人教版中考英语复习数词的用法 学案

1、课题：数词课时：2学生：授课老师：教学目标数词的用法重点难点序数词1-、数词.基数词191119整十几十几oneelevententwotwelvetwentytwenty-onethreethirteenthirtythirty-threefourfourteenfortyforty-fourfivefifteenfiftyfifty-fivesixsixteensixtysixty-sixsevenseventeenseventyseventy-seveneighteighteeneightyeighty-eightninenineteenninetyninety-nine基数词的读法(1

2、)在读三位数或三位数以上的基数词时，需在十位数之前(假设十位数是“0”， 在个位前)加连词and。304-three hundred and four1,342-one thousand three hundred and forty-two(2)阿拉伯数字每三位数就需用一个逗号隔开，从后往前数；所用的英语单词 为：thousand, million, billion,英语中没有“万”和“亿”，在表示“万”和“亿” 时要按十进位法来推算。1万可用10千来表示，即10,000100,000,000 可写成 a hundred million2.序数词(1)第至第十第十一至第一十第一十一至第二十第

3、整十至第一百firsteleventhtwenty-firstsecondtwelfthtwenty-secondthirdthirteenthtwenty-thirdfourthfourteenthtwenty-fourthfortiethfifthfifteentwenty-fifthfiftiethsixthsixteenthtwenty-sixthsixtiethseventhseventeenthtwenty-seventhseventietheightheighteenthtwenty-eightheightiethninthnineteenthtwenty-ninthnineti

4、ethtenthtwentieththirtiethhundredth助记歌基变序，有规律，末尾加上th;一二三特殊记，词尾分别t, d, d;八加h,九去e, ve要用f替；以y结尾变ie,后跟th莫忘记； 假设想表示几十几，只变个位就可以(2)序数词的基本用法基本概念基本用法例子序数词(表示数目的顺序 或事物的位置)表示编号Mary sits in the second row.表示日期It happened on October the third, 1985.主要用作定语、标语，前 面要加定冠词theThe fifth lesson s very easy to learn.3.数词常

5、见的表达法(1)年代的表达法in the 1930s/l 930s(2)日期表达法(年份用基数词，日期用序数词) 1988年5月1日：写作：May 1st, 1988,读作：May the first, nineteenth eighty-eight或 1,t May, 1988,读作：the first of May, nineteenth eighty-eight(3)分数的表达法分数在英语中通常是借助基数词和序数词来共同表达的，其中基数词表示分子, 序数词表示坟墓。当分子大于1时，坟墓要用复数形式。one third 三分之一two thirds 三分之二a/ one quarter 四

6、分之一three and one fourth 三又四分之一(4)小数的表达法小数用基数词来表示，以小数点为界，小数点左边的数字为一个单位，表示整数, 数字合起来读；小数点右边的数字为一个单位，表示小数，数字分开来读；小数 点读作point, 0读作zero或o；整数局部为零时，可以省略不读。0.4-zero point four/point four10.23-ten point two three(5)百分数的表达法百分数用 基数词+percent表示0.68%-zero point six eight percent6%- six percent(6)倍数的表达法表示两倍的用twice,

7、表示三或三以上的倍数用基数词+times。The room is twice as large as that one.This tree is three times as tall as that one.易混易错.数词和冠词的关系序数词前要加定冠词the；但基数词前不加冠词a/an+序数词，表示“又一，再一”ofthe+基数词，表示范围序数词前已有指示代词、物主代词或every时，不用定冠词。在一些由序数词构成的固定词组中不用定冠词.数词的读法从后往前数，每三位加一个逗号；第一个逗号前读hundred,第二个逗号前读 million,第三个逗号前读billion。年份的读法是两位两位地读

8、。.基数词与单数名词用连字符链接构成符合形容词，作名词的定语。.几个半的读法基数词+and+a half+名词复数=基数词+名词（单数/复数）+and+ a halftwo and a half hours = two hours and a half.与another, more连用时;表示在已有的基础上再增加一定的数量，其结构为 “another+基数词”或“基数词+more”My father will stay in Beijing for another two weeks.I need two more chairs.表示编号时的易混之处用基数词来表示编号时，应放在名词之后，且不需

9、要任何冠词（但通常名词第 一个字母要大写）用序数词来表示编号时，应放在名词之前，且前面需要加定冠词the习题（一）Yesterday people came to the town to watch the car race.A. hundreds B. hundred C. hundreds of D. hundred ofTree Planting Day is in March, the month of the year.A. three B. third C. five D. fifth-Mum, the beautiful card I made last night is jus

10、t for your birthday.-Oh, thank you, my dear!A. forty B. the fortieth C. fortieth D, fourthMay is the month of a year.A. fifty B. fifteen C. fifth D. five-1 heard your friend is visiting Sanya again. Is it the second time for him?-Yes, and he will come for time next spring.A. a thirdB. a second C. a

11、thirdA girl looked after her disabled father.A. three-year-old B. three-years-old C. three year oldMothers Day is on the Sunday in May every year.A. two B. second C. six D. sixth-Excuse me, sir. Heres a package for Lin Tao. Which room does he lives in?A. 308 Room B. Room 308 C. The Room 308 D. The 308 Room-How far away is the small village from Moscow?-its about kilometer.seven hundred and twenty twoseven hundred and twenty-twoseven hundreds and twenty-twoseven hundreds and twenty-twoThere are sixty students in our class. And of us