内容正文:
语法六 数词
第2部分 语法专题探究
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语法六 数词
考点精讲
试题精练
语法六 数词
考点精讲
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1. 基数词
(1)基数词的读法(主要在听力中考查)
基数词的读法 在读“十几”和“几十”时注意区分-teen和-ty。
在读三位数或三位数以上的基数词时,需在十位数之前(若十位数是“0”,则在个位数前)加连词and。120读作one hundred and twenty;408读作four hundred and eight;1,265读作one thousand two hundred and sixty-five。
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语法六 数词
基数词的读法 阿拉伯数字每三位数用逗号隔开(从后往前数),所用英语单词为:thousand(千),million(百万),billion(十亿)。10,000读作ten thousand;73,192读作seventy-three thousand one hundred and ninety-two。
百分数:先读基数词,再读百分号。6%读作six percent;35%读作thirty-five percent。
小数:小数点前面按照基数词读,小数点后逐个数字读。82.47读作eighty-two point four seven。
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语法六 数词
(2)基数词的用法
表示确数 ●基数词+可数名词单数/复数。one apple一个苹果;two books 两本书
●基数词+hundred, thousand, million等词的单数形式(+可数名词复数)。five hundred students 500名学生
表示概数 hundred, thousand, million等词的复数形式+of+可数名词复数。hundreds of 几百,成百上千
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语法六 数词
表示时刻 ●整点:一般用“基数词+o’clock”。He eats breakfast at seven o’clock. 他七点吃早餐。(RJ七下U2)
●非整点:★可用顺读法。7:05读作seven five;7:30读作seven thirty。
★可用倒读法。分钟数≤30分钟,用“分钟数+past+小时”,表示“几点过几分”。7:15读作a quarter past seven;7:30读作half ①__________ seven。分钟数>30分钟,用“(与下一小时相差的)分钟数+to+(下一)小时”,表示“差几分到几点”。7:50读作
②____ ___ ______。
past
ten to eight
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语法六 数词
表示年龄 ●“基数词+year/years old”,表示“……岁”。My sister is thirteen years old. 我的妹妹13岁了。
●“at (the age of)+基数词”,表示“在……岁时”。at (the age of) thirteen 在13岁时
●“基数词-year-old”(作定语)。That thirteen-year-old girl is my sister. 那个13岁的女孩是我的妹妹。
●“in+one’s+整十的基数词的复数形式”,表示“在某人几十多岁时”。in her ③____________ 在她20多岁时
twenties
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语法六 数词
表示年份
和年代 ●“in+表示年份的基数词”,表示“在……年”。in 2012 在2012年
●“in the+年份的复数形式”表示“在……世纪几十年代”。in the 1980s 在20世纪80年代
表示时间、
距离 用“基数词+名词所有格”结构作定语。five minutes’ walk 步行五分钟的路程
表示长、
宽、高等 基数词+单位名词(meter/meters, foot/feet等)+形容词(long, wide, high等) = 基数词+单位名词+in+名词(length, width, height等)。three meters high = three meters in height 三米高
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语法六 数词
表示
电话号码 用基数词逐个读,如遇重复数字,用“double”。566-8532读作five double six eight five three two。
构成复合
形容词 “基数词+可数名词单数”构成复合形容词作定语时,各部分之间用连字符“-”。
a ten-dollar hat 一顶十美元的帽子
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语法六 数词
【拓展】(1)表示数量在原有基础上增加:基数词(除one外)+more+名词复数 = another+基数词(除one外)+名词复数。two more hours = ④____________ two hours 再多两个小时
(2)表示频率、倍数:once (一次;一倍); twice(两次;两倍);三次/三倍及以上,用“基数词+times”表达。four times a week 一周四次
【注意】(1)“基数词+表示时间、距离、重量、金钱等概念的词”作主语时,常被看作一个整体,谓语动词用单数。 Six miles ⑤___ a long walk to me. 6英里对我来说是很长的一段路。(2)一个半小时/星期/月或一天/年半:one hour/week/month/day/year and a half = one and a half hours/weeks/months/days/years
another
is
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语法六 数词
2. 序数词
(1)基数词变序数词的规律
eleventh
fifth
forty-sixth
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语法六 数词
(2)序数词的用法
表示顺序 表示顺序时,序数词前常加the。 on the fourth floor 在四楼
【注意】序数词前若有形容词性物主代词、名词所有格等限定词时,则不加the。
表示“又一,再一” “a/an+序数词”表示“又一,再一”,内含顺序性。a second try 第二次尝试
表示日期、世纪 ●“几号”可用基数词或序数词。
1(st) September/September 1(st)读作the first of September或September the first。
●表示“……世纪”,用序数词。in the nineteenth century 在19世纪
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语法六 数词
【拓展】分数表达法
