课件26张PPT。Unit 2 NumbersGrammarLead-in: answer questions.1 How old are you?
I'm 13 years old.
2 What's your telephone number?
My telephone number is 27227854.
3 How many students in your class? How many students in your grade?
There are 52 students in my class and about 310 students in our grade.
4 In which year were you born?
In 1999/ 2000/2001.
以上的数字都是基数词(cardinal numbers).A. Do you know! Cardinal numbers1
2
3
4
5
6
7
817
18
19
2011
12
13
14
15
169
10
30
40
52
85
98one
two
three
four
five
six
seven
eightnine
teneleven
tweleve
thirteen
fourteen
fifteen
sixteenseventeen
eighteen
nineteen
twenty
thirty
forty
fifty-two
eighty-five
ninety-eight基数词的构成1)1-12, 独立成词。
one two three four five six seven eight nine ten eleven twelve
2)13--19, 由3-9 + teen构成。
14–fourteen 16--sixteen 17--seventeen 19—nineteen
特殊拼写: 13– thirteen 15--fifteen 18—eighteen
3)20-90, 以-ty结尾。
20—twenty 30---thirty 40—forty 50—fifty 80---eighty
60---sixty 70---seventy 90—ninety
4)21-99, 两位数,十位与个位之间有 “-”。
21 twenty—one 55 fifty—five 99 ninety—nine
Let’s play a game: 报数Say numbers one by one according to the seat order.
按照座位顺序一个接一个报数。报错数的同学站着,并要在小组得分上扣一分。100375200one hundredtwo hundredthree hundred and seventy-five642958236six hundred and forty-twonine hundred and fifty-eighttwo hundred and thirty-six5)101—999,三位数,百位与十位/个位之间加and。
101 one hundred and one
840 eight hundred and forty
693 six hundred and ninety-three29,43150076,,thousandhundredmillionbillionand6) 1,000以上数目,从右向左每三位用“,”
分开,分别读为thousand , million, billion 基数词的构成Read the following numbers.2,53425,342253,4232,534,233two thousand five hundred and thirty-fourtwenty-five thousand three hundred and forty-twotwo hundred and fifty-three thousand four hundred and twenty-threetwo million five hundred and thirty-four thousand two hundred and thirty-three534five hundred and thirty-four2,250,342,330two billion two hundred and fifty million three hundred and forty-two thousand three hundred and thirtyA. let's read it.100015,3624,189one thousandfour thousand one hundred and eighty-ninefifteen thousand three hundred and sixty-two100,000285,643one hundred thousandtwo hundred and fifty-eight thousand
six hundred and forty-threeA. Cardinal and ordinal numbers1,000,0003,367,982one millionthree million three hundred and sixty-seven thousand nine hundred and eighty-twoWork out the ruleIn the cardinal numbers, we do not add -s to hundred, ________ and ________.
With large numbers, we put ________
between hundred and ten.thousandmillionand注意:
表示具体、准确的数目时,hundred, thousand, million等数词后不能加-s, 如five hundred, six thousand, seven million等。
当hundred, thousand等数词与of连用,表示不具体、不准确的数目时,词尾须加-s。如: thousands of students, millions of trees.1、 “几十”的复数形式可以表示:
几十多岁 ---- in + one’s + 数词复数
年 代 ---- in + the +数词复数
1) He died in his forties.四十多岁
2) In the nineties, most people go to work by bike.
