英语数词的各种表示方法课件

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初中英语语法课件-数词的表达

非整百用“and”连接,十位数与个位数 320→three hundred and twenty
位数之间用连字符“-”连接。如果 444→four hundred and forty-four 没有十位数,则百位数和个位数 108→one hundred and eight 之间用and连接。
基数词记忆口诀：
数字
形式
例词Leabharlann 13~1913→thirteen; 14→fourteen; 15→fifteen; 16→sixteen; 以-teen结尾 17→seventeen; 18→eighteen; 19→nineteen
整十位数
以-ty结尾
20→twenty; 30→thirty; 40→forty; 50→fifty; 60→sixty; 70→seventy; 80→eighty; 90→ninety
-th构成。
fourteenth→14th
fifteenth→15th; sixteenth→16th;
seventeenth→17th
数字序数词变化规则
例词
twentieth→20th; thirtieth→30th 先将整十数基数 fortieth→40th; fiftieth→50th 第20至第90 词的词尾 -ty 中 sixtieth→60th; 整十序数词的y变成ie,然后再 seventieth→70th 加-th。 eightieth→80th; ninetieth→90th
数字
形式
例词
21→twenty-one;
非整十位数
23→twenty-three; 由十位数与个位数
35→thirty-five 之间加连字符“-”

英语数词课件

英语数词课件一英文数词的各种用法英语中的数词，形态万千，要真正掌握还真不是件容易的事。

学习一下数词在数学方下面的运用。

一、表示编号1.单纯的表示编号，可在数字(用基数词表示)前加number，简写为No.。

如：No.1No.652.用“名词+基数词”，“the+序数词+名词”，表示顺序意义。

如:BusNo.65Room305theSixthLesson或LessonSix第六课二、表示倍数1.倍数+as+形容词/副词(原级)+as。

两倍：twice两倍以上：基数词+times如：Theclassroomistwiceasbigasthatone.这间教室是那间教室的两倍大。

HeatethreetimesasmanybananasasMary.他吃的香蕉是玛丽吃的三倍。

2.倍数+形容词或副词的比较级+than。

如：Thislionisfourtimesbiggerthanthatone.这头狮子是那头狮子的四倍大。

.倍数+thesize/length/weight/width/height…+of+表示比较对象的名词。

如：Thisriverissixtimesthedepthofthatone.这条河是那条河的六倍深。

4.倍数+what引导的从句。

如：Thelengthoftheroadisfourtimeswhatitwasthreeyearsago.这条路的长度是三年前的4倍。

三、表示约数1.用”dozens/scores/hundreds/thousands/millions+of”表示“几十、几百、上千、成千上万”等。

如：Thismotherboughtdozensofeggs.那个妈妈买了几十个鸡蛋。

Thousandsofpeoplediedintheearthquake.数以千计的人死于地震。

2.用morethan,beyond,ormore,over,above等来表示超过或多于某个数目。

数词PPT课件

数字基数词序数词 30 thirty thirtieth 40 forty fortieth 50 fifty fiftieth 60 sixty sixtieth 70 seventy seventieth 80 eighty eightieth 90 ninety ninetieth 100 hundred hundredth
数词的定义
数词的种类(基数词和
序数词)
数词的实际运用注意事词，数词分为基数词和序数词。表示数目多少的数词叫基数词；表示顺序的数词叫序数词。
基数词
1）基数词写法和读法： 345 three hundred and forty-five； 2）基数词一般是单数形式，但下列情况，常用复数：
0.5 zero point five, 3.145 three point one four five
4) 百分数：百分数由基数词+ percent 来表示。
3% three percent percent
56% fifty-six
5)数字运算
1＋2=3
one plus two is three
2) hundred, thousand, million等表示基数单词的词前面有基数词，用来修饰后面的名词表示精确数量时，本身不用复数形式，名词才用复数形式．
如：两千人 two thousand people
三百米 three hundred meters
但在表示含糊数量时要用复数形式，并要与of 连用，构成hundreds of（数百的）, thousands of（数千的或成千上万的）, millions of （数百万的）
示例 9:00 nine (o’clock) 9:05 nine (O) five

