2026年中考英语语法复习讲义： 数词（重难点、易错点+中考真题+强化训练）

该初中英语中考复习讲义聚焦数词专题，覆盖基数词、序数词的构成与用法，以及分数、倍数、年代等中考核心考点。资料以“定义-重点-难点-易错点-拓展-真题-强化”为架构，通过考点梳理、方法指导和真题训练，帮助学生系统突破数词用法难点。 亮点在于“分层突破+实战强化”策略，如针对hundred/thousand的单复数易错点，设计“前有数字不加s，后有of必加s”口诀教学，培养学生的思维品质和学习能力。内含重点、难点、易错点等分层练习及近3年中考真题，配合详细解析和即时反馈，确保学生高效掌握数词考点，教师可据此精准把控复习节奏，提升学生应考能力。

中考语法复习: 数词 (重难点、易错点+中考真题+强化训练) 一、数词的定义 数词(Numeral)是表示数量、顺序、时间、年龄、金额等概念的词类。 分类: 基数词(Cardinal Numerals) 和 序数词(Ordinal Numerals)。 基数词:表示 “数量多少”,如 one(一)、ten(十)、one hundred(一百)。 序数词:表示 “顺序先后”,如 first(第一)、tenth(第十)、hundredth(第一百)。 数词在句子中可作主语、宾语、定语、表语等成分,是日常表达和考试中的高频考点。 二、数词的重点知识 (一)基数词的核心考点 1. 基数词的构成 1-19:无规律,需单独记忆(one, two, ..., nineteen)。 20-90(整十数):词尾加 -ty(twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety)。 21-99(非整十数):整十数 + 连字符(-)+ 个位数(twenty-one, thirty-five, ninety-nine)。 100 及以上:100(one hundred),101-999(百位数字 + hundred + and + 十位 / 个位数字,如 one hundred and twenty-three);1000 及以上(thousand, million, billion,前加基数词,后接复数名词时需注意:前面有具体数字时,词尾不加 s,如 two thousand students;表示 “成千上万” 时,词尾加 s 并接 of,如 thousands of people)。 2. 基数词的常见用法 表示年龄:He is fifteen (years old). 表示时间:It’s nine thirty (9:30) / ten to five (4:50). 表示金额:This book costs twenty-five yuan. 表示数量:There are three hundred books in the library. (二)序数词的核心考点 1. 序数词的构成 1-3:特殊形式(first, second, third)。 4-19:基数词词尾加 -th(fourth, fifth, eighth, ninth, twelfth 为特殊变形)。 20 及以上:整十数词尾 -ty 变 -tie 加 -th(twentieth, thirtieth);非整十数:十位用基数词,个位用序数词(twenty-first, thirty-fifth)。 2. 序数词的常见用法 表示顺序时,前面通常加定冠词 the(The first lesson is easy.);若前面有形容词性物主代词(my, your, his 等),则不加 the(This is my third time to visit Beijing.)。 表示日期:June first (June 1st) / the twenty-fifth of December (December 25th)。 【重点知识针对性练习】(10 题) 1. There are _ days in a week. A. seven B. seventh C. the seven D. the seventh 2. My brother is _ years old. He will have his birthday party tomorrow. A. twelve B. twelfth C. the twelve D. the twelfth 3. The library has _ books. We can borrow any we like. A. two thousands B. two thousand C. thousand of D. thousands 4. — What time is it? — It’s _. A. forty past six B. six past forty C. twenty to seven D. seven to twenty 5. March is the _ month of a year. A. three B. third C. thirty D. thirtieth 6. There are _ students in our class: twenty boys and eighteen girls. A. thirty-eight B. thirty eight C. thirty-eighth D. the thirty-eighth 7. _ people came to watch the football match yesterday. A. Thousand of B. Thousands C. Thousands of D. Thousand 8. My father was born on October _ (12). We always celebrate his birthday on that day. A. twelve B. twelfth C. the twelve D. the twelfth 9. This building is _ meters high. It’s the tallest in our city. A. two hundred and fifty B. two hundreds and fifty C. two hundred fifty D. two hundreds fifty 10. — How many lessons do you have in the morning? — _. A. Four B. Fourth C. The four D. The fourth 三、数词的难点知识 (一)分数、小数、百分数的表达 1. 分数:分子用基数词,分母用序数词;分子大于 1 时,分母加 s。 0. 1/2:one half / a half;1/3:one third;2/3:two thirds;1/4:one fourth / a quarter;3/4:three fourths / three quarters。 0. 带分数:整数部分 + and + 分数(two and three fifths 2 又 3/5)。 