90年代2、“基数词+名词” 的合成形容词作定语,
中间有连字符“-”,当中的名词用单数。
a 3 – year – old girl a seven-day holiday 3、表计量-- “基数词+度量单位+形容词”
The classroom is 7 meters long, 6 meters wide
and 3 meters high.基数词的用法A. Cardinal and ordinal numbers1st
2nd
3rd
4th
5th
6th
7th
8th17th
18th
19th
20th11th
12th
13th
14th
15th
16th9th
10th
21st
33rd
40th
100thfirst
second
third
fourth
fifth
sixth
seventh
eighthninth
tentheleventh
twelfth
thirteenth
fourteenth
fifteenth
sixteenthseventeenth
eighteenth
nineteenth
twentieth
twenty-first
thirty-third
fortiety
hundredth序数词的构成1) 1-3, first, second, third 。
2) 4-19, 相应基数词+th,
特殊拼写:fifth, eighth, ninth, twelfth。
3) 20-90, y变成ie +th,如twentieth。
4) 21-99, 只把个位的基数词变成序数词
如twenty-first。
5) 序数词缩写----数字+最后两字母
如1st, 2nd, 3rd ,4th…基变序,有规律,
一、二、三,特殊记,面目全非要注意,
加th从4起,
八少“t”,九去“e”,
“ve”要用“f”替,(five, twelve)
见“y”变成“i”和“e”,词尾加上“th”,
(twenty, thirty,……ninety)
若是遇到几十几,只变个位就可以。
序数词缩写记清楚,数字后跟两字母。(序数词构成规律)Work out the ruleWe form most ordinal numbers by adding _______to the cardinal numbers. There are exceptions, like first, second and third.thPractice makes perfect!1
(2)____
3
4
12
(6)____
23
28May
Alan
Danny
Jane
Peter
Alice
Steve
ZoeMay is the(1)_______.
Alan is the second.
Danny is the(3) _____.
Jane is the (4)______.
Peter is the(5) ______.
Alice is the nineteenth.
Seveve is the(7) ______.
Zoe is the(8) _______. firstthirdfourthtwelfthtwenty-thirdtwenty-eighth219序数词前加定冠词the1999 nineteen ninety-nine
two thousand and eight
1949年10月1日 读作:
October (the) first, nineteen forty-nine (月-日,年)
the first of October, nineteen forty-nine(日-月,年)
写作: October 1st,1999(日用缩写,月-日-年)
October 1, 1999 (日用数字)
1st October,1999日-月,年年份、日期表达法年用基数词表示,两位一读,介词用in
日用序数词表示,介词用on 表示“在…世纪”, 用序数词。
在20世纪 写作:in 20th century
读作:in the twentieth century 常考点,易错点第1单元, 第5课
Unit1 / the first unit/
Lesson Five / the fifth lesson
302 号房
Room 302
9个生日,第9个生日, 我的第9个生日
nine parties,
the ninth party,
my ninth partyMake a dialogue:talk about the birthdaysBetty--2 January
David- 30 September
Cindy-- 16 June
Alan--3 March
Jay-- 22May
Sam --12 October
A: When is Betty's birthday?
B: It is on the second of January/ January the second.
A: Is Betty's birthday on the the twelfth of January?
B: No. It's on the second of January.B. Instruction about numbers3+9
9-3
3*9
9/3Add 3 and 9
Subtract 3 from 9
Multiply 3 by 9
Divide 9 by 3 3 plus 9 equals/is 12.
9 minus 3 equals/is 6.
3 multiplied by 9 equals/is 27.
9 divided by 3 equals/is 3.3+9=12
9-3=6
3*9=27
9/3=3add,substract, multiply 和 divide都是动词。 plus and minus 都是介词add … and …subtract … from …Read the instructions aloud.B. Instruction about numbers1. S1: Add 11 and 1.
S2: 11 plus 1 equals/is 12. (11+1=12)2. S1: S_________5______13
S2: ______ m______ ____ equals/is______.
( )
3. S1: M______ 7 _______8.
S2:____m________by __equals/is ___.
( )
ubtractfrom13inus5813-5+8ultiplyby7ultiplied8567*8=564. S1: D_____16______4.
S2: ___d______ by___ equals/is_____.
( )
5. S1: A______ 9 _______6.
S2:____p_____ ___equals/is _______.
( )
6. S1:A__ 14 and 4 and d_____the answer by 2.
S2:__p ___ __ and d ______the answer by __
equals/is _____.
( )ivideby16ivided4416/4=4ddand9lus6159+6=15ddivid14lus4ivided29(14+4)/2=9Competition! 全班分为两大组,开展加减乘除对抗赛。由A组向B组提问5道题,例如:72÷9= ?, B组回答,然后再交换。注意题目不要太难,如果自己都回答不上来,出题人会被扣分。