2023年中考英语二轮复习专项讲义——数词一、基数词：表示数目的词叫基数词。
（一）基数词的表示方法1、最基本的基数词: 见书中表格2、hundred, thousand, million, billion, dozen, score 这些词前面如果有表示具体数字的词，它们末尾不能加“s”且不能与of连用；反之则末尾需加“s”，与of连用。
three hundred people; thousands of people; three thousand of the people（二）基数词的用法1、用基数词表示编号。
Today we are going to study Lesson Five. 今天我们要学习第五课。
He lives in Room 801. 他住在801房间。
2、表示大几倍或者小多少用基数词。
This room is three times bigger than that one. 这个房间比那个房间大三倍。
3、“数词+名词（+形容词）”构成复合形容词作定语，其中名词用单数形式，数词与名词及形容词之间用连字符“-”。
A twenty-one-year-old girl is behind me. 一位21岁的女孩在我身后。
4、两组与数词有关的介词短语：（1）in+定冠词the+整十基数词的复数形式，表示年代。
In the 1870s在19世纪70年代（2）in+物主代词+整十基数词的复数形式，表示某人的大约年龄。
in one’s thirties在某人30多岁的时候有时在物主代词后面可加上形容词early或late使其含义更确切一些。
The young man is in his early thirties. 这个年轻人刚30岁出头。
注意：“十几岁”要用in one’s teens; 二、序数词：表示数目顺序的词叫序数词。
（一）序数词的构成：写法口诀：1.2.3特殊记，th从4加起，两个ve ，f替，8去t 9去e，ty变成tie，后加th莫迟疑，若是几十几，只变个位就可以。
8---eighth; 9---ninth; 12---twenfth; 20---twentieth; 40---fortieth; 90---ninetieth; 99---ninety-ninth; （二）序数词的用法1、序数词主要作定语、表语，前面要加定冠词the。
The fifth lesson is very easy to learn. 第五课很好学。
You are the first one I believe. 你是我最相信的人。
注意：1. 序数词和定冠词连用表示顺序；和不定冠词连用，表示“又一，再一”，和零冠词连用时，表示名次，起副词的作用。
Our classroom is on the second floor of Building 2. 我们的教室在2号楼的2楼。
He failed twice, but he tried it a third time.他失败了两次，但又尝试了一次。
Lily came second in the race. 莉莉在比赛中得了第二名。
2、表示分数词时，分子用基数词，分母用序数词；若分子大于1，表示分母的序数词要用复数形式。
Two fifths of the books are mine. 五分之二的书是我的。
3、数词前加every, 表达“每一段时间或每隔一段……”。
每隔10天/每隔8天every ten days / every ninth day;每隔4周/每隔2周every four weeks / every third week强化训练：一、单项选择1( )1. The newly-built bridge is about ______ wide.A. fifteen metresB. fifteen metres'C. fifteen-metreD. fifteen metre( )2. _______ people gathered in front of the hall, waiting for the president to meet them.A. Several hundredB. Severals of hundredC. Several hundred ofD. Several hundreds of ( )3. Now, everybody, please turn to Page ____ and look at the ____ picture.A. Fifth; fiveB. Five; fifthC. Fifth; fifthD. Five; five( )4. ---Excuse me, sir. Here’s a package for Lin Tao. Which room does he live in? ---______.A. 308 RoomB. Room 308C. The Room 308D. The 308 Room( )5. We have two ears and one mouth so that we can listen ____ we speak.A. as twice much asB. twice as much asC. as much as twiceD. as much twice as ( )6. To finish the task, we’ve tried three times, and after dinner we’ll try ______ time.A. the fourthB. a fourthC. fourthD. four( )7. Tom will sell ________ stamps to help the poor children in the west of China.A. thousand ofB. two thousand ofC. two thousandD. two thousands( )8. About _______ of the clerks in this office are under the age of 40.A. three-fifthsB. third fifthsC. third-fiveD. three five( )9. Tom is reading ___________ composition. It was all written by himself.A. a 80---wordsB. an 80---wordsC. an 80—wordD. a 80—word( )10. Many middle-aged people begin to have health problems________.A. on their fortiesB. in their fortiesC. at fortiethD. on fortieth( )11. The Sun family had a ________ visit to Canada last month.A. ten daysB. ten dayC. ten-daysD. ten-day( )12. About _______ of the clerks in this office are under the age of 40.A. three-fifthsB. third fifthsC. third-fiveD. three five( )13. _________of the students in that class usually have lunch at school.A. The fourteenB. The fourteenthC. FourteenthD. Fourteen( )14. Tom is reading ___________ composition. It was all written by himself.A. a 80---wordsB. an 80---wordsC. an 80—wordD. a 80—word( )15. More than ________people in Japan died in the earthquake in March,2011.A. ten thousandsB. ten thousandC. ten thousands ofD. ten thousand of( )16. Many middle-aged people begin to have health problems________.A. on their fortiesB. in their fortiesC. at fortiethD. on fortieth( )17. The newly-built bridge is about ______ wide.A. fifteen metresB. fifteen metres'C. fifteen-metreD. fifteen metre( )18. The classroom building in our school is about____________.A. 20-metre highB. 20 metres highC. 20 metre highD. 20-metres high( )19. Listen, everybody! Pansy’s ______ girl is singing a pop song now.A. eight year oldB. eight-year-oldC. eight-years-oldD. eight years old( )20. _______ people gathered in front of the hall, waiting for the president to meet them.A. Several hundredB. Severals of hundredC. Several hundred ofD. Several hundreds of( )21. --Jack, I want to go to __ to see a dentist. Could you tell me the address? --No problem.2A. Room 606B. No.2 HospitalC. Fifth Avenue( )22. Christmas Day is one ______ of December.A. twenty-fiveB. the twenty-fiveC. twenty-fifthD. the twenty-fifth ( )23. Please turn to Page ______ and read the ______ story.A. Ten; twoB. Ten; secondC. Tenth; secondD. Tenth; two( )24. In this exam, you’re asked to write a composition of about ______.A. 90-wordsB. 90-wordC. 90 wordsD. 90 word’s( )25. It is reported that people throw _ plastic bags along this street every day.A. hundredB. hundredsC. hundred ofD. hundreds of( )26. Now, everybody, please turn to Page ____ and look at the ____ picture.A. Fifth; fiveB. Five; fifthC. Fifth; fifthD. Five; five( )27. ---Excuse me, sir. Here’s a package for Lin Tao. Which room does he live in?---______.A. 308 RoomB. Room 308C. The Room 308D. The 308 Room( )28. We have two ears and one mouth so that we can listen ____ we speak.A. as twice much asB. twice as much asC. as much as twiceD. as much twice as( )29. To finish the task, we’ve tried three times, and after dinner we’ll try ______ time.A. the fourthB. a fourthC. fourthD. four( )30. Tom will sell ________ stamps to help the poor children in the west of China.A. thousand ofB. two thousand ofC. two thousandD. two thousands二、选用适当的词填空1. Grandma was still working for charity organizations in her __________.(70)2. There are already eleven in the list. You are the __________. (12)3. Alice doesn’t want to see the film again because she has seen it ________. (two)4. The T V news reported the celebration of the old man’s __________ birthday.(hundred)5. As we all know, most students of the _________ grade seldom communicate with their parents. (nine)3。
