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1、Unit 7 How much are these socks？,一、数词的分类:,表示数目多少的数词叫基数词,基数词（num.）,序数词（num.）,表示顺序的数词叫序数词,二、数词的构成:,1至12分别记,13至19都带-teen,整十后面要用-ty,百位以上用and连,连字符“-”用于几十几,基数词的构成,三、基数词的基本用法:,1) She has one son and two daughters. She has one pair of shoes and two pairs of jeans.,1以上的基数词放在可数名词前，名词要用复数形式。,of前的数量词有1以上的数词时，数量
2、词要用复数形式。,表示数量,2) Well have a two-week days holiday.I must write an (a) _diary.800-words B. 800-wordC. 800 word D. 800 words,“基数词-名词”构成复合形容词时，数词和名词之间应用“-”连接，数词大于1，名词也不能用复数形式。,B,3)百位数hundred以上的基数词 写法： seven hundred and eighty-five 361 写作_ 209 写作_,7,8 5,百位和十位之间 用and连接,three hundred and sixty-one,two hu
3、ndred and nine,4) hundred用法：,two hundred cars five hundred students,hundreds of carshundreds of students,后接of时，hundred必须要+s，且不可以有基数词。,hundred前有确定的基数词，hundred不可以+s。,四、基数词表达年、月、日。,1)表示“年”： 1998 读作：nineteen ninety-eight. 1806 读作：eighteen and six.,年和年代用基数词，多用阿拉伯数字表示，注意读法：,2)表示“某日”：,2018年7月8日,July 8(th),
4、2018,8(th)July,2018,the 8th of July,2018,3),表示编号：,Room 206,Bus No.3,Page Four,Unit Five,名词+基数词,4),表示年龄、时刻、价格：,How old are you?-Im thirteen.,What time is it?-Its six ten.,How much is your shirt?-Fifty yuan.,五、选择填空：,1.Please turn to _. A. page 11 B. the 11th page C. Page 11 D. page the 11th 2. There a
5、re some _ in our library. A. hundred of books B. hundreds of books C. two hundred of books D. hundred of book 3.Mr. Smith stayed in _last night. A. Room 403 B. the room 403 C. the 403 room D. 403 Room,C,B,A,4. Do you think there is any room for us _? A. Two B. the two C. second D. the second5. Cindy was born on _. A. February 2006,12 B. 2006,February 12 C. 2006,12 February D. February 12,20066.There are _seasons in a year in our country. A. four B. fourth C. two D. the second,A,D,A,