中考专项复习之数词课件

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1、一一.基数词、序数词基数词、序数词二二.数词的表示法数词的表示法基数词基数词 1.基数词表示数目的词称为基数词。基数词表示数目的词称为基数词。其形式如下：其形式如下：A110one，two，three，four，five，sixseven，eight，nine，tenB 1119eleven，twelve，thirteen，fourteen，fifteen，sixteen，seventeen，eighteen，nineteenC 2199 表示几十几时，在十位和个位之间添加连字符“-”21 32435465768798twenty-oneforty-threethirty-twofifty-f

2、oursixty-fiveseventy-sixeighty-sevenninety-eightD百位数百位数三位数以上的基数词，在百位和十位一般三位数以上的基数词，在百位和十位一般要用要用“and”连接。连接。101 320 648 E千位数以上千位数以上从数字的右端向左端数起，从数字的右端向左端数起，每三位数加一个逗号每三位数加一个逗号“，”。从右开始，第一个。从右开始，第一个“，”为为thousand，第二第二个个“，”为为million，第三个，第三个“，”为为billion。如：如：1,234,567,890one/a hundred and onethree hundred and

3、 twentysix hundred and forty-eightone billion two hundred and thirty-four million five hundred and sixty-seven thousand eight hundred and ninety“1509”If it is an amount(数量)1,509 reads like this one thousand five hundred and nine(2)If it is a date(日期)15 09 reads like this (3)If it is a telephone numb

4、er(电话号码)reads like this “0”在英语里读成在英语里读成“o”or“zero”1.hundred thousand (表示具体数字表示具体数字)million billion2.hundreds thousands (表示概数表示概数)millions billions三三.基数词的用法基数词的用法数词数词twotwo(several)+)+ofsome/many hundreds of1)基数词表示确切的数时，不用复数形式.2)表示不确切数，如成百、成千上万，则用复数。There are hundreds of people in the hall320 three h

5、undred and twenty3人的不确切岁数或年代，用几十的复数形式。He became a professor in his thirtiesIt was in the 1960s4基数词的句法功能可作主语、宾语、定语、表语、同位语。The two happily opened the box（作主语）They three tried to finish the task（作同位语）1.If a=3,b=4,whats the answer to the problem,a+2ab+1=?the answer is_.A.twenty eight B.twenty-eighth C.t

6、wenty-eight2.In our school several _ students are able to search the Internet.A.hunderd of B.hunderds of C.hundred3.Many _ sheep were killed in the accident.A.thousands of B.thousand C.thousands4.There are over nine _ workers in the factory,but _ of young people hope to work in it.A.hundred;hundreds

7、 B.hundreds;hundreds C.hundreds;hundred 月日年月日年 在在2008年年10月月1日日四四.数词的表示法数词的表示法 年月日年月日on Octorber the first,two thousand and eight日日the+序数词序数词月月（首字母大写）（首字母大写）月日与年之间月日与年之间用用 ，分开分开年年（两位两位读）（两位两位读）on August the ninthin May,two thousand and ten有日用有日用 onon 无日用无日用ininon Oct.1st,2008 月日月日 在在8月月9日日 月年月年 在在201

8、0年年5月月1.The accident happened on_.A.April 5,2001 B.2001,April 5 C.April 2001,52.I was born _.A.in March 8,1993 B.on July 9,1994 C.on May,199520世纪90年代in the 1990s在他50多岁时in his fifties四四.数词的表示法数词的表示法 年代世纪年代世纪in thein ones+整十基数词复数在某人几十岁时nineteen nineties1.There will be more chances in _ century than in

9、 _ century.A.twenty-one,twenty B.twenty-first,twentieth C.the twenty-first,the twentieth2.The city changed a lot _.A.in 1980s B.in the 1980s C.in the 19803.He graduated in _ of _ century.A.the sixtieth;twenty B.sixty;the twentieth C.the sixties;the twentieth4.He got the prize _.A.in his fifties B.in

10、 fifties C.in his fifty时间和钟点时间和钟点时间的表达方式时间的表达方式 1直接表达法。即先读小时，再读分钟直接表达法。即先读小时，再读分钟 如：如：4：10 读成读成 8：36 读成读成2逆读法。即先读分钟，再读小时逆读法。即先读分钟，再读小时分钟小于分钟小于30的用的用“past”，中文译为中文译为“过过”。即分钟即分钟+past+时钟，时钟，中文译为中文译为“几点过几分几点过几分”如：如：5:10（5点过点过10分）读成分）读成 2:02（2点过点过2分）分）读成读成four teneight thirty-sixten past fivetwo past two分

