2.We’ll have aholiday. What about going to the West Lake?
A two days B two-day C two-days D two-days’
3.Now children, turn to pageand look atpicture in Lesson Two.
5.用于加减乘除的数字用基数词。
One plus two is three. Five times six is thirty.
6.表示百分数用基数词。Thirty percent of them is water.
7.表示分数时，分子用基数词，但分母要用序数词；若分子大于1，分母上的序数词要用复数形式。
You are the first one I believe.
（三）序数词的考点：
1.序数词表示顺序时，前要加the，后面接单数名词。
The second picture is very beautiful. The fourth student comes from America.
2.表示日期中的“日”。
3.“整十加S”用于表示“几十年代”或“某人几十多岁时”
In the 1960s, people had to lead a poor life.在20世纪60年代，人们不得不过着贫困的生活。
He invented many things in his twenties.他在20多岁时就发明了很多东西。
6. 1000以上数，使用计数符号，每三位加以逗号，从第一个逗号起单位依次为thousand, million, billion.“万”表达为ten thousand
例：579 five hundred and seventy-nine
802 eight hundred and two
4, 352 four thousand three hundred and fifty-two
A. hundredB. hundredsC. hundredthD. hundreds of
7.He took up learning German in his early ________.
A. sixtyB. sixtiethC. sixtiesD. the sixties
8.People waste ________ electricity every day. It’s time to take action.
中考英语数词讲解教案
基数词
（一）基本概念：表示数目多少的词叫基数词。
1. 1-12独立成词：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve
2. 13-19 (+teen)：thirteen, fourteen,fifteen, sixteen, seventeen, eighteen, nineteen
3.表示“年、月、日”时年份用基数词，日期用序数词，其顺序由小到大。
The accident took place in 2006.这次事故发生在2006年。
4.钟点表达法
1.先点后分，顺读法。如：8：53 eight fifty-three
2.先分后点，倒读法：
前半小时用“分钟数+ past +已过钟点数”；后半小时用“(60-分钟数) + to +下一个钟点数”；
If we add 2 to 5, we can get 7. Multiply 2 by 3, please.
练习
一、单选
1.Aboutfilms were shown during the 5th International Film Festival.
A two hundred of B two hundreds of C two hundred D two hundreds
10. ________ people took part in the search for the lost baby in Changchun.
A. Thousands ofB. two thousandsC. thousand ofD. two thousands of
11.The company decided to spend about five ________ yuan building a school for the children in western China.
14, 615 fourteen thousand six hundred and fifteen
123, 456, 789
one hundred and twenty-three four hundred and fifty-six thousand seven hundred and eighty-nine
（三）习惯表达：
one and a half apples= one apple and a half一个半苹果
half an apple半个苹果one or two apples= one apple or two一两个苹果
10:30 half past ten
10:25 twenty–five past ten
几种特殊数词
（一）普通分数：子基母序，分子>1，分母+S
1/3: one third 2/3: two thirds
1/2:读作a half或one half
1/4读作a quarter或one fourth
（二）百分比：基数词+ percent (per cent)
2%读作two percent 27%读作twenty-seven percent
9:45 fifteen to ten或a quarter to ten
加减乘除---数字的运算
（一）基础知识：=: is/ equals +: plus -:minus *: multiplied by /: divided by都是介词。
加法：3 plus 9 is/equals 12.减法：9 minus 3 is/equals 6.
正好半点用“half past +已过钟点数”；一刻钟用“quarter”。
7:20 twenty past seven; 6:35 twenty-five to seven; 1:58 two to two;
8:30 half past eight; 9:15 a quarter past nine; 9:45 a quarter to ten.
5.During World War ii, a Jewish(犹太的) lady was protected by a local family in Shanghai in her.
A fifties B fifty C fiftieth D the fiftieth
6.The one-year-old boy is smart and he is able to count up to the ________ number.
3. 20-90 (整十位数+ty)：twenty, thirty,forty, fifty, sixty, seventy, eighty, ninety
4. 21-99间的两位数，先说“十位”，再说“个位”，中间要加连字符“-”
5. 101-999之间的三位数，先说“百位”，再加and，再加末尾两位数。
（二）基数词用法：
1.从句子成分上分析，基数词在句中可用作主语、宾语、表语等。
Four of them went to the factory.（主语）I want two.（宾语）
My classmate is eighteen.（表语）
2.编号的事物用基数词。
Today we are going to study Lesson Five. He lives in Room 801.
乘法：3 multiplied by 9 is/equals27.除法：9 divided by 3 is/equals 3.
（二）句型：通常用“加减乘除”的动词原形来开头，构成祈使句，命令做题者。
Add A and B Subtract A from B
Multiply A by B Divide A by B
fourth—fourteenth—fortieth—forty-second ninth—nineteenth—ninetieth—ninety-ninth
（二）序数词的用法：
1.序数词主要用作定语、表语，前面要加定冠词the。
The fifth lesson is very easy to learn.
10.两组与数词有关的介词短语：
(1)in +定冠词the +数词的复数形式，表示年代。
in the 1870s / 1970s
(2)in +物主代词+数词的复数形式，表示某人的年龄。
in one’s thirties在某人三十多岁的时候
有时在物主代词后面可加上形容词early或late使含义更确切一些，in his early thirties.
（三）基数词考点：
1.基数词表示顺序编号时：名词+基数词，此时两个词的首字母都要大些。
Class Three Room 5 Lesson One
2.确数与概数的表达。
确数：基数词+单位+复数名词：two hundred students 200名学生
概数：单位加S +of+复数名词：thousands of visitors成千上万的游客
2016年9月19日，表示为“September 19th, 2016”;