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Unit2 Amazing numbers
Section2 Grammar 語法優質課
滬教版（2024）八年級
上
Learning objectives
1
Lead in
Cardinal numbers
3
Practice
Ordinal number
5
Practice
Assessment
7
Homework
2
4
6
8
By the end of the lesson, I will be able to...
1
2
3
4
Master reading and writing of cardinal & ordinal numbers.
use cardinal numbers for quantity and ordinal numbers for order
Describe river lengths and mountain heights with these numbers.
Improve English communication about numerical info.
00
Learning objectives
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What number is this
1/16
twelve
twenty
NEXT
What number is this
2/16
eighty
eighteen
NEXT
What number is this
3/16
fourteen
forty
NEXT
What number is this
4/16
seventy
seventeen
NEXT
What number is this
5/16
sixteen
sixty
NEXT
What number is this
6/16
seventeen
seventy
NEXT
What number is this
7/16
fifty
fifteen
NEXT
What number is this
8/16
eighteen
eighty
NEXT
What number is this
9/16
twenty
twelve
NEXT
What number is this
10/16
fifteen
fifty
NEXT
What number is this
11/16
forty
fourteen
NEXT
What number is this
12/16
nineteen
ninety
NEXT
What number is this
13/16
thirty
thirteen
NEXT
What number is this
14/16
sixty
sixteen
NEXT
What number is this
15/16
thirteen
thirty
NEXT
What number is this
16/16
ninety
nineteen
EXIT
cardinal Numbers
基數詞
04
We use cardinal numbers to count things.
11 eleven 15 fifteen 20 twenty 82 eighty-two
12 twelve 18 eighteen 50 fifty 98 ninety-eight
100 one hundred 385 three hundred and seventy-five
1,000 one thousand 100,000 one hundred thousand
4,189 four thousand one hundred and eighty-nine
1,000,000
2,000,000
1,000,000,000
3,000,000,000
one million
two million
one billion
three billion
A Cardinal numbers
一、基數詞的概念
We use cardinal numbers to count things.
1. People from about 180 countries and areas live
in New York.
2. The CN Tower is 1,815 feet tall.
3. Red Square in Moscow is about 91,000 square
metres in size.
4. France has an area of over 26,000 square miles.
5. There are about 8,000,000 people living in
London.
6. Tokyo, the capital of Japan, has over 13,000,000
people.
0～12為基本單詞：
zero one two three four
five six seven eight nine
ten eleven twelve
13～19為對應的個位數單詞(或變形)后加-teen：
thirteen fourteen fifteen sixteen
seventeen eighteen nineteen
二、基數詞的構成
3 three 13 thirteen
11 eleven 15 fifteen
12 twelve 18 eighteen
20～90為其對應個位數單詞(或變形)后加-ty：
twenty thirty forty fifty sixty
seventy eighty ninety
21～99的兩位數，十位與個位之間用連字符“-”：
26 twenty-six 99 ninety-nine
When we say thirteen, we stress the second syllable. When we say thirty, we stress the first syllable.