初中英语语法-数词PPT课件

20th twentieth 30th thirtieth 40th fortieth 50th fiftieth 60th sixtieth
100th one hundredth 1,000th one thousandth
假如碰到几十几，个位变序就可以。
f要把ve替，y换成ie，结尾别忘-th
02
01
02
03
表达年龄
1
He is in his early thirties．
2
He died in his forties．
表示“……十”的数词的复数形式可用来表示“几十几岁” ，例如：
分数的构成，分子用基数词，分母用序数词。分子是1时，分母用单数。分子大于1时，分母用复数。分数修饰名词时，后用of短语。
表达日期
1960年十月一日读作: October (the) first, nineteen sixty
2010年2月14日读作：February (the) fourteenth, two thousand and ten
(4) 表示年，月，日时，年用基数词表示，日用序数词表示。
01
I was born in________.
A
基数词放到名词的后边,该名词一般要大写；序数词放到名词的前面，加定冠词。
B
表达编号
Tony is 10 years old this year.
01
注：用作表语时，不用连字符，名词有复数.“基数词－名词－形容词”只能放到名词前作定语,这种结构中名词不能用复数。
03
Tony is a 10-year-old boy.
一万名歌迷前来观看这个明星。
序数词
序数词的构成序数词一般由与之相应的基数词加-th构成。（前三个序数词除外）

英语数词的各种表示方法课件ppt课件

teachers.
A. The number of; two third
B. The number of ; two thirds
C. A number of; t精w选oppt课t件h20i2r1ds
10
三.数词的表示法 — 半的表示法
一个半小时 one and a half hours = one hour and a half
C比D … …倍精选ppt课件2021
12
1. This building is __ that building. A. three time as tall as B. twice taller than C. three times as taller as
2. 我的箱子比你的重六倍! My box is _s_i_x_t_im__e_s__h_e_a_v_ie_r_t_h_a_n_ yours. seven times as heavy as
3. more 1．more 1）She has got five more electric fans．她还有
五台电扇。
精选ppt课件2021
21
七、another, other, more修饰数词的用法
2. The old man drank__ beer.
A. two bottles and a half
B. two and a half bottle
精选ppt课件2021
11
C. two bottle and a half
四.数词的表示法 — 倍数
一倍 once，两倍 twice，三倍 three times (三倍或以上基数词＋times)
精选ppt课件2021

中考英语语法——数词课件(56张PPT)

1. 1－3分别为first,second,third 。 2. 4－19都是在后面加上th,特殊的有fifth,eighth,
ninth,twelfth。 3. 20－90把y变成ie然后加th,如twentieth。 4. 21－99的序数词变后面的各位数。 5. 序数词可以用缩写，如1st, 2nd, 3rd ,4th…
3.百分数的表达：用“基数词+percent”表示，注意percent 不用复数形式，如：
3% three percent 50% fifty percent 百分数作主语用法同分数一样。
分数
1/3
one third
1/4
one fourth
2/5
two fifths
3/4
three fourths
百分数的用法同分数的用法
百分数+of+
(C) 单 +V单 (C) 复+V复 (U) +V单
小数
0.5 zero point five 0.32 zero point three two / thirty-two 1.6 one point six 1.72 one point seven two/seventy-two 当数值大于1时，小数点后的名词用复数。如：1.03 meters 1.5 tons
buy_____C_____ one.
A. the third B.three C.a third D. a
中考链接
1) The __D_____question is much more difficult
than this one .
A. forth
B. forty
C. fourteen