1. 小数:小数点用 point,整数部分按基数词读,小数部分按单个数字读。 0. 0.5:zero point five;1.25:one point two five;10.308:ten point three zero eight。 2. 百分数:基数词 + percent(无复数形式)。 0. 5%:five percent;20%:twenty percent;100%:one hundred percent。 (二)“倍数” 的表达 1. A + be + 倍数 + as + 形容词原级 + as + B(A 是 B 的几倍): This room is three times as big as that one. 2. A + be + 倍数 + 形容词比较级 + than + B(A 比 B 大 / 多几倍): This room is two times bigger than that one.(注意:此处 “two times bigger” 表示 “是…… 的三倍大”) 3. A + be + 倍数 + the + 名词(size/length/width 等)+ of + B(A 的尺寸 / 长度 / 宽度是 B 的几倍): This room is three times the size of that one. (三)“年代” 和 “世纪” 的表达 1. 年代:in the + 逢十的基数词复数(表示 “在…… 世纪…… 年代”)。 0. 20 世纪 90 年代:in the 1990s /in the 1990’s(读作 “in the nineteen nineties”)。 2. 世纪:序数词 + century(表示 “…… 世纪”),注意:数字需加 1。 0. 21 世纪:the 21st century(读作 “the twenty-first century”);19 世纪:the 19th century(读作 “the nineteenth century”)。 【难点知识针对性练习】(10 题) 1. About _ of the students in our class are girls. A. two third B. two thirds C. second third D. second thirds 2. The price of this computer is _ that of the old one. It’s too expensive. A. three times as high as B. three time as high as C. three times high than D. three time higher than 3. — What’s 3.14 in English? — It’s _. A. three point fourteen B. three points one four C. three point one four D. three points fourteen 4. More than _ of the earth’s surface is covered with water. A. seventy percent B. seventy percents C. seventieth percent D. seventieth percents 5. He spent _ of his money buying books. Now he has little left. A. three quarter B. three quarters C. third quarter D. third quarters 6. Our school was founded in _ (20 世纪 50 年代). A. the 1950 B. the 1950s C. 1950s D. 1950’s 7. This bridge is _ longer than that one. So it takes more time to build. A. two time B. two times C. second time D. second times 8. The new playground is _ the old one. All students like it. A. twice the size of B. twice size of C. two time the size of D. two times size of 9. — What’s the fraction “5/8” in English? — It’s _. A. five eight B. five eighths C. fifth eight D. fifth eighths 10. _ is a very important period in the history of science. A. The 18th century B. 18th century C. The 18 century D. 18 century 四、数词的易错点 (一)序数词前定冠词 the 的省略与保留 易错点:当序数词前有形容词性物主代词(my, your, his 等)、名词所有格(Tom’s, Lucy’s 等)时,不加 the;单独表示顺序时,必须加 the。 错误:This is my the first English book. 正确:This is my first English book. / The first book is mine. (二)hundred, thousand, million 的单复数混淆 易错点:前面有具体数字时,hundred/thousand/million 用单数,且不加 of;表示 “不确定的数量”(成千上万、数百万)时,用复数,且接 of。 口诀: 前有数字,不加s; 后有of, 必加s。 错误:There are two thousands students in the school. / Thousands people came to the party. 正确:There are two thousand students in the school. / Thousands of people came to the party. (三)“几十” 与 “几十几” 的拼写错误 易错点:整十数词尾为 -ty(twenty, thirty),而非 -teen(thirteen, fourteen);非整十数需加连字符(-)。 错误:thirty five(35)、fourty(40)、ninteen(19) 正确:thirty-five(35)、forty(40)、nineteen(19) (四)分数中 “1/2”“1/4” 的特殊表达 易错点:1/2 不能说 one second,需说 one half 或 a half;1/4 可表示为 one fourth 或 a quarter,避免混淆。 错误:one second of the apple is eaten. 