20 twenty 70 seventy
30 thirty 82 eighty-two
50 fifty 98 ninety-eight
100 one hundred
200 two hundred
375 three hundred and seventy-five
101～999的三位數，百位數和十位數（若無十位數則和個位數）之間用and連接，百后用單數形式：
103 a/one hundred and three
225 two hundred and twenty-five
999 nine hundred and ninety-nine
多位數：
注意每三個數為一個單位，按照百、十、個向下讀。
6
,
500
,
431
,
729
billion
million
thousand
seven hundred and twenty-nine
six billion,
five hundred million,
four hundred and thirty-one thousand,
在英語中，對于萬以上的數字，我們該如何表達呢？這就要記住英語數字讀法特點。以下面一個數字為例：
用英語寫出下列數字
44
85
101
443
2002
3，654
78,542,650
forty-four
eighty-five
one hundred and one
four hundred and forty-three
two thousand and two
three thousand six hundred and fifty-four
seventy-eight million five hundred and forty-two thousand six hundred and fifty
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
(1)時刻、年份的讀法
8:20
10:30
11:40
2000
2021
twenty past eight
eight twenty
ten thirty
half past ten
eleven forty
twenty to twelve
two thousand
twenty twenty-one
三、基數詞的用法
(2) 表示年齡：
數字+year(s)+old
1歲
90歲
one year old
ninety years old
數字-year-old+名詞 (只可做定語)
一個3歲的男孩
一個五天的假期
一段15分鐘的路程
a three-year-old boy
a five-day holiday
a fifteen-minute walk
(3) 表示年代：in the +整十復數(ies)
在60年代
在90年代
在20世紀90年代
in the sixties
in the nineties
in the 1990s
(4) 表示幾十多歲：in one’s +整十復數(ies)
在他80多歲時
在我20多歲時
in his eighties
in my twenties
(5)公交線路編號、房間號及電話號碼的讀法
規則:名+數(均大寫)
211路公交車
702號房
8年級
12班
第五十頁
寫法
Bus No. 14
Room 702
Grade 8
Class 12
Page 50
讀法
Bus No. Fourteen
Room Seven Zero Two
Grade Eight
Class Twelve
Page Fifty
4,056
= four thousand and fifty-six
23,813
= twenty-three thousand eight hundred and thirteen
567,110
= five hundred and sixty-seven thousand one hundred and ten
6,425,200
= six million four hundred and twenty-five thousand two hundred
How do we say the following numbers
ORDINAL
NUMBERS
0
1 st
FIRST
2 nd
SECOND
3 rd
THIRD
FOURTH
4 th
5 th
FIFTH
6 th
SIXTH
9 th
NINTH
10 th
TENTH
11 th
ELEVENTH
12 th
TWELFTH
13 th
THIRTEENTH
15 th
FIFTEENTH
16 th
SIXTEENTH
SEVENTEENTH
17 th
18 th
EIGHTEENTH
19 th
NINETEENTH
20 th
TWENTIETH
21 st
TWENTY-FIRST
22 nd
TWENTY-SECOND
30 th
THIRTIETH
1
2
3
4
5
6
7
8
9
10
11
12
Help me, please! I’m going to the third floor
3 rd
third
Thank you!
1
2
5
4
3
6
7
8
9
10
11
12
I’m going to the fifth floor
5 th
fifth
Thank you!
1
2
9
4
3
6
7
8
5
10
11
12
I’m going to the ninth floor
9 th
ninth
Thank you!
1
9
2
4
3
6
7
8
5
10
11
12
I’m going to the second floor
2 nd
second
Thank you!
2
9
1
4
3
6
7
8
5
10
11
12
I’m going to the first floor
1 st
first
Thank you!
2
9
12
4
3
6
7
8
5
10
11
1
We’re going to the twelfth floor
12 th
twelfth
Thank you!
What floor are we on

ordinal numbers 序數詞
Learn the numbers and find out the rules.
We use ordinal numbers to show the order of things.
一、序數詞的概念：
Women's Day is on the eighth of March.
Our flat is on the seventh floor.
He is always the first to come to the school in our class.
1) 一般來說，是由相應的基數詞加詞尾th構成。
◇ four + th
◇ seven + th
◇ ten + th
2) 有些基數詞在變為序數詞時，有特殊的變化。
◇ one ◇ two
◇ three ◇ five
◇ eight ◇ nine
◇ twelve
→ fourth
→ seventh
→ tenth
→ first
→ third
→ eighth
→ twelfth
→ second
→ fifth
→ ninth
二、序數詞的構成
3) 十位整數序數詞的構成方法是將基數詞的詞尾y變成i，然后再加eth。
◇ twenty
◇ thirty
→ twentieth
→ thirtieth
◇ twenty-one
◇ thirty-five
◇ a hundred and fifty-three
4) 兩位或兩位以上的基數詞變成序數詞時，僅將個位數變成序數詞。
→ twenty-first
→ thirty-fifth
→ a hundred and fifty-third
◇ forty
◇ ninety
→ fortieth
→ ninetieth
1) 序數詞前面通常要加定冠詞the，但當序數詞作定語修飾名詞且前面有形容詞性物主代詞或名詞所有格時，the可以省略。
三、序數詞的用法
Take the first right.
