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. hundred B. hundreds C. hundreds of D. 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 century B. the twentieth century C. twentieth century D. 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; third B. Sixth; third C. Six; three D. 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; twelve B. twelfth; twelfth C. twelve; twelfth D. 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。
5．— 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. first B. second C. third D. 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。
6．Nowadays, ________ people like HUAWEI phones better, and about ________ of them are adults. A. the number of; four-fifths B. a number of; four-fifth C. a number of; four-fifths D. the number of; four-five 【答案】 C 【解析】【分析】句意：现在大量的人更喜欢华为手机，并且大约他们中的五分之四是成年人。the number of，表示......的数量；a number of，表示大量......，大量人们喜欢华为手机，因此用a number of，表泛指。表示分数时分母用序数词，分子用基数词，分子大于1时，分母用复数，四是分子，所以用基数词four，5是分母，用序数词，分子大于一，所以用复数fifths，所以五分之四用four-fifths，故选C。 【点评】考查短语辨析及分数表达，注意平时识记，理解句意。
7．Two ____________students are from Korea. A. hundreds of B. hundred C. hundreds D. 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。
8．—Which month of the year do you like best? — July, the _________ month, because summer vacation begin in this month. A. seven B. six C. seventh D. sixth 【答案】 C 【解析】【分析】句意：——你最喜欢一年中哪个月？——七月，第七个月。因为在这个月暑假开始了。A.七，基数词；B.六，基数词；C.第七，序数词；D.第六，序数词。根据常识可知七月是一年中第七个月，所以用序数词seventh，故选C。 【点评】考查数词用法，注意平时识记，理解句意。
9．—How handy books are there on the shelf？ —Well. I think there are books. A. two hundred and forty-six B. two hundreds and forty C. 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。
10．There are people in Dale's family. They live on the floor. A. five; nine B. fifth; nine C. five; ninth D. fifth; ninth 【答案】 C 【解析】【分析】句意：在戴尔的家里有五个人。他们住在九楼。基数词放在名词前修饰名词，表示数量，因此用five；序数词放在floor前面表示顺序，因此用ninth，故选C。 【点评】此题考查数词。注意基数词和序数词的使用规则。
11．Lin Tao, an ______ boy, was very brave and helped his classmates run out of the classroom when the earthquake happened. A. 8-year-old B. 8 year old C. 8-years-old D. 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。数量词在句中作前置定语，注意量词用单数，并且带连字符号，故选A。 【点评】考查数量词在句中作定语的用法。
12．In 2010, ___________ people from all over the world came to Shanghai to see the World Expo. A. ten million of B. ten millions C. million of D. millions of 【答案】 D 【解析】【分析】句意：2010年，来自世界各地的数百万人来到上海观看世博会。表示确切数字用基数词+million，表示几百万；表示非确切数字时用millions of，数百万，固定搭配。ten10，基数词，所以用ten million，排除A、B，故选D。 【点评】考查数学词的表达，注意平时识记表示确切数字用基数词+million，表示几百万；表示非确切数字时用millions of，数百万。
13．It's never too old to learn. Karl Marx began to learn English in his ________. A. fifties B. fiftieth C. fifty D. the fiftieth 【答案】 A 【解析】【分析】句意： 活到老，学到老。卡尔马克思在他五十多岁时开始学习英语。 in one's +整十数字的复数形式表示在某人……岁时，固定搭配，fifty，基数词，复数是fifties，所以，在他五十多岁时是in his fifties，故答案为A。 【点评】考查数词的用法及固定搭配。在某人五十多岁时是in one's fifties。
14．Did you know that the earth is home to ______ animals? A. million B. millions C. million of D. millions of 【答案】 D
外研版英语英语数词专项练习(附答案)含答案推荐精选
外研版英语英语数词专项练习(附答案)含答案推荐精选一、初中英语数词1．We are proud of our country. The year 2019 is her ____ birthday.A. seventyB. the seventyC. the seventiethD. seventieth【答案】 D【解析】【分析】句意：我们为我们的国家感到骄傲。
2019年是她的70岁诞辰。
表示几岁的生日，要用序数词，因此排除A、B；又因前面有物主代词her，因此不用加定冠词，故选D。
【点评】考查序数词的基本用法。
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 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。
