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(共25张PPT)
Unit 2 Amazing numbers
主题范畴：
人与社会
主题群：
历史、社会与文化；科学与技术
子主题：
对世界、国家、人民和社会进步有突出贡献的人物；科学技术与工程，人类发明与创新
Key question
What is the role of numbers in our daily lives
improve my listening comprehensive skills;
identify and understand key details in the conversation;
record and present information with numbers in English.
Learning objectives 学习目标
At the end of the class, I’ll be able to:
per cent /p sent/ n. 百分之……
currently / k r ntli/ adv. 目前；当前
New words
Can you read the following numbers correctly
1:15
27%
0.25
17.17
341 2205
11 Jan. 2022
Lead-in
Section 1 Experiencing and understanding language
0.25 (zero) point two five
17.17 seventeen point one seven
Read the numbers.
26.23
48.48
twenty-six point two three
forty-eight point four eight
Top tip: point [c] n. 小数点
Observe and learn
分数的朗读规则：
分数表达: 分子用基数词，分母用序数词。
当分子大于1时，分母用复数。
Observe and learn
one fifth
two thirds
Read the numbers.
三分之一
五分之三
one third
three fifths
27% twenty-seven per cent
0.5% zero point five per cent
Top tip:
per cent n.〔用单数〕百分之……
Read the numbers.
33%
100%
thirty-three per cent
one hundred per cent
Observe and learn
1990 nineteen ninety
1900 nineteen hundred
1908 nineteen o eight
2016 two thousand and
sixteen
年份的读法：
1. 一般将年份的四个数字按前后分为两组，每一组的数字都按基数词来读。
2. 如果是整百的年，后面的两个“零”读为 hundred。
3. 十位数字上为“零”，该“零”读为字母O的发音。
4. 如果是千年，按千位数读。
Observe and learn
11 Dec. 2008
the eleventh of December, two thousand and eight
日期的读法：
6月20日
[AE]写作：June 20或June 20th
读作：June the twentieth
[BE]写作：20 June或20th June
读作：the twentieth of June
Observe and learn
3:00 three o’clock
6:30 half past six
1:15 (a) quarter past one/one fifteen
6:50 ten to seven/six fifty
时间表达法：
整点： 时+o’clock
半点： half past+时
小于30分： 分+past+时
大于30分： (60-分)+to+(时+1)
Observe and learn
341 2205
three four one, double two zero five
three four one, two two o five
电话号码的朗读规则：
电话号码中的每个数字要分开朗读。
数字“0”可以读作字母“o”，也可读作zero。
若前后两个数字相同，这个数字应念两遍，或读作“double+数字”。
Observe and learn
Listen to a quiz about numbers and circle the correct answers.
1 a 65 2 a 12:13 3 a 11 October
b 36 b 12:30 b 10 November
c 33 c 12:40 c 11 November
4 a 565 3881 5 a 165.5 cm 6 a ￥4,700
b 566 2881 b 135 cm b ￥7,400
c 562 2881 c 116.5 cm c ￥4,070
7 a 11% 8 a 33
b 31% b 22
c 21% c 32
Practice
Pre-listening
The world’s countries and population
Discuss the questions below in pairs.
(1) What is the population of the world now
(2) Can you name the three largest cities in the world by population
Ellie and Ann are talking about countries and population around the world. Listen to the conversation and choose the correct answers.
Listening
(1) What’s the world’s population according to the conversation
a about 8 billion b about 10 billion
c about 13 billion
(2) How many people will there be in the world in 2100
a more than 9 billion b more than 10 billion
c more than 12 billion


Tips:
pay attention to the numbers.
(3) What per cent of the world’s population currently live in Asia
a a bit over 30%
b less than 50%
c about 60%
(4) Which of the following cities is discussed in the conversation
a Shanghai
b Shenzhen
c Beijing


What does Ann mean when she says “the number keeps changing”
Listen again and answer the question below.
The current number might be out of date soon.
Imagine that you are working on a project about the population of different countries around the world, What methods are you going to use to find the information How will you record and present the information you collect
Post-listening
Useful expressions:
I was born on ....
I am ... years old/tall.
My weight/height is ....
My home is nearly ... miles away from school.
I go to school at ... and get back home at ....
My phone number is ....
...
Work in pairs and introduce yourself to each other. Use as many numbers as possible.
Tape script
Ann: Hi Ellie, have you thought about our project on different countries and people around the world Any ideas so far
Ellie: Of course. I’ve already written down some questions for the project. Let’s look up the answers online!
Ann: Sounds good. I’m free to do it now. What questions do you have
Ellie: OK, here’s my first question. How many countries are there in the world
Ann: Almost 200 countries.
Ellie: How many people are there in the world
Ann: The number keeps changing. A report from 2022 shows that there are around 8 billion.
Ellie: Got it. It’s obvious that the world population is still growing.
Ann: Yes, indeed. The United Nations believes the world population will be larger than 10 billion by 2100.
Ellie: Wow. That’s huge. Where do most people live, then
Ann: Asia is the most populous continent. Almost two-thirds of the world’s population live in Asia. Currently, the world’s three most populous countries are India, China and the USA.
Ellie: Good. Just curious: which are the most populous cities in the world
Ann: Well, according to the latest data, the three most populous cities are Tokyo in Japan, Delhi in India, and Shanghai in China.
Ellie: Noted. Let’s make sure to include the correct information in our project.
per cent
currently
more than/over
less than
in different ways
Dictation
百分之……
目前；当前
超过
少于
以不同的方式
1. about 8 billion
about adv. 大约
词汇拓展
hundred num. 百
thousand num. 千
million num. 一百万
billion num. 十亿
trillion num. 万亿
Language points
2. more than 9 billion; less than 50%.
① more than = over 超过
如： 教室里有十多个学生。
There are more than ten students in the classroom.
= There are over ten students in the classroom.
反义词组为less than 。
如：我有不到10本书。
I have less than ten books.
根据中文意思完成句子。
1. 他在那里待了超过半年。
He stayed there ________________ half a year.
2. 我们无法在一周内完成任务。
We can not finish the task in _________ a week.
more than / over
less than
Write a short article about yourself and use as many numbers as possible.
Finish the exercises.
Preview Grammar on page 25.

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