1. 2 Numbers Unit Period 4 Module 1 Amazing things Grammar Speak up
Oxford English
Oxford English
Unit 2
Module 1 Amazing things
Numbers
Period 4
Grammar
Speak up

2. The king put two grains on the second square.1
Cardinal numbers
Read the numbers aloud.
The king put two grains on the second square.
We use cardinal numbers to count things.

3. We use cardinal numbers to count things.

4. • In the cardinal numbers, we do not add -s to hundred,
Complete “Work out the rule”.
• In the cardinal numbers, we do not add -s to hundred,
___________ and ______________ .
• With large numbers, we put ______________ between
hundred and ten.
thousand
million
and

5. 2,534 25,342 253,423 2,534,233 25,342,330 Read the following numbers.
two thousand five hundred and thirty-four
25,342
twenty-five thousand three hundred and forty-two
two hundred and fifty-three thousand four hundred and twenty-three
253,423
2,534,233
two million five hundred and thirty-four thousand two hundred and thirty-three
twenty-five million three hundred and forty-two thousand three hundred and thirty
25,342,330

6. 2 Ordinal numbers The king put two grains on the second square.
Read the numbers aloud.
The king put two grains on the second square.
Our flat is on the sixth floor.
We use ordinal numbers to show the order of things.
We form most ordinal numbers by adding __________ to the cardinal numbers. There are exceptions, like first, second and third.
-th

7. The students are standing in a line
The students are standing in a line. They each have a number (from 1 to 28). Fill in the blanks with cardinal numbers on the left and ordinal numbers on the right.
first 2
third
fourth
twelfth 19
twenty-third
twenty-eighth

8. 3 Instructions about numbers add … and … multiply … by… divide … by …
//
add … and …
//
subtract … from …
//
multiply … by…
//
divide … by …

9. 2+10 10-2 210 10÷2 Add 2 and 10. Subtract 2 from 10.
Read the instructions aloud.
2+10
Add 2 and 10.
10-2
Subtract 2 from 10.
210
Multiply 2 by 10.
10÷2
Divide 10 by 2.

10. 4 Instructions about numbers We can use equals or is to express “=”.
//
//
Things to remember
Plus and minus are prepositions.

11. 2+10 = 12 10-2 = 8 2  10 = 20 10÷2 = 5 2 plus 10 equals/is 12.
Read the statements aloud.
2+10 = 12
2 plus 10 equals/is 12.
10-2 = 8
10 minus 2 equals/is 8.
2  10 = 20
2 multiplied by 10 equals/is 20.
10÷2 = 5
10 divided by 2 equals/is 5.

12. Instructions about numbers
In pairs, complete the sentences like those in Table I and Table II.
1 S1: A________ 11 ______ 1.
S2: ______ p______ ______ equals/is ______. ( )
2 S1: S________ 5 ______ 13.
S2: ______ m________ ______ equals/is ______. ( )
3 S1: M________ 7 ______ 8.
S2: ____ m________ by ______ equals/is ______. ( )
4 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 the answer d______ by
______ equals/is ______. ( ) dd
and 11
lus 1 12
11+1=12
ubtract
from 13
inus 5 8
13-5=8
ultiply by 7
ultiplied 8 56
7×8=56
ivide by 16
ivided 4 4
16÷4=4 dd
and 9
lus 6 15
9+6=15 dd
ivide 14
lus 4
ivided 2 9
(14+4)÷2=9

13. 5
Speak up
Mandy did not copy her homework correctly, so she called Joyce. In pairs, check the Maths problems in Mandy’s exercise book. Follow the example.

14. Things to remember
When we make a phone call, we don’t use “I am …” or “Are you …”. We use “This is …” and “Is that …”

15. Joyce: Hello, this is Joyce speaking. Mandy: Hello, Joyce. It’s Mandy.
Mandy did not copy her homework correctly, so she called Joyce. In pairs, check the Maths problems in Mandy’s exercise book. Follow the example.
Joyce: Hello, this is Joyce speaking.
Mandy: Hello, Joyce. It’s Mandy.
Joyce: Hi, Mandy. What can I do for you?
Mandy: I don’t think I copied down the Maths problems
correctly. Can I check them with you?
Joyce: OK.
Mandy: Number 1. Is it seventy-two plus twenty-seven?
Joyce: No. It should be seventy-two plus two hundred
and seventy-two.
...
/3kBpi/
/kə'rekti/
/Tek/

16. H Homework 模仿录音的语音、语调，与同学操练对话。
完成《英语（八年级 上册）B》第19至21页Grammar和第24页Speaking B的练习。