11、钟超过分钟超过30（不包括（不包括30分钟）用分钟）用“to”（中文译为（中文译为“差差”）即即“60-分钟数分钟数+to+钟点数钟点数+1”（中文译为：几点差几分中文译为：几点差几分）如：如：7：45（八点差（八点差15分）分）读成读成 1：58（两点差（两点差2分）分）读成读成3半小时用半小时用“half”,一刻钟用一刻钟用“quarter”。注意：一刻钟注意：一刻钟 a quarter 三刻钟三刻钟 three quarters 如：如：4:30 读成读成 9:45 读成读成 a quarter to tentwo to twohalf past fourfifteen to eight

12、特别注意：一个半小时的表达方式：特别注意：一个半小时的表达方式：one/an hour and a half one and a half hoursCan you read them?1:30 2:15:3:456:387:259:50one thirtyhalf past onetwo fifteena quarter/fifteen past twothree forty-fivea quarter/fifteen to foursix thirty-eighttwenty-two to seventwenty five past sevenseven twenty-fiveten to

13、 tennine fifty三年半的两种表达方式三年半的两种表达方式:three years and a halfthree and a half years1.Its already 7:40 now.When will the film start?_.We still have five minutes.A.A quarter to seven B.Seven past forty-five C.A quarter to eight1 15 5分子分子 基数词基数词分母分母 序数词序数词one fifthone fifth2 27 7分子分子 1 1分母分母 +s+stwo sevent

14、htwo sevenths s1 14 4分子分子 a a分母分母 quarterquartera quartera quarter3 34 4three quarterthree quarters s1 12 2a halfa half1 13 3threethree andand one third one third3 3基数词基数词 +and+and+分数分数四四.数词的表示法数词的表示法 分数百分数分数百分数分数、百分数、小数的表达方法分数、百分数、小数的表达方法（以分数（以分数考法较为常见）考法较为常见）1.分数分数:分子用基数词，分母用序数词，分子分子用基数词，分母用序数词，分子

15、大于一，分母加大于一，分母加s1/2 读作读作 2/3 读作读作1/13 读作读作 3/4 读作读作2小数小数,百分数的读法百分数的读法:小数点读成小数点读成point 3.6 读作读作百分号百分号%读成读成 percent 50%读作读作one second（a half）two thirds 或者或者 two-thirdsone thirteenththree fourths或者或者three-quartersthree point sixfifty percent80%80%基数词基数词 +percent percenteighty percenteighty percenthalf/(

16、百百)分数分数+of+可数名词复数可数名词复数 谓语动词用复数谓语动词用复数half/(百百)分数分数+of+不可数名词不可数名词谓语动词用单数谓语动词用单数3.783.78three three pointpoint seven eight seven eight1._ of the students _ boys in Class A.Two three;are B.Two thirds;are C.Two thirds;is2._ of her money _ spent on clothes.A.Two three;are B.Two thirds;is C.Two third;is3

17、._ the teachers in our school is about one hundred,and _ of them are women teachers.A.The number of;two third B.The number of;two thirds C.A number of;two thirds一个半小时一个半小时两个半小时两个半小时 two two andand a half hour a half hours s=two hour=two hours s andand a half a half one one andand a half hour a half

18、hours s=one hour=one hour andand a half a half四四.数词的表示法数词的表示法 半的表示法半的表示法1.The boy always stays there for _.A.one and half hour B.one and a half hour C.one and a half hours2.The old man drank_ beer.A.two bottles and a half B.two and a half bottle C.two bottle and a half一倍一倍 once，两倍，两倍 twice，三倍三倍 thre

19、e times (三倍或以上三倍或以上 基数词基数词times)四四.数词的表示法数词的表示法 倍数倍数 This box is five times as big as that one.=This box is four times bigger than that one.A+be+倍数倍数+as+adj.原原+as+B.A是是B的的 倍倍 C+be+倍数倍数+adj.比比+than+D.C比比D 倍倍1.This building is _ that building.A.three time as tall as B.twice taller than C.three times a

