专项训练数词综合分类解析
英语数词综合分类解析含答案解析
英语数词综合分类解析含答案解析一、初中英语数词1． 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。
2．—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。
3．______ should not be allowed to go out at night.A. Twelve-years-oldB. Twelve-year-oldsC. Twelve years oldD. Twelve year olds 【答案】 B【解析】【分析】句意：12岁的孩子不应该被允许夜晚出去。
数量词作定语应用连字符，并且量词用单数，故选B。
【点评】考查数量词作定语的用法。
4．Lin Tao, an ______ boy, was very brave and helped his classmates run out of the classroom when the earthquake happened.A. 8-year-oldB. 8 year oldC. 8-years-oldD. 8 year olds【答案】 A【解析】【分析】句意：林涛，八岁的男孩，很勇敢并且在地震发生时帮助他的同学从教室里跑出来。
英语数词综合分类解析含答案
英语数词综合分类解析含答案一、初中英语数词1．There are 24 solar terms in a year. Grain Rain often starts in April, the ________ month of the year.A. ThirdB. fourthC. fifth【答案】 B【解析】【分析】句意：一年有24个节气。
谷物雨通常在一年中的四月开始。
A：Third 第三；B：fourth第四；C：fifth第五。
空格前有定冠词the与可数名词单数month，要用序数词。
根据 Grain Rain often starts in April ，可知四月份是一年中的第四个月，要用序数词fourth，故选B。
【点评】考查序数词辨析。
根据语境和生活常识，选择正确的序数词。
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．_______, when Marx was already _______, he found it was important to study the situation in Russia, so he began to learn Russian.A. In 1870s, in his fiftiesB. In 1870s, in fiftiesC. In the 1870s, in fiftiesD. In the 1870s, in his fifties【答案】 D【解析】【分析】句意：在十九世纪七十年代，马克思已经五十岁了，他觉得研究俄国的形势很重要，便开始学习俄语。
初一英语数词语法知识总结(讲解+考点+综合练习)：数 词
第四章数词一、数词概述1、数词的定义：表示数目多少或顺序先后的词为数词。
2、数词的分类：数词可分为基数词和序数词，基数词表示数量的多少，序数词表示顺序的先后。
二、数词考点纵览三、综合练习( ) 1. Lincoln was born on ________.A. February 12th, 1809B. 1809, February 12thC. 1809, 12th FebruaryD. February 1809,12th( ) 2. A _______ boy can sing the English song very well.A. ten-years-oldB. ten years oldC. ten-year-oldD. ten year 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. NinteenC. NinthD. Nineteenth ( ) 8. The People’s Liberation Army was founded _______.A. on August 1st, 1927B. in 1927, 1 AugustC. on 1st August , 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 boyB. He is at the age of 15C. He is a boy of 15D. 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. ________of the students go to school by car.A. Two threeB. Two thirdC. Second thirdsD. Two thirds ( ) 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. 201 RoomB. Room 201C. Room 201stD. 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. ________ boy is very tall .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 hundreds 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 seven LessonD. Lesson seven( ) 43. “What’s the date today?” “It’s _______.”A. fourth 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 meter参考答案1.A2. C3. B4. D5. A6. C7. B8. A9. A 10. B 11.C 12. D 13. D 14. D 15. B 16. D 17. D 18. B 19. B20. B 21. A 22. C 23. B 24. A 25. D 26. B 27. A 28. C29. D 30. B 31. C 32. A 33. B 34. C 35. D 36. C 37. D38. D 39. D 40. B 41. A 42. A 43. D 44. D 45. C 46. B47. B 48. B 49. B 50. A文档说明(Word文档可以删除编辑)专注于精品文档：中考、高考、数学语文英语试卷、高中复习题目、小学试卷教案合同协议施工组织设计、期中、期末等测试，本文档目的是为了节省读者的工作时间，提高读者的工作效率，读者可以放心下载文档进行编辑使用.文档来源网络改编，审核有可能疏忽，如果有错误或侵权，请联系本店马上删除。
