内容正文:
数 词
考点精练1
( A )1. It’s my daughter’s birthday today. She’s years old.
A. eighteen B. eighteenth
C. the eighteen
( B )2.— What’s twenty and fifty?
— It’s .
A. fifty B. seventy C. eighty
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B
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( B )3. — Look! people are queuing patiently.
— Yes. Rules make everything go smoothly.
A. Hundred B. Hundreds of
C. Hundreds
( B )4.There are twelve boys and thirteen girls in Class Four, which means students in total.
A. 33 B. 25 C. 13
B
B
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考点精讲1 基数词
表示事物数量多少的数词。
主要用法如下:
1. 日期:年用基数词,日用序数词。如:Oct.1st, 2022
2. 时刻: 8 o’clock; eleven past seven
3. 顺序和编号: Room 201
4. 年代、年龄: in the 1900s; 30 years old
5. hundred, thousand, million, billion的用法:具体数字+ hundred/thousand/million/billion;undreds/thousands/millions/billions of
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考点精练2
( C )5. China’s National Day comes in October, the month of a year.
A. eighth B. ninth C. tenth
( C )6. Please pass me book on the right.
A. four B. fourth C. the fourth
( B )7. The best time to plant a tree was ten years ago, and the best time is now.
A. first B. second C. last
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B
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( C )8. (2022·铜仁改编)— I have been to Mount Fanjing three times. What about you?
— I have been there three times, too. And I would like to visit it a time.
A. three B. third C. fourth
C
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( C )9. — It is Mom’s birthday next Wednesday. What should we do?
— What about buying her flowers to show our love?
A. forty; forty B. forty; fortieth
C. fortieth; forty
C
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考点精讲2 序数词
表示顺序的数词叫序数词。
序数词的构成:
1. 1~3: one→first; two→second; three→third
2. 4~19:除第5、第8、第9和第12外,其余序数词均由基数词加-th。如: four→fourth; five→fifth; eight→eighth; nine→ninth; twelve→twelfth
3. 20~90之间的整十:基数词词尾y变为i,再加-eth。如: twenty→twentieth
4. 21~99之间的“第几十几”:只将个位数变为序数词。如: ninety-one→ninety-first
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[注意] 1. 序数词前要加定冠词the,但若序数词前有形容词性物主代词或名词所有格时则省略the。如:
This is my f