正确:a half of the apple is eaten. 【易错点针对性练习】(10 题) 1. This is _ first time to visit Shanghai. I’m very excited. A. my B. my the C. the my D. a 2. _ trees have been planted in our school in the past five years. A. Five hundred B. Five hundreds C. Five hundred of D. Five hundreds of 3. — Which floor do you live on? — I live on _ floor. A. the twelve B. twelve C. the twelfth D. twelfth 4. My mother bought _ eggs yesterday. They are enough for a week. A. three dozen B. three dozens C. three dozen of D. three dozens of 5. He made a mistake in the _ question of the exam. It’s a pity. A. five B. fifth C. the five D. the fifth 6. _ people lost their homes in the flood. The government tried to help them. A. Million of B. Millions C. Millions of D. Million 7. — How old is your sister? — She is _ years old. Today is her birthday. A. eighteen B. eighteenth C. the eighteen D. the eighteenth 8. This is _ book I’ve ever read. I like it best. A. the three B. three C. the third D. third 9. There are _ students in the hall. They are waiting for the performance. A. two thousand B. two thousands C. two thousand of D. two thousands of 10. — When is your birthday? — It’s on _ of October. A. the ten B. ten C. the tenth D. tenth 五、数词的特殊场景用法拓展 (一)编号的表达 1. 事物编号:可用 “基数词 + 名词”(名词首字母大写)或 “the + 序数词 + 名词”。 1 第一课:Lesson 1 /the first lesson 2 302 房间:Room 302 /the three hundred and second room 3 第五页:Page 5 /the fifth page 2. 公共设施编号:直接用基数词(常大写)。 1 3 路公交车:Bus No. 3(No. 为 Number 的缩写,可省略) 2 8 号桌:Table 8 3 201 教室:Classroom 201 (二)倍数比较的特殊句式 1. “A + 倍数 + more + 名词 + than + B”(A 比 B 多…… 倍的某物): He has three times more books than I do.(他的书比我的多三倍。) 2. “A + 倍数 + as many/much + 名词 + as + B”(A 的某物是 B 的…… 倍): This box has twice as many apples as that one.(这个盒子里的苹果是那个的两倍。) (三)“半” 的表达 1. 表示 “一半”:half(前不加冠词,后接名词时可加 of,也可省略)。 half (of) the apple(半个苹果)、half (of) the students(一半学生) 2. 表示 “一个半”:one and a half + 复数名词 /a half and one + 复数名词。 one and a half hours = a half and one hours(一个半小时) 【拓展练习】(10 题,针对特殊场景用法) 1. We will have a test in _ tomorrow. Please prepare well. A. Lesson 5 B. 5 Lesson C. the Lesson 5 D. Lesson the 5 2. You can take _ to get to the city center. It’s fast and cheap. A. the Bus 10 B. Bus 10 C. 10 Bus D. Bus the 10 3. He spent _ finishing his homework yesterday evening. A. one and a half hour B. one and a half hours C. a half and one hour D. a half and one hours 4. This supermarket has _ than that one. So more people like to go there. A. twice more vegetables B. twice vegetables more C. two times vegetables more D. two times more vegetable 5. _ of the students in our class are interested in English. They often practice speaking. A. Half B. The half C. A half D. Half of 6. — Where is our teacher’s office? — It’s in _. A. 203 Room B. Room 203 C. the Room 203 D. Room the 203 7. There are _ in the basket. They are fresh and sweet. A. twice as many oranges as apples B. twice as many orange as apple C. two time as many oranges as apples D. two time as many orange as apple 8. I read _ last night. It’s very interesting. A. Page 15 B. 15 Page C. the Page 1 D. Page the 15 9. _ is enough for us to finish the work. Don’t worry. A. One and a half day B. One and a half days C. A half and one day D. A half and one days 10. This factory produces _ as that one every month. A. three times more cars B. three times cars more C. three time more cars D. three time cars more 六、数词真题训练(8 题) 1.