钟数词专题复习课件

四.时间的表达
2. Now, everyone, please turn to Page _____ and look at the _____ picture. A (2012兰州市) A. Twelve; fifth B. Twelfth; fifth C. Twelve; five D. Twelfth; five
当hundred, thousand等数词与of 连用, 表示不具体、不准确的数目 时, 词尾须加-s。如: thousands of students, millions of trees.
hundreds thousands millions
表示 +of 概数
1. The number 2,146 is read as ___. A. two thousands and one hundred and forty and six B. two thousand and a hundred and forty-six C. two thousand, one hundred and forty-six C D. two thousands, one hundred, forty-six
分数 + of + 可数名词复数 谓语动词用复数
分数 + of + 不可数名词 谓语动词用单数
Three fourths of the apples ____ are bad. Three fourths of the apple ____ is bad.
（二）“基数词-名词(-形容词)”结构:
• 中考对数词的考查主要包括以下几个方面：
• 1 掌握基数词和序数词的构成和用法。 • 2 考查hundred, thousand, million,billion等 词的用法。 • 3 分数的表达及主谓一致。 • 4 掌握年、月、日及时刻的表达。
数词---就是表示事物的数量 和顺序的词,分为基数词和序 数词两种。
fifty-second
eight eighth nine
ninth
1. December is the ____ month in a year. D A. twenty B. twelve C. ninth D. twelfth
2. There are ___ people in my family. We live on the ___ floor in a tall building. D A. five, six B. fifth, six C. fifth, sixth D. five, sixth
11thபைடு நூலகம்
12th 13th 14th 15th 16th 17th 18th 19th 20th
基数词
序数词
twenty-one thirty forty fifty sixty seventy eighty ninety
twenty-first thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth
基数词
2. th 4上起
•
序数词
1.一、二、三，特殊记 first ,second, third
3. 8减t,9少e ：eight
eightth
nineth
nine
fifth
4.f来把ve替:five
twelve twelfth 5. 整十变y为ie: sixty sixtieth
6.若是遇到几十几只变个位就可以
a fourth / one fourth / a quarter / one quarter
1 a half 2
注意： 1 不用one second 2
1. In our class ___ of the students are girls. A. three fifths B. three fifth A C. third five D. third fifths
等词的用法
表示具体、准确的数目时, hundred, thousand, million等词 后不能加-s,如: five hundred, six thousand, seven million 等。
hundred, thousand, million, billion
等词的用法
基数词+
hundred 表示 thousand 具体 million 数字
2. There are ________ students in C that school. A. two thousand eight-six B. two thousand eighty-six C. two thousand and eighty-six D. two thousands and eighty-six
这个结构:只能放到名词前作定语; 中间的名词只能用单数。
Tom is a 10-year-old boy.
注意: 在be动词后用作表语时,不能 用连词符,名词有复数。
Tom is 10 years old.
1.Each of us has to write a ____ report every two weeks. A. two-hundred-word B. two-hundreds-word C. two-hundreds-words D. two-hundred-words
D Chinese are looking for 3.___ ways to learn English well before Beijing 2008 Olympics. A.Thousand B.Thousand of C.Thousands D.Thousands of
4. Nine _____ pounds a week? That’s very good. A. hundred of B. hundreds of C. hundreds D. hundred D 5. Sharks have been on the earth for _____ years. A. thousands of B. two thousands A C. two thousands of D. thousand of
26 twenty-six 260 two hundred and sixty 2,026 two thousand and twenty-six 1,200,226
one million, two hundred thousand, two hundred and twenty-six
hundred, thousand, million, billion
数 词
基数词 表示事物的数量 序数词 表示事物的顺序
基数词 构成方法如下： (1)1-12分别由从one到twelve12个 各不相同的词表示。
1 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve
2. __ of the students __ boys in our class. A. Two three; are B. Two thirds; are B C. Two thirds; is
3. __ of her money __ spent on clothes. A. Two three; are B B. Two thirds; is C. Two third; is 4. __ the teachers in our school is about one hundred, and __ of them are women teachers. A. The number of; two third C B. A number of; two thirds C. The number of; two thirds
万以上的数字读法特点
6, 500, 431, 729
billion million thousand
注意每三个数为一个单位，按照百、 十、个向下读。
6，500，431，729
billion
six billion,
million
thousand
five hundred million, four hundred and thirty-one thousand, seven hundred and twenty-nine
表示“几十几”时, 个位和十位之 间需加连词符, 如: twenty-one, thirty-two.
(5).三位数以上的数，从个位往前 数，每三位数加一个逗号“，”， 从后往前数的第一个逗号代表 thousand,第二个逗号代表 million,第三个逗号是billion，注 意这几个词不能用复数形式，后 也不能加and。
A
（三）表示事物的编号
基数词放到名词的后边,该名词一 般要大写；序数词放到名词的前面， 加定冠词。
• 例如： • 第一课 Lesson 1
the first lesson
1.Mr Zhang stays at _________ on ________ floor at Changqing Hotel. A. Room 203; second C B. 203 Room; the second C. Room 203; the second D. the Room 203; two
数词的表示法 — 分数
分数的表示法:
基数词
序数词
分子用基数,分母用序数。
分子大于1时,分母用复数(+s)。
1 5
2 7 1 4 3 4
分子 基数词 分母 序数词 分子 ﹥ 1 分母 + s 分子 a 分母 quarter three fourths three quarters