内容正文:
译林7下unit1语法专练
基数词和序数词
第一部分:知识点梳理与使用方法
一、基数词
定义:表示数量的多少,回答“几个”的问题。
常见用法:
1. 说数量:I have two brothers.
2. 说年龄:She is ten years old.
3. 说电话号码、门牌号:My number is 138.
4. 说时间(几点钟):It’s three o’clock.
5. 表达年份:2024 is a special year.
数字写法规则:
· 1–12:one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve(单独记)
· 13–19:加 -teen,注意 thirteen(不是threeteen)、fifteen(不是fiveteen)、eighteen(一个t)
· 20–90 整十:加 -ty,注意 forty(没有u)
· 21–99:十位 + 连字符 + 个位,如 twenty-one
· 100以上:one hundred,hundred不加s
二、序数词
定义:表示顺序的先后,回答“第几个”的问题,前面通常加 the。
常见用法:
1. 说日期:July 4th(七月四日)
2. 说楼层:live on the second floor
3. 说生日:Today is my tenth birthday
4. 说名次:He came first in the race
5. 说第几课:Lesson Three 或 the third lesson
数字写法规则:
· 1–3:first, second, third(特殊记)
· 4–19:多数加 -th,注意 fifth、eighth(一个h)、ninth(去e)、twelfth(f代替ve)
· 20–90 整十:变 y 为 ie 再加 -th,如 twentieth
· 21以上:十位用基数 + 个位用序数,如 twenty-first
三、基数词与序数词的转换规律
一二三,特殊记(first, second, third)
八去t(eighth),九去e(ninth)
ve要用f替(five→fifth, twelve→twelfth)
整十变y为ie(twenty→twentieth)
其余直接加th
第二部分:综合练习题
一、写出下列数字的基数词
1. 9 → ______
2. 13 → ______
3. 15 → ______
4. 20 → ______
5. 46 → ______
6. 100 → ______
二、写出下列数字的序数词
1. 1 → ______
2. 3 → ______
3. 5 → ______
4. 8 → ______
5. 9 → ______
6. 12 → ______
7. 20 → ______
8. 33 → ______
9. 50 → ______
10. 100 → ______
三、用括号内单词的适当形式填空
1. There are ________ (twelve) months in a year.
2. Today is my ________ (twelve) birthday.
3. He lives on the ________ (nine) floor.
4. February is the ________ (two) month of the year.
5. She has ________ (one) brother and ________ (two) sisters.
6. Please turn to page ________ (thirty).
7. This is my ________ (one) time to visit Shanghai.
8. We have ________ (three) hundred students.
四、单项选择
1. There are _______ days in March.
A. thirty-one B. thirty-first C. the thirty-one
2. Tomorrow is his _______ birthday.
A. five B. fifth C. fiveth
3. Our school has _______ teachers.
A. two hundreds B. two hundred of C. two hundred
4. She lives on the _______ floor.
A. twenty B. twentieth C. twentyth
5. – Which class is she in?
– She is in _______.
A. Class five B. class Five C. Class Five
6. December is the _______ month of the year.
A. twelfth B. twelve C. twelveth
7. – How many books do you have?
– I have _______.
A. twenty-second B. twenty two C. twenty-two
8. He finished _______ in the running race.
A. first B. one C. the one
五、根据汉语提示完成句子
1. 我每天吃两个苹果。
I eat ________ ________ every day.
2. 他的生日在三月五日。
His birthday is on March ________.
3. 这是她第一次来北京。
This is her ________ ________ to Beijing.
4. 我们班有四十名学生。
There are ________ students in our class.
5. 请翻到第十五页。
Please turn to page ________.
第三部分:详细讲解与解析
一、答案速查
一、基数词
1. nine 2. thirteen 3. fifteen 4. twenty 5. forty-six 6. one hundred
二、序数词
1. first 2. third 3. fifth 4. eighth 5. ninth 6. twelfth 7. twentieth 8. thirty-third 9. fiftieth 10. one hundredth
三、填空
1. twelve 2. twelfth 3. ninth 4. second 5. one, two 6. thirty 7. first 8. three
四、选择
1. A 2. B 3. C 4. B 5. C 6. A 7. C 8. A
五、完成句子
1. two apples 2. the fifth / 5th 3. first time 4. forty 5. fifteen
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