(2024・北京)We will have a school trip on _ (五月一日). All students need to meet at the school gate at 7:30 a.m. A. May 1st B. May 1 C. 1st May D. the 1st May 2.(2024・江苏苏州)— How many volunteers are there in your club? — About _. And half of them are girls. A. two hundreds B. two hundred C. hundreds D. hundred of 3.(2023・广东广州)The new cinema is _ as big as the old one. It can hold more people. A. twice B. two time C. second D. the second 4.(2023・浙江杭州)About _ of the students in this class like playing basketball after school. A. three fifth B. three fifths C. third fifth D. third fifths 5.(2022・山东济南)— What time does the train leave? — It leaves at _ (8:45). You’d better hurry up. A. a quarter past eight B. a quarter to nine C. forty-five past eight D. forty-five to nine 6.(2022・湖北武汉)This is my _ time to visit Wuhan. I came here in 2019 and 2021 before. A. three B. third C. the three D. the third 7.(2021・四川成都)In _, many people began to use the Internet to study and work at home. A. 2020s B. the 2020 C. the 2020s D. 2020’s 8.(2021・陕西西安)The price of the new phone is _ than that of the old one. But it’s more popular. A. twice higher B. two times high C. twice high D. two times higher 七、数词强化训练(15 题,综合所有知识点) 1. There are _ months in a year. December is the _ month. A. twelve; twelve B. twelve; twelfth C. twelfth; twelve D. twelfth; twelfth 2. — How much is this T-shirt? — It’s _. A. twenty yuan and fifty fen B. twenty yuan fifty fen C. twenty yuans and fifty fens D. twenty yuans fifty fens 3._ people took part in the marathon (马拉松) last year. It was a big success. A. Thousands B. Thousands of C. Thousand D. Thousand of 4. The meeting will start at _ (9:15). Please arrive on time. A. a quarter past nine B. a quarter to nine C. fifteen past nine D. both A and C 5. This river is _ the one in my hometown. It’s much wider. A. three times as long as B. three time as long as C. three times long than D. three time longer than 6. About _ of the earth’s fresh water is stored in glaciers (冰川). A. two third B. two thirds C. second third D. second thirds 7. Our school was built in _ (20 世纪 80 年代). It has a history of over 40 years. A. the 1980 B. 1980s C. the 1980s D. 1980’s 8. — Which lesson are you learning now? — We are learning the _ lesson. It’s about environmental protection. A. twelve B. twelfth C. the twelve D. the twelfth 9. There are _ students in the school. Among them, _ are from the countryside. A. two thousand; three hundred B. two thousands; three hundreds C. two thousand; three hundreds D. two thousands; three hundred 10. This is _ time I’ve seen such a beautiful sunset. I’ll take a photo. A. my three B. my third C. the my third D. three my 11. The price of