;妙笔⽣花，谱下锦绣第⼏篇。

学习的敌⼈是⾃⼰的知⾜，要使⾃⼰学⼀点东西，必需从不⾃满开始。

以下是为⼤家整理的《⼩学英语数词专项练习【三篇】》供您查阅。

【第⼀篇】基数词1. 表⽰数量多少的词是基数词，如：one, two, three等。

2. 数词的构成1）从1－12分别由从one到twelve，12个各不相同的词表⽰。

2）从13－19均以后缀-teen结尾。

3）从20－90的整⼗数词均以后缀-ty结尾。

表⽰“⼏⼗⼏”时，个位和⼗位之间需加连字符。

4）整百数由1—9加hundred构成。

5) 整百数和整⼗数之间由and连接，⼗位与个位之间要加连字符“-”。

如果⼗位数为零，那就在百位和个位之间⽤and连接。

6）千 thousand 百万 million ⼗亿 billion序数词基变续，有规律，词尾加上th;⼀⼆三，特殊记，词尾字母t,d,d(first,second,third);⼋减t(eighth), 九去e (ninth)，f来把ve替(five---fifth,twelve---twelfth); 单词ty作结尾，ty变成tie(twenty-twentieth);若是碰到⼏⼗⼏，只变个位就可以1) 第⼀百、第⼀千、第⼀百万、第⼗亿都是在基数词后直接加th构成。

2）.序数词的缩略形式是由阿拉伯数字加序数词的最后两个字母构成。

3) 序数词前必须加定冠词the年、⽉、⽇的表⽰法1986年9⽉1⽇ September 1st, 1986 / 1st September, 1986时刻的表⽰法第B、半点的表⽰法表⽰半点钟时，⽤“钟点数+ thirty”或“half+ past +钟点数”表⽰C、“⼏点⼏分”的表⽰法（1）⽤“钟点数+分钟数”表⽰（2）分钟数在30分钟以内的，⽤“分钟数+ past +钟点数”表⽰，意为“⼏点过⼏分“（3）分钟数超过30分钟的，⽤“（60-分钟数）+ to +下⼀个钟点数”表⽰，意为“差⼏分到⼏点”【第⼆篇】⼀．⽤括号内所给数词的正确形式填空.28′1.We are in Class________（3）.2.We have________（12）months of the year.December is the _____________（12）one.3.This is my________（1）bag.4.My birthday is Dec.________（21）.5.I have________（3）books.I like my________（3） book.⼆、根据句⼦意思填空。

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外研版英语数词专项练习一、初中英语数词1．—____________of volunteers will be needed for the 2020 Olympic Games.—Let's go and____________ them.A.Thousands, joinB.Thousand, be a member ofC.Three thousand, take part inD.Thousands, be in【答案】A【解析】【分析】句意：——2020年奥运会将需要几千名志愿者。

——让我们去加入他们吧。

thousands of，几千，join sb，加入，和某人一起，故选A。

【点评】考查数词，注意join sb的用法。

2．—How old is your daughter?— ______. We had a special party for her ______ birthday yesterday.A. Nine; nineB. Nine; ninthC. Ninth; ninthD. Ninth; nine【答案】 B【解析】【分析】句意：——你的女儿多大了？——九岁，昨天我们给她过了一个特殊的九岁的生日聚会。

第一空说明年龄，应使用基数词，第二空说明的是第几个生日，使用序数词，故答案是B。

【点评】考查数词，注意基数词和序数词的用法。

3．—What day is the ______ day of the week?—It's Friday.A. fifthB. fiveC. sixD. sixth【答案】 D【解析】【分析】句意：——一周的第六天是星期几？——星期五。

A.第五；B.五；C.六；D.第六。

星期五是一周的第六天，因此使用sixth，故答案是B。

【点评】考查序数词，追序数词在具体语境中的运用。

4．Two students to the opening ceremony last Friday.A. hundreds; were invitedB. hundred; were invitedC. hundreds of; invited【答案】 B【解析】【分析】句意：上周五有200名学生被邀请参加开幕式。

【点评】考查数量的表达方式以及被动语态。

注意确切数量与不确切数量在表达上的不同。

5．—Do you know the boy is sitting next to Peter？—Yes. He is Peter's friend. They are celebrating his birthday.A. who; ninthB. that; nineC. which; ninth【答案】 A【解析】【分析】句意：——你知道那个坐在彼得旁边的男孩吗?——是的。

他是彼得的朋友。

他们正在庆祝他的九岁生日。

分析句子结构可知，第一空所在句子是定语从句，先行词是人，连接词在从句中作主语，所以应该用who/that引导，which连接定语从句时先行词应该是物，故排除C；nine九，基数词；ninth第九，序数词；第二空根据空后的birthday为名词单数可知，此处需要序数词，表示某人几岁生日应该用序数词表示第几个生日，故选A。

