仁爱七年级上英语专项复习四(数词).doc

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1、仁爱七年级上英语专项复习四数词数词的分类：基数词，序数词，分数，小数基数词（1）1—10（2）11—19(---teen)：11__________12__________13___________15__________18_________（3）20—99(---ty)：20__________30___________40___________50__________80__________表示几十几的时候，几十与个位数之间要加连字符“—”21_________________76__________________(4)百位数300___

2、__________________800____________________420______________________650_____________________748______________________963_____________________(5)千位数：thousand2000_____________________2001_____________________2010_____________________2100_____________________2101__________________

3、___2110______________________2122______________________3652____________________________________2648______________________________*10000___________________________(6)基数词在表示确切的数字时，不能使用百，千的复数形式，如：200twohundreds(ⅹ),但是，当基数词表示不确切数字，如成百，成千上万，三三两两时，则基数词用复数形式，如：Therearehundredsofpeopl

4、einthepark.公园里有数以百计的人ThousandsandthousandsofpeoplevisittheGreatWalleveryday.每天成千上万的人参观长城Theygotothemovietheatreintwosandthrees.他们三三两两的到电影院。（7）表示“人的不确切岁数或年代”用几十的复数形式。Heisinhisthirties.他正是三十几岁的时候。Shebecomes(成为)ateacherinhertwenties.她在她二十几岁的时候成了一名教师.(8)可用于表示时间。表达一：3:30threethirt

5、y_________________表达二：3:30halfpastthree_______________(此表达需借助past,to)4:00___________________6:20___________________7:45___________________2:59___________________Exercises:1.–Howmanystudentsarethereinyourschool?--Nine______A:hundredsB:hundredC:hundredof2.Thereare________pensan

6、dbooksintheshop.A:hundredB:hundredsC:hundredofD:hundredsof3.Therearetwo________studentsinHuayueMiddleSchool.A:hundredB:hundredsC:hundredofD:hundredsof4.Thefamous(著名的)doctordied(死)inhis___________.A:fortyB:fortiethC:forties5.Myauntis_________,butshelooksveryyoung.A.inherfiftyB

7、.atherfiftyC.inherfiftiesD.atherfifties6.__________peoplecometovisitBeijingafterthe2008Olympicgames.A:thousandB:thousandsofC:fivethousandsD:fivethousandof7.--What’sthetime?--It’s________.A.fourtwenty-fiveB.fourpasttwenty-fiveC.twenty-fivepastfourD.AandC8.--Ifa=3,b=4,what’sthe

8、answertothequestion“a+2ab+1”?--_______.A.Twenty-eightB.FourteenC.Thi