20、s taller as2.我的箱子比你的重六倍我的箱子比你的重六倍!My box is _ yours.six times heavier thanseven times as heavy as The winner is _.He is an _ boy.A.eight-year-old;eight years old B.eight years old;eight-year-old C.eight-years old;eight-year-old He came to China _.A.at the age of 20 B.when he is 20 C.at age of 20四四.数

21、词的表示法数词的表示法 年龄年龄 The river is about _.A.6,000 meters long B.6,000-meters-long C.6,000-meter-long四四.数词的表示法数词的表示法 计量计量be+数词数词+量词量词+形容词形容词10.He went down to the village which was _miles away from the city.A.three hundreds B.three hundredC.three hundreds ofB.three hundred6The wall is_.Afour meters long

22、Bfour meter long Cfour-meter long7Whats the date today?Its_AMarch the eight BMarch eighthCeight，March8It happened in the 1040sA in the forties of the eleventh centuryB in the forties of the tenth centuryC in the forty9About_ of the earths surface is covered with water.A.three-fours B.three-fourth C.

23、three-fourthsAfour meters longBMarch eighthA in the forties of the eleventh centuryC.three-fourths选择填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight Beight five Ceight o five3Eight plus eight is_.Asixteen Bsixty-four Cone4He is an _boyAeight

24、years Beight-year-old Ceight-years-old5We will have a_ walkAten minutes Bten minutes Cten-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes四、加减乘除表示法1.“加加”用plus，and或add表示 How much is two plus three?It is fiveTwo and three is equal to five2.“减减”用 minusHow much is ten minus six?3.“乘乘”m

25、ultiply3X4?How much is three times four?4.“除除”用divide的过去分词形式表示164=?How much is sixteen divided by four?2more还可与a little，a few，a lot，several等词连用（1）There are many more dictionaries on the desk课桌上有许多词典。（2）Would you like some more tea？再喝点茶好吗？4.名词省略 如果前后意思清楚，another或more后面的名词可以省去。如：1I climbed the stairs

26、slowly，carrying a big suitcase，my father following with two more1Tony is going camping with _boys next SundayAlittle two other Btwo little other Ctwo other little Dlittle other two 3Do you know where he found the other two photos？另外两张照片 3.more 1more1）She has got five more electric fans她还有五台电扇。anothe

27、r,other,more修饰数词的用法修饰数词的用法1.another A)another+名词单数 B)表“另外的、额外的、附加的时，+few或具体数字的复数 1Have you finished your report yet？No，I will finish it in 10 minutes Aanother BOther Cmore Dless 2The strike may last another three days罢工可能还要持续三天。2.other+复数名词，置于数词之后B)但与定冠词the连用时，other要放在数词前。序数词序数词1.序数词一般由基数词后加序数词一般由基数

28、词后加th构成，前面构成，前面一般加定冠词一般加定冠词the。第第18第第2002.以以y结尾的基数词构成序数词时，先把结尾的基数词构成序数词时，先把y改成改成i，再加，再加eth。第第50 第第203.不规则的序数词有以下几个不规则的序数词有以下几个first,second,third,fifth,eighth,ninth,twelfth（一定要记住）（一定要记住）the eighteenththe two hundredththe fiftieththe twentieth first 1st second 2nd third 3rd fourth 4th fifth 5th sixth

29、6th seventh 7th eighth 8th ninth 9thtwelfth 12thtwentieth 20ththirtieth 30thfortieth 40thfiftieth 50thsixtieth 60thseventieth 70theightieth 80thninetieth 90thC序数词的缩写形式:阿拉伯数字后加上th。irstlst second2nd third3rdfourth4th twentieth20thtwenty-third23rdD序数词的句法功能序数词在句中可作主语、宾语、定语和表语。The second is what I really

30、 need（作主语）He choose the second（作宾语）We are to carry out the first plan（作定语）She is the second in our class（作表语）4.表示第几十几时，十位用基数词，表示第几十几时，十位用基数词，个位用序数词，十位和各位用连字符个位用序数词，十位和各位用连字符-连接连接第三十一第三十一第六十五第六十五 第七十四第七十四 第九十九第九十九第八十二第八十二thirty-firstsixty-fifthseventy-fourthninety-nintheighty-second5.编号的三种表示法编号的三种表示法