人教版英语英语数词专项及解析含答案解析推荐精选
人教版英语英语数词专项及解析含答案解析推荐精选一、初中英语数词1．There are 24 solar terms in a year. Grain Rain often starts in April, the ________ month of the year.A. ThirdB. fourthC. fifth【答案】 B【解析】【分析】句意：一年有24个节气。
谷物雨通常在一年中的四月开始。
A：Third 第三；B：fourth第四；C：fifth第五。
空格前有定冠词the与可数名词单数month，要用序数词。
根据 Grain Rain often starts in April ，可知四月份是一年中的第四个月，要用序数词fourth，故选B。
【点评】考查序数词辨析。
根据语境和生活常识，选择正确的序数词。
2．_________ of the teachers are women in our school.A. Two thirdB. Two threesC. Two thirdsD. Two【答案】 C【解析】【分析】句意：在我们学校三分之二的老师是女老师。
表达分数时，分子用基数词，分母用序数词，分子大于1时，分母用复数。
三分二，二是分子，所以用基数词two，三是分母，所以用序数词third，分子二大于一，所以分母third用复数thirds，所以三分之二用two thirds，故选C。
【点评】考查分数表达，注意平时识记其表达规则。
3．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。
【英语】数词综合分类解析(word)1
【英语】数词综合分类解析（word）1一、初中英语数词1．It's the ______ time for me to visit the Shunfeng Park. And I want to visit it a sixth time.A. fifthB. fiveC. fifthsD. the five【答案】 A【解析】【分析】句意：这是我第五次参观顺丰公园，我想第六次去参观。
A序数词，第五，B基数词，五，根据the定冠词可知，定冠词后是序数词，故选A。
【点评】考查数词，注意定冠词后是序数词的用法。
2．My family lives on ________________ floor of the building.A. twelveB. the twelfthC. twelfthD. the twelve【答案】 B【解析】【分析】句意：我家住在这栋楼的第20层。
表示第几层，用the+序数词+floor，固定搭配，twelve，12，基数词；twelfth，第12，序数词，故选B。
【点评】考查序数词用法，注意平时识记the+序数词+floor。
3．— 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。
英语数词专项习题及答案解析及解析
英语数词专项习题及答案解析及解析一、初中英语数词1．The insurance company paid Mr Li two___________ dollars for his stolen vase.A. millionB. millionsC. million ofD. millions of【答案】 A【解析】【分析】句意：保险公司付给李先生两百万美元为了他被偷来的花瓶。
表示确切数字时用基数词+million表示几百万；表示非确切数字时用millions of，数百万的......。
two，2，是基数词，所以用million，故选A。
【点评】考查数学词的表达，注意平时识记确切数字时用基数词+million表示几百万；表示非确切数字时用millions of数百万的。
2．—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。
3．—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。
人教版英语英语数词综合分类解析含答案解析
人教版英语英语数词综合分类解析含答案解析一、初中英语数词1．—Hi, Ted! How was your trip to Mount Huangshan last month?—Fantastic! I am expecting to go there for a _____ time.A. oneB. firstC. twoD. second【答案】 D【解析】【分析】句意：——你好，泰德！上个月去黄色的旅行怎么样呢？——好极了！我盼望这能再去一次。
one一；first第一；two二；second第二，根据Hi, Ted! How was your trip to Mount Huangshan last month?可知去过一次，不是第一次去，想再去一次，second又一次，故选D。
【点评】考查数词用法。
注意序数词表示再一，又一的用法。
2．______ of the students in our school are boys.A. Two threeB. Second threeC. Two thirdsD. Two third【答案】 C【解析】【分析】句意：我们学校的学生中有三分之二是男生。
分数词是分子是基数词，分母是序数词，分子大于一，分母加s，因此二分之一是two thirds，故选C。
【点评】考查分数，注意分子是基数词，分母是序数词，分子大于一，分母加s的用法。
3．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。
4．—____________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。
数词综合分类解析经典1
数词综合分类解析经典1一、初中英语数词1．There are tourists visiting Beijing every year.A. hundredB. hundredsC. hundreds ofD. two hundreds of【答案】 C【解析】【分析】句意：每年有数百的游客参观北京。
表达确切数字用基数词+hundred，表达非确切数字用hundreds of，前面没有具体数字，因此用hundreds of，故选C。
【点评】考查数学词表达，注意平时识记。
2．— 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。
3．—___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。