(1)分子用基数词,分母用序数词。当分子>1时,分母用复数。one sixth 六分之一;five sixths 六分之五
(2)特殊表达:a half 二分之一;a quarter 四分之一;three quarters 四分之三
(3)“分数+of+名词/代词”作主语时,谓语的数应与of后面的名词或代词的数保持一致。A half of students in our class have lunch at school. 我们班一半的学生在学校吃午饭。
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语法六 数词
试题精练
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一、单项选择
常考点
1. (2024牡丹江)There are ______ solar terms(节气) in a year. Lichun is the first one.
A.twenty-four
B.twenty-fourth
C.the twenty-fourth
2. I’ve watched this movie ________ times.
A.three B.third C.the third
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语法六 数词
3. (2024自贡)—There is going to be the ________ Art Festival next week.
—Great. We can enjoy some beautiful paintings again.
A.two B.first C.second
4. (2024达州改编)—Why is Jenny so happy?
—Because today is her ______ wedding anniversary(结婚纪念日).
A.tenth B.the tenth C.ten
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语法六 数词
易错点
5. —It’s Mom’s ________ birthday next Sunday. What should we do?
—We can buy her ________ flowers.
A.forty; forty B.forty; fortieth C.fortieth; forty
6. My family had a ________ trip in Wuhan this vacation.
A.eight days B.eight-days C.eight days’
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语法六 数词
7. Every year, we give away ________ books to the children in the countryside. Last month, we gave them ________ books.
A.thousands of; seven hundred
B.thousand of; seven hundred
C.thousands of; seven hundreds
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语法六 数词
8. Most of the doctors in this hospital were born ________, and they are ________ now.
A.in 1970s; in their fifty
B.in the 1970; in the fiftieth
C.in the 1970s; in their fifties
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语法六 数词
9. Nearly ________ of the task ________ completed by us.
A.three fourth; was
B.three fourths; was
C.third fourths; were
10. The bridge is a ________building. It’s about ________ and gives us better public transportation.
A.nine-year-old; 1100 meters long
B.nine-year-old; 1100-meter-long
C.nine years old; 1100 meters in length
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语法六 数词
二、用括号内所给单词的适当形式填空
1. (2024广安改编)December is the __________ (twelve) month of the year.
2. It’s my ________(one) visit to this history museum. I’ve never been here before.
3.In this activity, the _________________(eighty-eight) customer will get a surprise gift.
4. (2024达州改编)___________(million) of foreign tourists visit China every year.
twelfth
first
eighty-eighth
Millions
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语法六 数词
5. The new clothes store is on the ________(three) floor of the shopping center.
6. My uncle took up painting as a hobby in his __________(sixty) after he retired(退休).
7. We do eye exercises ________(two) a day at school in order to keep our eyes healthy.
8. (2024龙东地区)Three _________(five) of the students in our class like playing basketball.
third
sixties
twice
fifths
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语法六 数词
9. These photos show what our hometown looked like in the ___________ (twenty) century.
10. Lily had read twelve stories and she will read a _____________ (thirteen) one tomorrow.
twenties
thirteenth
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语法六 数词
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