数词共13张PPT

Millions of people in the world are sending and receiving e-mails every day. 每天，世界上有数百万人在收发邮件。 2．序数词的前边加不定冠词a，表示“再一、又一”。 I'll have to do it a second time. 我得再做一次。(已经做过一次)
C．Ninth; nine
D．Ninth; ninth
语法互动(四)┃数词
4．Each of us has to write a ____A____ report every week.
A．two-hundred-word
B．two-hundreds-word
C．two-hundreds-words
activity.
A．hundreds
B．hundred of
C．hundred
D．hundreds of
2．Now, everybody, please turn to Page ____B____ and look at
the ________ picture.
A．Fifth; five
B．Five; fifth
语法互动(四)┃数词
2．序数词的构成 (1)“第一”、“第二”、“第三”分别是 first, second, third。 (2)“第四”到“第十九”除了fifth, eighth, ninth, twelfth是特殊的拼写外，其余的都在相应基数词后面加“-th”构成。如：fourth。 (3)20以上的整十的序数词由相应的基数词变y为i，再加“-eth”。如：thirty→thirtieth; fifty→fiftieth。 (4)第一百hundredth; 第一千thousandth; 第一百万millionth。

数词的用法PPT课件

3 1 基数词 + and + 分数 three and one third
时，分母用复数。
3
___C_ of the land in that district _____ covered with trees and grass. A. Two fifth, is B. Two fifth, are C. Two fifths, is D. Two fifths, are
基数词的用法8 — 编号
一般编码用名词 + 基数词
207房
Room 207
三年级一班 Class One Grade Three
第五部分 Part five = the fifth part
第一课
Lesson one = the first lesson
3 号汽车 Bus No.3 = the No.3 bus
1. “加”用plus：[plʌs] ，and或add表示 How much is two plus three? It is five．
Two and three is equal to five． 2. “减”用 minus：['mainəs]
How much is ten minus six? 3. “乘” times或者multiply['mʌltiplai]
5. The yellow river is _A___in China. It goes through many
cities in China. A. the second longest river B. the longest scond river C. the second longest rivers D. the longest scond rivers

英语语法复习课件--数词

三.基数词的用法
1.
数词 (several)+
hundred thousand (表示具体数字) million billion
2. hundreds
thousands
(表示概数)
millions
+ of
billions
some / many hundreds of
1. — If a = 3, b=4, what’s the answer to the problem, a+2ab+1= — the answer is___. A. twenty eight B. twenty-eighth C. twenty-eight
四.数词的表示法 — 半的表示法
一个半小时 one and a half hours = one hour and a half
两个半小时 two and a half hours = two hours and a half
1. The boy always stays there for __. A. one and half hour B. one and a half hour C. one and a half hours
be + 数词 + 量词 + 形容词
2. The city changed a lot ___. A. in 1980s B. in the 1980s C. in the 1980
3. He graduated in __ of __ century. A. the sixtieth; twenty B. sixty; the twentieth C. the sixties; the twentieth

英语语法复习：数词课件-(共15张PPT)可修改全文

知识讲解
序数词
3. 第三类 twentieth (20th)，thirtieth (30th)，fortieth (40th)，fiftieth (50th)，sixtieth (60th) seventieth (70th)，eightieth (80th)，ninetieth (90th) 这一类全是十位整数的序数词，共八个。它们的构成方法是：先将相应的十位整数的基数词词尾－ty中的y改成i，然后在加上后缀－eth。
知识讲解
基数词
4. 第四类：这一类词可以看成是一种合成词，其结构方式是：用十位整数加上个位整数，其间用连字符号“－”连接，表示“几十几”。这类基数词的变化是规则的。 twenty-one, forty-six, seventy-eight, ninety-five
知识讲解
基数词
用作基数词单位的 hundred, thousand, million, billion 通常不带复数词尾-s，但若用于表示数百、数千、数百万这样的泛指，则用复数。 200 two hundred 3,200 three thousand and two hundred 1, 526,200 one million, five hundred and twenty-six thousand and two hundred thousands of billions of
中考英语语法复习
数词
学习目标
基数词
序数词
数词
知识讲解
数词
one, two, three, four, five…… 数词是指表示数目多少或顺序先后的词。表示数目多少的数词叫基数词；表示顺序先后的数词叫序数词，如 first, sixth, tenth, twenty-first 等。数词用法相当于名词和形容词，在句中可用作主语、宾语、表语、定语、同位语等。

