2024年人教版中考英语基数词详解以及练习
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中考英语基数词详解以及练习
1)中考英语基数词详解
基数词是用来表示数目或者数量的词,没有限定顺序。
从1到100的基数词都有固定的表达形式,其中1~12的基数词较为特殊,需要逐个记忆,如one(1)、two(2)、three(3)等。
而13~19的基数词,除了thirteen(13)、fifteen(15)、eighteen(18)外,其余均在十位基数词后加-teen构成,如fourteen(14)、sixteen(16)等。
对于20~90的整十位数,它们都以-ty结尾,例如twenty(20)、thirty (30)、forty(40)等。
在构成21~99的基数词时,先说“几十”,再说“几”,中间加连字符“-”。
例如,twenty-one(21)、thirty-four(34)、seventy-six(76)等。
基数词在句子中有多种用法。
它可以表示确切的年龄,如“The little girl is six years old.”(这个小女孩六岁了。
)也可以用来表示时间的具体分钟数,如“I'll meet you at ten minutes past eight.”(我将在八点十分和你见面。
)此外,基数词还可以用来描述数量、价格等,如“I have three apples.”(我有三个苹果。
)或“The price of the book is fifty dollars.”(这本书的价格是五十美元。
)
另外,基数词在表达倍数、算式等方面也有特定的用法,比如“twice three is six.”(二乘以三等于六。
)或者“five plus five equals ten.”(五加五等于十。
)
例句:
表示数量:
I have seven books on my desk.(我桌上有七本书。
)
They planted two hundred trees last year.(他们去年种了两百棵树。
)表示年龄:
My grandfather is in his eighties.(我祖父八十多岁了。
)
She is a girl of fifteen.(她是一个十五岁的女孩。
)
表示时间:
The movie starts at ten o'clock.(电影十点钟开始。
)
I usually wake up at six in the morning.(我通常早上六点起床。
)
表示价格:
The price of this computer is three thousand dollars.(这台电脑的价格是三千美元。
)
The shirt costs only twenty yuan.(这件衬衫只卖二十元。
)
表示重量、长度等度量衡:
The weight of this box is about five kilograms.(这个箱子的重量大约是五公斤。
)
The river is about two hundred meters long.(这条河大约有两百米长。
)用于数学运算:
Five plus three equals eight.(五加三等于八。
)
Twelve divided by four is three.(十二除以四等于三。
)
2)练习
一、单选题
1.There are _______ students in our class.
A. fifty-two
B. fifty-two’s
C. fifty and two
D. fifty-twos
2.The book costs me _______ yuan.
A. thirty-five
B. thirty and five
C. thirty five
D. thirty-fifths
3.My birthday is on the _______ of August.
A. seven
B. seventh
C. seventeen
D. seventeenth
4.I usually sleep for _______ hours every night.
A. seven
B. seventh
C. the seven
D. the seventh
5.My father is _______ years old this year.
A. forty-five
B. forty-fifths
C. fifteenth
D. fifteenths
6.How many _______ are there in your family?
A. people
B. peoples
C. woman
D. mans
7.The price of this computer is about _______ yuan.
A. three thousands
B. three thousand
C. three thousands of
D. three thousand of
二、填空题
1.There are _______ (三十) students in our group.
2.My little sister is only _______ (四) years old.
3.The price of the new phone is _______ (九十) dollars.
4.The _______ (第一) day of the week is Monday.
5.My brother is in the _______ (八) grade.
三、翻译题
1.这个房间有二十平方米。
(This room is twenty square meters.)
2.图书馆里有超过一万本书。
(There are over ten thousand books in the library.)
3.她每天早上六点起床。
(She gets up at six o'clock every morning.)
4.这个苹果重三公斤。
(This apple weighs three kilograms.)
5.我们班有四十五个学生。
(There are forty-five students in our class.)
四.改错题
1.He is the fourteen years old. (改为正确的表达)
2.She has two hundred and fifty-fours books. (改为正确的表达)
3.They live in the five floor. (改为正确的表达)。