【点评】考查定语从句的连接词的辨析和序数词。

注意区别定语从句的连接词的使用原则，理解单词词义。

6．There are ______________ months in a year. December is the ______________ month of a year.A. twelve; twelveB. twelfth; twelfthC. twelve; twelfthD. twelfth; twelve 【答案】 C【解析】【分析】句意：一年有十二个月，十二月是一年中的第十二个月。

根据基数词表示数量以及months是名词复数可知，第一个空应填基数词twelve；根据序数词表示顺序以及month是名词单数可知，第二个空应用序数词twelfth。

故选C。

【点评】考查基数词及序数词的基本含义及用法。

注意twelfth的书写。

7．— Is Dongjin High-speed Railway Station the largest in Hubei Province?— Yes, of course. It's just a little smaller than the largest one in Wuhan.A. firstB. secondC. thirdD. fourth【答案】 B【解析】【分析】句意：——靳东高速火车站是湖北省第二大的吗？——是的，当然。

它只是比武汉最大的稍微小一点。

A第一，B第二，C第三，D第四，the+序数词+最高级，固定搭配，第几大，根据It's just a little smaller than the largest one，可知只有一个比它大，故它是第二大的，故选B。

【点评】考查形容词最高级，注意the+序数词+最高级的用法。

8．—___is the population of China, Jack?—Let me think for a moment, it is about___.A. How many; 1,400 millionB. What; 1,400 millionC. What; 140 millionD. How many; 140 million【答案】 B【解析】【分析】句意：——中国的人口是多少，杰克？——让我想想，大约是14亿。

提问人口用what，根据常识可知，实际情况是中国有1,400 million，人口，故选B。

【点评】考查特殊疑问词，注意what提问人口的用法。

9． of the students in our class _____going to the summer camp in Beijing next week.A. Two fifths, isB. Second fifths, areC. Second fifths, isD. Two fifths, are 【答案】 D【解析】【分析】句意：我们班五分之二的学生下周要去北京参加夏令营。

分数的构成分子用基数词,分母用序数词，当分子大于一时，分母用复数。

分数+of+名词作主语时，如果名词是复数，谓语动词用复数结构，故选D。

【点评】此题考查分数和主谓一致。

注意分数+of+名词作主语时,谓语动词的结构。

10．Our country is nearly years old. We'll celebrate its birthday on October 1, 2019 around the country.A. seventy, seventyB. seventy, seventiethC. seventieth, seventyD. seventieth, seventieth【答案】 B【解析】【分析】句意：我们的国家接近70岁了，我们将在2019年10月1日全国庆祝它的第七十个生日。

seventy，70，基数词；seventieth，第70，序数词。

表达几岁时用基数词+year（s）+old，表达几岁生日时用one's+序数词+birthday，故选B。

【点评】考查数词表达，注意平时识记固定搭配，理解句意。

11．—How handy books are there on the shelf？—Well. I think there are books.A. two hundred and forty-sixB. two hundreds and fortyC. two hundred fourteen【答案】 A【解析】【分析】句意：——书架上有多少本书？——嗯，我认为有246本书。

表示数量246时，百位与十位之间要用and连接，且hundred被具体数字修饰时，用单数形式。

故答案选A。

【点评】考查数学词表达，注意平时识记几百几十几的表达。

12．It's about ________________ kilometers from Nanchong to Chengdu.A. two hundredsB. two hundreds ofC. two hundredD. two hundred of【答案】 C【解析】【分析】句意：从南昌到成都大约有两百公里。

由句意可知，这里说的是“两百公里”two是基数词表示确切的数字，不能用百、千的复数形式，“two hundred”；但当基数词表示不确切数字，百、千后就要用复数形式，如“hundreds of”，故选C。

【点评】考查基数词的用法，注意表示确切的数字时，其后不能用百、千的复数形式。

13． should not be allowed to drive.A. Sixteen-year-oldB. Sixteen years oldC. Sixteen-year-oldsD. Sixteen year olds【答案】 C【解析】【分析】句意：16岁的青少年不允许开车。

sixteen-year-olds：十六岁的孩子（青少年），是名词性短语；sixteen-year-old：通常只做形容词用，十六岁的；sixteen years old：十六岁。

结合句意，故答案为C。

【点评】考查数词和名词的用法。

注意识记名词sixteen-year-olds。

14．—Where is Class ______?—It's on the ______ floor.A. Six; thirdB. Sixth; thirdC. Six; threeD. Sixth; three【答案】 A【解析】【分析】句意：——六班在哪里？——在六楼。