the house is _ than that of last year. Many people can’t afford it. A. twice higher B. two times high C. twice high D. two times higher 12. — How old is your grandfather? — He is _ years old. He still works on the farm every day. A. eighty B. eightieth C. the eighty D. the eightieth 13. _ of the students in our class have read this book. It’s very popular. A. Eighty percent B. Eighty percents C. Eightieth percent D. Eightieth percents 14. The new library is _ the old one. It can hold 2,000 people at the same time. A. twice the size of B. twice size of C. two time the size of D. two times size of 15. — When is National Day in China? — It’s on _. A. October 1 B. October 1st C. the 1st October D. both B and C 八、所有练习答案及解析 【重点知识针对性练习】 1. 答案:A 解析:表示 “一周有七天”,强调数量,用基数词 seven;基数词前不加 the,故选 A。 2. 答案:A 解析:表示 “年龄” 用基数词,“十二岁” 是 twelve years old,基数词前不加 the,故选 A。 3. 答案:B 解析:hundred 前有具体数字 two 时,用单数形式,且不加 of;thousands of 表示 “成千上万”,需加 of,此处有具体数字 two,故选 B。 4. 答案:C 解析:时间表达中,“分钟数超过 30” 时,用 “60 - 分钟数 + to + 下一小时”;40 分钟超过 30,60 - 40 = 20,即 twenty to seven(6:40),A、B、D 表达错误,故选 C。 5. 答案:B 解析:表示 “三月是一年中的第三个月”,强调顺序,用序数词 third;序数词前加 the,故选 B。 6. 答案:A 解析:20 名男生 + 18 名女生 = 38 名学生,强调数量,用基数词 thirty-eight(非整十数需加连字符),故选 A。 7. 答案:C 解析:表示 “不确定的数量”(成千上万的人),用 thousands of,故选 C。 8. 答案:B 解析:表示 “日期” 用序数词,October twelfth(10 月 12 日);序数词前有月份名词修饰时,不加 the,故选 B。 9. 答案:A 解析:“250 米” 的正确表达是 two hundred and fifty meters;hundred 前有具体数字时用单数,百位和十位之间加 and,故选 A。 10. 答案:A 解析:回答 “上午有几节课”,强调数量,用基数词 Four;基数词单独作表语时不加 the,故选 A。 【难点知识针对性练习】 1. 答案:B 解析:分数表达中,分子用基数词 two,分母用序数词 third;分子大于 1 时,分母加 s,即 two thirds,故选 B。 2. 答案:A 解析:倍数表达 “A 是 B 的三倍高” 用 “three times as high as”;time 表示 “倍数” 时,复数为 times,且 as...as 中间用形容词原级,故选 A。 3. 答案:C 解析:小数 3.14 读作 “three point one four”;小数点用 point,小数部分按单个数字读,point 为单数,故选 C。 4. 答案:A 解析:百分数表达为 “基数词 + percent”,percent 无复数形式;“70%” 是 seventy percent,故选 A。 5. 答案:B 解析:“3/4” 的正确表达是 three quarters(也可表示为 three fourths),分子大于 1 时,分母序数词加 s,故选 B。 6. 答案:B 解析:“20 世纪 50 年代” 表示为 in the 1950s /in the 1950’s,需加定冠词 the,且基数词后加 s,故选 B。 7. 答案:B 解析:“两倍长” 用 two times longer;time 表示 “倍数” 时,复数为 times,故选 B。 8. 答案:A 解析:倍数表达 “A 的尺寸是 B 的两倍” 用 “twice the size of”;twice 表示 “两倍”,且 the size of 为固定搭配,故选 A。 9. 答案:B 解析:分数 “5/8” 中,分子用基数词 five,分母用序数词 eighth;分子大于 1 时,分母加 s,即 five eighths,故选 B。 10. 答案:A 解析:“18 世纪” 表示为 the 18th century;世纪前加定冠词 the,且用序数词 18th(eighteenth),故选 A。 【易错点针对性练习】 1. 答案:A 2. 解析:序数词 first 前有形容词性物主代词 my 时,不加 the,即 my first time,故选 A。 3. 答案:A 4. 解析:hundred 前有具体数字 five 时,用单数形式,且不加 of,即 five hundred trees,故选 A。 5. 答案:C 6. 解析:表示 “第十二楼” 用序数词 twelfth,序数词前加 the,即 the twelfth floor,故选 C。 7. 答案:A 8. 解析:dozen(打,12 个)前有具体数字 three 时,用单数形式,且不加 of,即 three dozen eggs,故选 A。 9. 答案:B 10. 解析:表示 “第五道题” 用序数词 fifth,序数词前有定冠词 the 修饰名词 question,即 the fifth question,故选 B。 11. 答案:C 12. 解析:表示 “数百万的人” 用 millions of,million 前无具体数字时,用复数且加 of,故选 C。 13. 答案:A 14. 解析:表示 “十八岁” 用基数词 eighteen,基数词前不加 the,即 eighteen years old,故选 A。 15. 答案:C 16. 解析:表示 “第三本书” 用序数词 third,序数词前加 the,即 the third book,故选 C。 17. 答案:A 18. 解析:thousand 前有具体数字 two 时,用单数形式,且不加 of,即 two thousand students,故选 A。 19. 答案:C 20. 