My first teacher
Lily's third boyfriend
我的第一個老師
莉莉的第三個男朋友
在第一個路口向右拐。
2) 日期可以用基數詞或序數詞來表示。讀時前面要加定冠詞the，日期前面要用介詞on。
在6月1日
3) 編號可以用基數詞或序數詞來表示。序數詞位于名詞之前，前面要加定冠詞the，而基數詞位于名詞之后，且名詞和基數詞的首字母都要大寫。
the second part = Part Two
on June 1 / on June 1st
讀作 on June the first
The students are standing in a line. They each have a number (from 1 to 28). Fill in the blanks with the cardinal numbers on the left or ordinal numbers on the right.
2
first
third
fourth
twelfth
19
twenty-third
twenty-eighth
Work out the rule
We form most ordinal numbers by adding ____ to the cardinal numbers. There are exceptions, like first, second and third.
-th
基變序，有規律，詞尾加上th。一二三特殊記，詞尾字母t,d,d。八加h，九減e，ve要用f替。ty要變tie，然后再加th。若是遇上幾十幾，只變個位就可以。
1 Look at the information about the three longest rivers in the world. Take turns asking and answering questions about the rivers.
S1: Which is the first-longest river in the world
Where is it How long is It
S2: The Nile River is the first-longest river; It’s in Africa. It’s about 6,671 km long.
S1: Which is the second-longest river in the world Where is it
How long is It
S2: The Amazon River is the second-longest river, It’s in South America.
It’s about 6,480 km long.
S1: Which is the third-longest river in the world
Where is it How long is It
S2: The Yangtze River is the third-longest river, It’s in Asia. It’s about 6,300 km long.
2 Look at the list of the highest mountains in Asia, North America and Africa Describe the mountains with cardinal and ordinal numbers.
Rank Name Height Continent
1 Mt. Qomolangma 8,848.86 m Asia
2 Mt. Qogir 8,611 m Asia
3 Mt. Kanchenjunga 8,586 m Asia
The tallest mountain in Asia is Mountain QomolangmaIt is 8,848.86 metres high
Mountain Qogir is the second-highest in Asia. It is 8,611 metres high. Mountain Kanchenjunga is the third highest in Asia. It is 8,586 metres high.
Rank Name Height Continent
1 Mt. Denali 6,190 m North America
2 Mt. Logan 5,959 m North America
3 Pico de Orizaba 5,610 m North America
The tallest mountain in North America is Mountain Denali.
It is 6,190 metres high
Mountain Logan is the second-highest in North America.
It is 5,959 metres high. Pico de Orizaba is the third highest in North America.
It is 5,610 metres high.
The tallest mountain in Africa is Mountain Kilimanjaro. It is 5,895 metres high.
Mountain Kenya is the second-highest in Africa. It is 5,199 metres high. Mountain Stanley is the third highest in Africa. It is 5,109 metres high.
Rank Name Height Continent
1 Mt. Kilimanjaro 5,895 m Africa
2 Mt. Kenya 5,199 m Africa
3 Mt. Stanley 5,109 m Africa
Assessment
08
Self-assessment
I can acquire expressions related to team activities through watching and listening activities.
I can share experiences of team activities in real - life contexts.
I can understand and recognize the importance of collaborative cooperation in team activities.
Basic (基礎)
Improving(提升)
Extend (拓展)
Homework
09
默寫基數詞（1-100）及對應的序數詞，然后大聲朗讀 。
熟記基數詞和序數詞的用法， 完成習題。
用基數詞和序數詞，以完整句子描述教材里尼羅河、亞馬遜河、長江這三條河流的長度，以及材料中 3 座山脈的高度 。
熟記基數詞和序數詞的用法， 完成習題。
找一條（或一座）教材外的河流（或山脈），查詢其長度（或高度），用基數詞和序數詞寫一小段英文介紹它 。
熟記基數詞和序數詞的用法， 完成習題。
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