4．—Dad, about of our classmates wear glasses.—Oh, that's terrible. You all should take good care of your eyes.A. three fourthB. third fourthC. third fourthsD. three quarters【答案】 D【解析】【分析】句意：——爸爸，大约四分之三的同学戴眼镜。
(英语)英语数词练习题及答案及解析
（英语）英语数词练习题及答案及解析一、初中英语数词1．Ten years ago the population of our village was that of theirs.A. as twice large asB. twice as large asC. twice as much asD. as twice much as 【答案】 B【解析】【分析】句意：十年前，我们村子的人口是他们的两倍。
根据句意可知，这里考查的是表示倍数的句型，twice在这里的意思是两倍，twice as…as，表示是……的两倍，并且修饰人口众多时用形容词large或big，因此是twice as large as，故选B。
【点评】考查倍数的表达方式。
2．—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。
3．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。
初中英语-数词专项练习(精选习题及答案解析)
数词习题精选1. Which number is wrong? _______. （）A. NinetyB. NinteenC. NinthD. Nineteenth2. -How old is your daughter? （）-_________. We had a special party for her _________ birthday last week.A. Ninth; ninthB. Nine; nineC. Ninth; nineD. Nine; ninth3. There are ____ students in our school. （）A. four—hundred and forty—fiveB. four hundred and forty—fiveC. four hundreds and forty—fiveD. four hundred and forty five4. 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-three5．How do you say 15,858 in English? （）A. Fifteen thousands, eight hundred and fifty-eightB. Fifteen thousand, eight hundreds and fifty eight.C. Fifteen thousand, eight hundred and fifty-eightD. Fifteen thousand and eight hundred and fifty-eight.6. Tuesday is the _______ day of a week in English. （）A. firstB. secondC. thirdD. Fourth7. The students went out of the room___. （）A. one by twoB. one by oneC. two by anotherD. one by the other8. I've been a student there for nearly two and _______ half years. （）A.aB.anC.theD./9. --- 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 half10. 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 hour11. Do you think there is any room for us ________ ? （）A.twoB. the twoC. secondD. the second12. 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.13．—How old is Steve? （）—He is ____________ and he has an ___________ sister.A. 13-year-old; 10 years oldB. 13 years old; 11-year-oldC. 13 years old; 10-years-oldD. 13-years-old; 11-years-old14. Their house is about ___ as big as ours. （）A. times threeB. three timeC. time threeD. three times15．of the coats made of cotton. They feel comfortable. （）A.Two-thirds; is B. Two-thirds; areC. Two-third; isD. Two –third; are16．--- Do you mind telling us something about this area? （）--- Not at all. ________ of the land in this area _________ covered with trees and grass.A. Two fifth, isB. Two fifth, areC. Two fifths, isD. Two fifths, are17．______ of the floor _______ wet. （）A. Three quarter;isB. Three fourths; isC. Three fourth;areD. Three quarters;are18．About _____ of the workers in my company ______ to work every day．（）A．two-nineths; drives B．two-nineths; driveC．two-ninths; drives D．two-ninths; drive19．–Can I help you? -- Yes, I’d like _______for my twin daughters. （）A.two pair of shoesB. two pair of shoeC. two pairs of shoesD. two pairs of shoe20．We don’t have enough nurses to look after the patients. At least _____ are needed. （）A. ten another nursesB. more ten nursesC. other ten nursesD. another ten nurses21. At night we can see ______ stars in the sky. （）A. thousands and thousands ofB. thousand and thousands ofC. a thousand and thousandsD. thousand and thousand22．The ________ World Table Tennis Championship began ________ the morning of May 25, 2010 ________ Moscow, Russia. （）A．Fifty; in; in B．Fiftieth; on; in C．Fiftieth; in; on D．