解析:表示 “十月十日” 用序数词 tenth,序数词前加 the,即 the tenth of October,故选 C。 【数词的特殊场景用法拓展】 1. 答案:A 解析:编号表达 “第五课” 用 “Lesson + 基数词”(Lesson 5)或 “the + 序数词 + lesson”(the fifth lesson),只有 A 符合规范,故选 A。 2. 答案:B 解析:公交车编号表达为 “Bus + 基数词”(Bus 10),不加定冠词 the,故选 B。 3. 答案:B 解析:“一个半小时” 的正确表达是 one and a half hours(half 前有 one,名词用复数),a half and one hours 虽语法正确,但日常更常用 one and a half hours,故选 B。 4. 答案:A 解析:“A 比 B 多两倍蔬菜” 用 “twice more vegetables than B”;vegetable 为可数名词,需用复数,倍数词放在 more 前,故选 A。 5. 答案:A 解析:“一半学生” 表示为 half the students 或 half of the students;空格后有 of,若选 D 需改为 Half of the students,此处 A 符合 “half + 名词” 的用法,故选 A。 6. 答案:B 解析:房间编号表达为 “Room + 基数词”(Room 203),不加定冠词 the,故选 B。 7. 答案:A 解析:“橘子是苹果的两倍多” 用 “twice as many oranges as apples”;oranges 和 apples 均为可数名词复数,倍数词 twice 后接 as many + 复数名词 + as,故选 A。 8. 答案:A 解析:页码表达为 “Page + 基数词”(Page 15)或 “the + 序数词 + page”(the fifteenth page),只有 A 符合规范,故选 A。 9. 答案:B 解析:“一天半” 的正确表达是 one and a half days(名词用复数),故选 B。 10. 答案:A 解析:“这家工厂每月生产的汽车比那家多三倍” 用 “three times more cars as that one”;car 为可数名词复数,倍数词 three times 放在 more 前,故选 A。 【数词真题训练】 1. 答案:A 解析:英文日期表达 “五月一日” 常用 “月份 + 序数词”(May 1st)或 “the + 序数词 + of + 月份”(the 1st of May);选项中只有 May 1st 符合规范,故选 A。 2. 答案:B 解析:hundred 前有具体数字 about two 时,用单数形式,且不加 of,即 two hundred,故选 B。 3. 答案:A 解析:倍数表达 “新电影院是旧电影院的两倍大” 用 twice as big as;twice 表示 “两倍”,符合语境,故选 A。 4. 答案:B 解析:分数 “3/5” 中,分子用基数词 three,分母用序数词 fifth,分子大于 1 时分母加 s,即 three fifths,故选 B。 5. 答案:B 解析:8:45 表示为 “a quarter to nine”(差 15 分钟到 9 点);分钟数超过 30 时,用 “60 - 分钟数 + to + 下一小时”,45 分钟超过 30,60 - 45 = 15,即 a quarter to nine,故选 B。 6. 答案:B 解析:表示 “第三次参观武汉” 用序数词 third,序数词前有形容词性物主代词 my 时,不加 the,即 my third time,故选 B。 7. 答案:C 解析:“2020 年代” 表示为 in the 2020s,需加定冠词 the,且基数词后加 s,故选 C。 8. 答案:D 解析:倍数表达 “新手机价格是旧手机的两倍多” 用 “two times higher than”;time 表示 “倍数” 时用复数 times,且比较级后接 than,故选 D。 【数词强化训练】 1. 答案:B 解析:第一空表示 “一年有十二个月”,用基数词 twelve;第二空表示 “十二月是第十二个月”,用序数词 twelfth,故选 B。 2. 答案:B 解析:英文中 “金额” 表达 “20 元 5 角” 为 twenty yuan fifty fen;yuan 和 fen 为中文货币单位,无复数形式,且不用 and 连接,故选 B。 3. 答案:B 解析:表示 “成千上万的人” 用 thousands of,million/hundred/thousand 前无具体数字时,用复数且加 of,故选 B。 4. 答案:D 解析:9:15 可表示为 “a quarter past nine”(十五分钟过九点)或 “fifteen past nine”,两者均正确,故选 D。 5. 答案:A 解析:倍数表达 “这条河是家乡那条河的三倍长” 用 “three times as long as”;time 表示 “倍数” 时用复数 times,as...as 中间用形容词原级,故选 A。 6. 答案:B 解析:分数 “2/3” 中,分子用基数词 two,分母用序数词 third,分子大于 1 时分母加 s,即 two thirds,故选 B。 7. 答案:C 解析:“20 世纪 80 年代” 表示为 in the 1980s,需加定冠词 the,且基数词后加 s,故选 C。 8. 答案:B 解析:表示 “第十二课” 用序数词 twelfth,序数词前有定冠词 the 修饰名词 lesson,即 the twelfth lesson,故选 B。 9. 答案:A 解析:hundred/thousand 前有具体数字 two/three 时,用单数形式,且不加 of,即 two thousand 和 three hundred,故选 A。 10. 答案:B 解析:序数词 third 前有形容词性物主代词 my 时,不加 the,即 my third time,故选 B。 11. 答案:D 解析:倍数表达 “房价是去年的两倍高” 用 “two times higher than”;time 表示 “倍数” 时用复数 times,比较级后接 than,故选 D。 12. 答案:A 解析:表示 “八十岁” 用基数词 eighty,基数词前不加 the,即 eighty years old,故选 A。 13. 答案:A 解析:百分数 “80%” 表达为 eighty percent,percent 无复数形式,故选 A。 14. 答案:A 解析:倍数表达 “新图书馆是旧图书馆的两倍大” 用 “twice the size of”;twice 表示 “两倍”,the size of 为固定搭配,故选 A。 15. 答案:D 解析:中国国庆节是 10 月 1 日,英文日期可表示为 “October 1st” 或 “the 1st October”,两者均正确,故选 D。 学科网(北京)股份有限公司 $