31、1）名词基数词）名词基数词 Lesson Three2）the序数词名词序数词名词 the third lesson3）名词）名词数字数字 Lesson 3如：如：5班班Class Five=the fifth class=Class 5一般编码用一般编码用 名词名词 +基数词基数词207207房房 三年级一班三年级一班第五部分第五部分第一课第一课3 3 号汽车号汽车第一中学第一中学Room 207 Room 207 Class one Grade threeClass one Grade threepart five=the fifth partpart five=the fifth par

32、tlesson one=the first lesson lesson one=the first lesson Bus No.3=Bus No.3=the No.3 busthe No.3 busNo.1 Middle SchoolNo.1 Middle School四四.数词的表示法数词的表示法 编号编号1、This is Mr Whites _ visit in Beijing.He has been there twice before.A.two B.second C.three D.third2、There are _ months in a year.October is the

33、 _ month.A.twelve,ten B.twelfth,tenthC.twelve,tenth D.twelfth,ten3、There are _ people in Peters family.They live on the _ floor in tall building.A.six,eighteen B.six,eighteenthC.sixth,eighteenth D.sixth,eighteen4、_ is the easiest of all.A.Lesson one B.The Lesson oneC.Lesson First D.The first lesson5

34、、The foreign guests stayed in _ last night.A.Room 608 B.the Room 608C.the 608 room D.608 the room注：通常前面要加定冠词 the；但出现不定冠词a或an时，则表示“再”，“又”。Well go over it a second time特别说明：特别说明：1、世纪、年代、年份、月份时，用介词、世纪、年代、年份、月份时，用介词in2、某一天、星期前用介词、某一天、星期前用介词on3、某一天早晨、下午或晚上时，用介词、某一天早晨、下午或晚上时，用介词on。1、_ a cold morning，the o

35、ld man died lonely in his house2、The girl was sent to hospital _ the morning of March 20.3、My son was born _ October 2010.4、People are very poor _ the fifties.Ononinin 分数，小数，分数，小数，百分比百分比热门考点一：热门考点一：hundred、thousand、million、billion的考查方法的考查方法1和和“of”连用，前面不能有具体的数连用，前面不能有具体的数,而且这四个词的本身而且这四个词的本身必须用复数。如必须用

36、复数。如 hundreds of 数以百计的数以百计的 thousands of 数以千计的数以千计的 millions of 数以百万计的数以百万计的 billions of 数以十亿计的数以十亿计的 many hundreds of students.好几百个学生好几百个学生2当它们的前面有具体的数修饰时当它们的前面有具体的数修饰时,其本身即不能用复数，其本身即不能用复数，不能和不能和“of”连用。连用。two thousand students 两千名学生两千名学生 five hundred cars 五百辆车五百辆车 1、By the end of last year,we had p

37、lanted about five _ trees.A.hundred B.hundreds C.hundred of D.hundreds of2、_ books must be produced for the children.A.many thousands B.many thousands ofC.many thousand of D.many thousand热门考点二：其它重要表达方式的考法热门考点二：其它重要表达方式的考法1.在某人多少岁在某人多少岁 in+ones+几十的复数形式几十的复数形式 eg:My parents are in their fifties.2a fiv

38、e-year-old boy an eight-year-old girl3100-meter-long bridge (100米长的桥米长的桥)10 meters deep (10米深米深)4ten-minute walk=ten minutes walk5.two more hours=another two hours.()1、The has written a _ compositionAthree-hundred-word Bthree-hundred-wordsCthree hundreds wordsDthree hundreds word()2、Every day the ol

39、d woman sits here for _.A.one and half hour B.one and a half hourC.one hours and a half D.one and a half hours()3、He became very rich _.A.in his fortyB.in the fortiesC.in his forties D.in the forty()4、Mary is _ girl.A.an 8 year-oldsB.an 8-year-oldC.an 8-years-old D.a 8-year-old ADCB()5、Guangzhou Tow

40、er is almost _A600 meter high B600 meters highC600-meters-highD600-meter-high()6、Have you got enough books?No.I need _.A.ten more B.more tenC.ten another D.other tenBA选择填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight Beight five Ceight o five3Eight plus eight is_.Asixteen Bsixty-four Cone4He is an _boyAeight years Beight-year-old Ceight-years-old5We will have a_ walkAten minutes Bten minutes Cten-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes