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1、数词1.基数词的构成及用法(1) 1 到 12：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve。(2) 13 到 19：以-teen结尾。thirteen, fifteen, eighteen, nineteen(3) 20到90:以-ty结尾。twenty, thirty, fifty, eighty, ninety(4) 21-99之间数字的表达：十位和个位之间加连字符“-”，如twenty-five(5)百位以上的数词，要在百位和十位之间加and。101：one hundred and o
2、ne 258：two hundred and fifty-eight(6) hundred百，thousand 千，million百万 ,billon十亿(7) hundred, thousand, million在任何具体数字之前，都要用单数形式。 两百 三千 五百万 但如果其后有of，则要用复数形式(其前面不能再加具体数目)。hundreds of 成百上千的， thousands of 成千上万的， millions of 成百上千万的Thousands of visitors come to Guiyang every year.Three thousand visitors came
3、 to Guiyang last month.2.序数词的构成及用法1. 第一单第三： first, second, third.2. 第4到第19： 后加“th”： fifth，eighth, ninth， twelfth3. 20以上的整数，把 y 改成i再加 “eth”： twentieth, thirtieth, fortieth, fiftieth4. 100的序数词为：hundredth。5. 其余的两位或多位数，只将个位改成序数词 ，其余仍用基数词表示：twenty-first, thirty-second, forty-third one hundred and first 6
4、. 序数词的缩写：1st， 2nd, 3rd, 4th, 21st, 22nd, 34th, 101st 基数变序数顺口溜： 基变序，有规律； 1、2、3单独记，末尾有字母t、d、d; 8去t ，9去e，f来把ve替； 整十将y变 ie，后加th要牢记； 若是遇到两位数，十为基个为序。7. 序数词前出现不定冠词a 或an时,则表示“再, “又。You can do it a second time. 你可以做第二次。3.分数的表达法1.分子基数词，分母序数词，分子大于1，分母用复数。one half 二分之一 one third三分之一 two thirds三分之二， 五分之三 四分之一 四分
5、之三 three fourths/ three quarters2.整数和分数之间须用and连接 three and a half 读作 five and a quarter一个半小时： one/an hour and a half= one and a half hours三天半： 两年半 3.谓语动词的单复数取决于短语中名词的单复数One third of the shop assistants in this department store are men. Two fifths of the money is used.4.年、月、日的表达法Its September first t
6、oday. 今天是9月1日。It happened on September 18th, 1931. 这发生在1931年9月18日。1999年 nineteen ninety-nine 1908年：nineteen and eight 2014年 two thousand and fourteen 5.时间的表达法分钟未过半点；7：20, 可以读作： seven twenty, 或twenty past seven 12：08, 可以读作：twelve oh eight, 或eight past twelve分钟刚好半点：9：30, 可读作：nine thirty, 或half past ni
7、ne分钟超过半点： 8：46, 可读作：eight forty-six, 或fourteen to nine6. 年龄表达法 At the age of + 数字, 数字+years old, in ones 整十的复数形式实战练习( )1. It is said that SARS has killed more than _ people worldwide. A. three hundreds B. three hundreds C. three hundreds D. three hundred( )2. -How many workers are there in your fact
8、ory? -There are two _. A. hundreds B. hundred C. hundred of D. hundreds of( )3. -What do you think of a war, Li Ming?-Ive no idea. But its a fact that _ people had to leave their hometown during the war. A. three thousands B. thousand of C. thousands of D. several thousands( )4. Both of the two rule
9、rs are broken. I want to buy a _one.A. three B. third C. forth D. /( )5During World War II, a Jewish (犹太) lady was protected by a local family in Shanghai in her _. A. fiftiesB. fiftyC. fiftiethD. the fiftieth( )6-How often are the Olympic Games held？ -_ four years. A. Every B. Each C. In D. For( )7
10、. It is reported that the train accident in India killed _ people. No Chinese was_ them. A. two hundred; among B. two hundreds; amongC. two hundred; between D. two hundreds; between( )8_ of the students are girls in our class A. Two three BTwo threes CTwo thirds DSecond three( )9. The _ World Table
11、Tennis Championship began _the morning of May 25, 2010 _Moscow, Russia. A. Fifty; in; in B. Fiftieth; on; in C. Fiftieth; in; on D. Fifty; on; in( )10.What a pity! Liu Xiang didnt win the_hurdles（跨栏）. A.110-meter B.110-meters C.110 meter( ) 11.Can I help you? Id like _ for my twin daughters. A. two
12、pair of shoesB. two pairs of shoe C. two pair of shoeD. two pairs of shoes( )12. _girls took part in the Happy Girl Competition but only few of them succeeded. A. Million of B. Many million of C. One million of D. Millions of( )13There are _ people in the supermarket. Its so crowded. Ahundred Bhundr
13、eds Chundred of Dhundreds of( )14. I got a good present on my _ birthday. A. nine B. ninth C. the nine D. the ninth( ) 15.-I hear your pen friend is visiting Guiyang again. Is it the _time for him?-Yes, and he will come for a third time next springA. first B. second C. third D. fourth( ) 16. Each of us has to write a _ report every three weeks. A.two-thousand-words B. two-thousand-word C. two-thousands-words D. two-thousands-word( ) 17. This is the _ time in _ days that he has made the same mistakes. A. second; third B. two ; three C