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2. __ of her money __ spent on clothes. A. Two three; are B. Two thirds; is C. Two third; is 3. __ 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
80 %
eighty percent
基数词 + percent
half / (百)分数 + of + 可数名词复数谓语动词用复数 half / (百)分数 + of + 不可数名词谓语动词用单数
3.78
three point seven eight
1. __ of the students __ boys in Class A. Two three; are B. Two thirds; are C. Two thirds; is
6．The wall is____. A．four meters long B．four meter long C．four-meter long 7．What's the date today? It's___． A．March the eight B．March eighth C．eight，March 8．It happened in the 1040's． A．． in in the the forties forties of of the the eleventh eleventh century century．． A B． in the forties of the tenth century． C． in the forty 9．About_____________ of the earth\'s surface is covered with water. A. three-fours B. three-fourth C. C. three-fourths three-fourths
Can you read them?
1:30 2:15: 3:45 6:38 7:25 9:50
one thirty two fifteen three forty-five six thirty-eight seven twenty-five nine fifty half past one a quarter / fifteen past two a quarter/ fifteen to four twenty- two to seven twenty five past seven ten to ten
1. This building is __ that building. A. three time as tall as B. twice taller than C. three times as taller as 2. 我的箱子比你的重六倍! six times heavier than yours. My box is ____________________ seven times as heavy as
专项复习
数词
Numbers
二.数词的各种表示法
一、时间的表达方式 1．直接表达法。即先读小时，再读分钟如：4：10 读成 8：36 读成
four ten
eight thirty-six
2．逆读法。即先读分钟，再读小时
①分钟小于30的用“past”，中文译为“过”。
即分钟+past+时钟，中文译为“几点过几分”
六、加减乘除表示法 1. “加”用plus，and或add表示 How much is two plus three? It is five． Two and three is equal to five． 2. “减”用 minus How much is ten minus six? 3. “乘”multiply 3X4＝? How much is three times four? 4. “除”用divide的过去分词形式表示 16÷4=? How much is sixteen divided by four?
三年半的两种表达方式: three years and a half
three and a half years
1.— It’s 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 eight
五.数词的表示法 — 年龄
① 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 ② He came to China ____. A. at the age of 20 B. when he is 20 C. at age of 20
选择填空。 1．March is ____month of a year． A． a three B． the third C． a third 2．We will have a meeting at 8:05____． A．five to eight B．eight five C C．．eight eight o o five five 3．Eight plus eight is____. A．．sixteen sixteen B．sixty-four C．one A 4．He is an ____boy． B ． eight-year-old A．eight years B ． eight-year-old C．eight-years-old 5．We will have a___ walk． A．ten minutes B．ten minutes' C．ten-minutes
分数、百分数、小数的表达方法（以分数考法较为常见）
1. 分数: 分子用基数词，分母用序数词，分子大于一，分母加s 1/2 读作 one second（a half） 2/3 读作 two thirds 或者 two- thirds 1/13 读作 one thirteenth 3/4 读作 three fourths或者three - quarters 2．小数,百分数的读法: 小数点读成point 3.6 读作 three point six 百分号% 读成 percent 50%读作 fifty percent
This box is five times as big as that one. =This box is four times bigger than that one. ① A + be + 倍数 + as +adj.原+ as +B. A是B的 …倍… ② C + be + 倍数 + adj.比+ than +D. C比 D … … 倍
如：5:10（5点过10分）读成 ten past five two past two
2:02 （2点过2分）读成
②分钟超过30（不包括30分钟）用 “to”（中文译为“差” 如：7：45 （八点差15分）读成 fifteen to eight
即“60-分钟数 +to+钟点数+1” （中文译为：几点差几分） 1：58（两点差2分）注意：一刻钟 a quarter
七、another, other, more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 1．—Have you finished your report yet？ —No，I will finish it in 10 minutes． A．another B．Other C．more D．less 2．The 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。
五.数词的表示法 — 计量
① The river is about ____. A. 6,000 meters long B. 6,000-meters-long C. 6,000-meter-long
be + 数词 + 量词 + 形容词
10. He went down to the village which was ___miles away from the city. A. three hundreds B. three three hundred hundred B. C. three hundreds of
2．more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： 1．I climbed the stairs slowly，carrying a big suitcase，my father following with two more．