Fifty; on; in23. The train from Shanghai will arrive ________. （）A. in quarter past sixB. in a quarter past sixC. at quarter past sixD. at a quarter past six24. “What's the date today?”“It's _________.”（）A. TuesdayB. June FourthC. June the fourD. June the fourth25. “What year is it?”“It's ________.”（）A. nineteen hundred and ninety-sevenB. nineteen and ninety-sevenC. nineteen ninety and sevenD. nineteen ninety-seven26. The basketball team of our school ranks ________ in the match. （）A. threeB. thirdC. the threeD. the third27. ________, Coca-Cola began to enter China's market. （）A. In 1970'sB. In 1970sC. In the 1970s'D. In the 1970s数词专项练习题（答案）1.B2.D3.B4.A5．C【解析】试题分析：在英语中，当数次表示具体数字时，用单数形式。
英语数词专项练习题含答案解析
英语数词专项练习题含答案解析一、初中英语数词1．—___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。
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．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。
英语数词专题训练答案
英语数词专题训练答案一、初中英语数词1．—It's excited to hear that Jessie J got the King of Singer 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．Did you know that the earth is home to______animals?lionlionslion oflions of【答案】D【解析】【分析】句意：你知道地球是几百万动物的家园吗？millions of，固定搭配，几百万的；数词+million，表示具体的……百万，此时million是单数形式；空前没有具体数词，因此用millions of，故选D。
【点评】考查数词，注意millions of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．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。
中考英语数词用法练习题50题(答案解析)
中考英语数词用法练习题50题(答案解析)1. There are ______ months in a year.A. twelveB. twelfthC. the twelveD. the twelfth答案解析：A。
本题考查基数词的用法。
基数词表示数量，这里说一年有12个月，是数量的概念，所以用twelve。
选项B“twelfth”是序数词，表示顺序，不符合题意。
选项C“the twelve”这种表达是错误的，基数词前一般不加the（表示特指等特殊情况除外）。
选项D“the twelfth”是序数词，不能用来表示数量。
2. My sister is ______ girl in the family.A. the thirdB. threeC. a thirdD. third答案解析：A。
这里考查序数词的用法。
“the + 序数词”表示顺序，句意为我的姐姐是家里的第三个女孩，表示顺序关系，所以用the third。
选项B“three”是基数词，不能表示顺序。
选项C“a third”表示“又一个，再一个”，不符合句子语境。
选项D“third”单独使用时不能表示特定的顺序，前面需要加the。
3. I have ______ books.A. fiveB. fifthC. the fiveD. a five答案解析：A。
本题考查基数词的用法。
基数词用于表示数量，句意为我有五本书，是数量的概念，所以用five。
选项B“fifth”是序数词，不能表示数量。
选项C“the five”这种表达错误，基数词前一般不加the（特殊情况除外）。
选项D“a five”这种表达不存在。
4. This is my ______ time to visit Beijing.A. twoB. secondC. the secondD. a second答案解析：B。
这里考查序数词的用法。
“my + 序数词+ time”表示“我的第几次”，这里表示这是我第二次参观北京，所以用second。
人教版英语英语数词专项练习(附答案)含答案解析推荐精选
人教版英语英语数词专项练习(附答案)含答案解析推荐精选一、初中英语数词1．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。
2．Did you know that the earth is home to ______ animals?A. millionB. millionsC. million ofD. millions of【答案】 D【解析】【分析】句意：你知道地球是几百万动物的家园吗？millions of，固定搭配，几百万的；数词+million，表示具体的……百万，此时million是单数形式；空前没有具体数词，因此用millions of，故选D。
【点评】考查数词，注意millions of的用法。
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。
小学英语语法专题训练：数词(含答案)
小学英语语法专题训练：数词一、单选题（共28题）1.This city has got seven ________ people.A. millionB. millionsC. millions of2.I think ten hundred is a ______ .A. thousandB. millionC. kilometre3.There are chickens in the photo.A. aB. oneC. three4.There are twenty-five in the class.A. childB. childrenC. girl5.There weren't buses.A. someB. anyC. one6.three × four =A. elevenB. sevenC. twelve7.one + eight =A. nineB. sixC. seven8.nine - six =A. fiveB. threeC. six9.seven - two =A. fiveB. nineC. four10.— How many pandas are there?— There are pandas.A. oneB. threeC. a11.Two and is seven.A. sixB. fiveC. four12.ten ÷ five =A. fourB. twoC. five13.Nine and three is ______.A. elevenB. twelveC. six14.One, two, three, ______, five.A. fourB. oneC. five15.________________ I write the name of a friend.A. WellB. OnceC. OneD. First16.Children's Day is on the of June.A. firstB. secondC. thirdD. fourth17.Our art room is on the ___________floor.A. oneB. twoC. second18.New Year is on ________ day of January.A. oneB. firstC. the first19.Thursday is his _____________________ birthday.A. elevenB. eleventhC. eleven's20.I can see thirteen _______.A. kiteB. a kiteC. kites21.______plates?A. AB. someC. Six22._________ peas lived together in a pod.A. fiveB. FifthC. Five23.Jenny came _____ in the game.A. oneB. secondC. firstly24.Look at that book. There are ________ words in it.A. three hundredB. three hundredsC. three thousands25.He is 1.6 tall. He is than this desk.A. meter; tallB. meters; tallC. meters; taller26.Now there are only about ________ pandas in the wild.A. one thousand and six hundredsB. one thousand six hundredC. one thousand and six hundred27.There are ________ girls in our school.A. nine hundredsB. nine hundred forty oneC. nine hundred and forty-one28.Tomorrow is my ______________ birthday. My parents will buy a big cake for me.A. twelveB. twentyC. twelfth二、选词填空（词汇运用）（共2题；共2分）29.The Great Wall is about twenty________ (thousand/thousands) kilometres.30.It was the ________ (first/one) time for me.三、语法填空（共16题；共17分）31.There are two________ (library) in our school.32.I have three________ (pen friend) from the US.33.Our music room is on the ________(one) floor.34.There are ________(third) computer rooms in my school.35.There are twenty________ (child) in the class.36.The music room is on the ________ (two) floor.37.It's our ________ (one) spaceship.38.It is more than two________ （thousand）years old.39.My bedroom is on the ________ (two) floor.40.May is the________(five) month of a year.41.The ________(three) day, we went to the Great Wall.42.Are you going to eat or play with the toys________(one)?43.Our classroom is on the ________ (three) floor.44.The ________ (two) and the ________ (one) peas want to fly to the sun.45.Miss Liu is on the ________ (three) floor.46.I live on the________ (nine) floor of the building.四、填空题（共2题；共10分）47.算一算，将正确答案写在横线上（1）three × five = ________（2）________ + four = eighteen（3）ten + ten = ________（4）six + seven = ________（5）ten - ________ = eight48.看图，读单词写数字例：cow 1（1）cat ________（2）pig ________（3）sheep ________（4）duck ________（5）bird ________五、匹配题（共2题；共10分）49.读一读，加一加，减一减。
【英语】数词专题(含答案)
【英语】数词专题(含答案)一、初中英语数词1．This cinema can offer seats to audience.A. thousandB. thousandsC. thousand ofD. thousands of【答案】 D【解析】【分析】句意：这家电影院能为观众提供数成千上万个座位。
表示确定数量要用thousand 的单数，不能与介词of 连用；表示不确定数量时，要用复数形式，同时要在其后加介词of，thousands of，后接可数名词复数。
【点评】考查数词thousand的用法。
注意表示确定数量与不确定数量的用法。
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．—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。
英语数词专题训练答案及解析
英语数词专题训练答案及解析 一、初中英语数词 1．Li Hua is going to be an elder brother. His parents are planning to have their ________child. A. first B. second C. one D. two 【答案】 B 【解析】【分析】句意：李华要当哥哥了，他的父母计划生二胎。A第一，B第二，C一，D二，限定词+序数词+名词，第几个......，选项C和D是基数词，故排除，根据 Li Hua is going to be an elder brother，可知是二胎，及第二个孩子，故选B。 【点评】考查数词，注意根据 Li Hua is going to be an elder brother的语境选择序数词的用法。
2．Did you know that the earth is home to ______ animals? A. million B. millions C. million of D. millions of 【答案】 D 【解析】【分析】句意： 你知道地球是几百万动物的家园吗？millions of，固定搭配，几百万的；数词+million，表示具体的……百万，此时million是单数形式；空前没有具体数词，因此用millions of，故选D。 【点评】考查数词，注意millions of的用法。
3．______ of the students in our school are boys. A. Two three B. Second three C. Two thirds D. 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。