课件29张PPT。What can we use numbers to do?What is the widely used system of numbers?What does the Hindu-Arabic system of numbers include?Grammar To learn cardinal and ordinal numbers, and instructions about numbers.NUMBERSWe use cardinal numbers to show amounts.1
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
twelve
thirteen
fourteen
fifteen
sixteenseventeen
eighteen
nineteen
twenty
thirty
forty
fifty-two
eighty-five
ninety-eight100375200one hundredtwo hundredthree hundred and seventy-five642six hundred and forty-two100015,3624189four thousand one hundred and eighty-ninefifteen thousand three hundred and sixty-twoone thousand100,000285,643one hundred thousandtwo hundred and eighty-five thousand
six hundred and forty-three1,000,0003,367,982one millionthree million three hundred and sixty-seven thousand nine hundred and eighty-twoIn the cardinal numbers, we do not add
-s to hundred, __________ and ________.
thousandmillionmore than two hundred studentsaround ten thousand dollarshundreds of
thousands of
millions of12345678910642958236six hundred and forty-twonine hundred and fifty-eighttwo hundred and thirty-six0.25
15.17
17.08
28.59 (zero) point two five
fifteen point one seven
seventeen point o eight
twenty-eight point five nine
27%
100%
67%
twenty-seven per cent
one hundred per cent
sixty-seven per cent
11 Dec. 2008
the eleventh of December, two thousand and eight
1 Oct. 1949
18 Sept. 1931
31 Aug. 2016
8:00
7:30
9:50 eight o'clock
half past seven
ten to ten
10:15
12:10
11:45 fifteen/ a quarter past ten
ten past twelve
fifteen/a quarter to twelve
six o'clock
nineteen past eleven
one o'clock
thirteen to six
341 2205
three four one, double two zero five
/ three four one, two two o five
2833 8322
18948789608
1010048126Listening 1. a 65 b 36 c 33
2. a 12:13 b 12:30 c 12:40
3. a 11 October b 10 November
c 11 November
4. a 565 3881 b 566 2881 c 562 2881
5. a 165.5 cm b 135 cm c 116.5 cm
6. a 4,700 b 7,400 c 4,070
7. a 11% b 31% c 21%
8. a 33 b 22 c 32Listen to a quiz about numbers and circle the correct answers.○○○○○○○○12 _____ 18 ________ 20 ________
30 _____ 47____________ 59 ________ 83 ___________ 100 _____________
598 __________________________
960 ______________________
2,008 ____________________
5,160 _________________________
11, 000,000 ___________________
8, 000, 000, 000 ___________ twelve eighteen twenty thirty forty-seven fifty-nine eighty-three one(a) hundred five hundred and ninety-eight nine hundred and sixty two thousand and eight five thousand one hundred and sixty eleven million eight billion11 _____ 18 ________
23 ________ 37 _________ 46____________ 99 ________
108 __________________________
15,862 ________________________________________________________________________
12,000,000 ____________________
eleven eighteen twenty-three thirty-seven and sixty-two forty-six ninety-nine one hundred and eight fifteen thousand eight hundred twelve millionI spent five hundred dollars buying this Apple Watch.thousands of millions ofI spent hundreds of dollars buying this Apple Watch. He is in his thirties.
She died in her forties.
This event took place in the early 1930s.
表示“……十”的数词的复数形式可用来表示人的岁数或年代。
We use ordinal numbers to show order. five floors the fourth floor the first floor the third floor1st
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
hundredthone third
two thirds
one fourth
three fourths
a half
a quarter
three quarters
the second unit
the fifth page
the fourth class
Unit Two
Page Five
Class Four
Room B401
Bus No. 80
1st
2nd
3rd
4th
5th
8th
9th
12th20th
33rd
40th
100th
1/3
2/3
1/4
1/23+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=3If you add... to/ and ...
subtract...from..
multiply... by...
divide...by...
you can /will get...
1. 8＋7
Add 8 and 7.
2. 19－11
Subtract 11 from 19.
3. 13＋7＝20
13 plus 7 is/equals 20.
4. 10×3＝30
10 multiplied by 3 is/equals 30.
5. 36÷6≡6
36 divided by 6 is/equals 6. Practise