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专项训练数词综合分类解析一、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．______ of the students in our school are boys.A. Two threeB. Second threeC. Two thirdsD. Two third【答案】 C【解析】【分析】句意：我们学校的学生中有三分之二是男生。
分数词是分子是基数词，分母是序数词，分子大于一，分母加s，因此二分之一是two thirds，故选C。
【点评】考查分数，注意分子是基数词，分母是序数词，分子大于一，分母加s的用法。
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．—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。
5．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。
名词复数months前是基数词，twelve是基数词，the定冠词后是序数词，twelfth是序数词，故选C。
【点评】考查数词，注意名词复数前是基数词，定冠词后是序数词的用法。
6．Every year, ________ books are given away to the poor children in the countryside. A. thousand B. thousands of C. thousand of【答案】 B【解析】【分析】句意：每年上千本书被捐给农村的贫困孩子们。
thousand和of 连用时要用复数，thousands of，成千上万的，固定短语，故选B。
【点评】此题考查数词用法。
注意固定短语thousands of。
7．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。
表达某人几岁生日用one's+序数词+birthday，seventy，70，基数词；seventieth第七十，序数词，排除C、D，故选B。
【点评】考查序数词用法，注意平时识记one's+序数词+birthday。
8．There are 24 solar terms in a year. Grain Rain often starts in April, the ________ month of the year.A. ThirdB. fourthC. fifth【答案】 B【解析】【分析】句意：一年有24个节气。
谷物雨通常在一年中的四月开始。
A：Third 第三；B：fourth第四；C：fifth第五。
空格前有定冠词the与可数名词单数month，要用序数词。
根据 Grain Rain often starts in April ，可知四月份是一年中的第四个月，要用序数词fourth，故选B。
【点评】考查序数词辨析。
根据语境和生活常识，选择正确的序数词。
9．Two ____________students are from Korea.A. hundreds ofB. hundredC. hundredsD. hundred of【答案】 B【解析】【分析】句意：有两百名学生来自朝鲜。
hundred，百，其前接具体数词时，用其单数形式，当其前没有具体数字修饰时，用其复数形式，后和of连用，hundreds of，成百上千，根据two，基数词，hundred用其单数形式，故选B。
【点评】考查整数的表达。
注意识记hundred的词义和用法。
10．—Hi, Ted! How was your trip to Mount Huangshan last month?—Fantastic! I am expecting to go there for a _____ time.A. oneB. firstC. twoD. second【答案】 D【解析】【分析】句意：——你好，泰德！上个月去黄色的旅行怎么样呢？——好极了！我盼望这能再去一次。
one一；first第一；two二；second第二，根据Hi, Ted! How was your trip to Mount Huangshan last month?可知去过一次，不是第一次去，想再去一次，second又一次，故选D。
【点评】考查数词用法。
注意序数词表示再一，又一的用法。
11．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。
12．It's the ______ time for me to visit the Shunfeng Park. And I want to visit it a sixth time.A. fifthB. fiveC. fifthsD. the five【答案】 A【解析】【分析】句意：这是我第五次参观顺丰公园，我想第六次去参观。
A序数词，第五，B基数词，五，根据the定冠词可知，定冠词后是序数词，故选A。
【点评】考查数词，注意定冠词后是序数词的用法。
13．Two ________ students ________ to the opening ceremony last Friday.A. hundreds; were invitedB. hundred; were invitedC. hundreds of; invitedD. hundred of; invited【答案】 B【解析】【分析】句意：两百名学生被邀请参加了上周五的开幕式。
hundred和数字连用用单数，两百是two hundred，学生和邀请之间是被动关系，用被动语态，根据可知是一般过去时，所以用一般过去时的被动语态，一般过去时的被动语态是was/were+及物动词的过去分词，students是复数，用 were invited，故答案为B。
【点评】考查数词和被动语态。
注意hundred和数字连用时用单数。
14．When Huawei P20 came out, ______ people couldn't wait to buy one in our town.A. thousandB. thousandsC. thousand ofD. thousands of【答案】 D【解析】【分析】句意：当华为P20上市时，成千上万的人迫不及待地想在我们镇上买一台。
thousand，千，其前有具体数词修饰时，用其单数形式，当其前没有具体数词修饰时，用其复数形式，且和of连用，thousands of，成千上万，这里没有具体数词修饰，故选D。
【点评】考查整数的表达。
注意识记thousand的用法。
15．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。