资源简介

(共38张PPT)
（人教新版）八年级
下
Section A 1a-1d
The Wonders of Nature
Unit4
01
02
03
04
正确认读关于自然奇观的地理类词汇，感知描述自然景观特征的词汇用法。
能够模仿听力录音，与同伴就地理之最的话题开展对话，并尝试用大数字准确描述这些自然景观的面积、高度、深度。
通过讨论和合作交流，理解自然奇观的独特价值，能够主动分享自己熟知的自然奇观信息，并认同探索和保护自然的重要性。
能够听辨出描述不同“地理之最”的形容词最高级和大数字，在语境中巩固形容词最高级的用法，并熟悉大数字的表达。
Learning objectives
、
Unit Objectives
In this unit, you will
1. talk about geography facts about natural wonders.
2. compare facts about famous places.
3. share geography facts using large numbers.
4. explore how and why people connect with nature.
本单元以“自然景观”为主题，通过地理游戏节目、深海研究问答、日常对话、说明文、广告、项目任务“设计一张自然奇观海报”及拓展阅读等多种形式，围绕“我们如何与大自然建立联系？”这一大问题展开。单元内容旨在引导学生了解世界及中国的著名自然奇观，掌握描述地理特征、比较事物、表达大数字的语言知识，同时培养探索精神、环保意识和敬畏自然的情感。
、
1.Do you know the name of the waterfall in the photo
The waterfall in the photo is Victoria Falls.
It’s special for its immense width (about 1,708 meters) and height (about 108 meters), creating a breathtaking scene.
2.What do you think is special about it
3.What other natural wonders do you know
Examples: Mount Huangshan, Huangguoshu Waterfall, Zhangye Danxia Landform.
Look and share
、
Let’s watch and think.
Let’s know about the top of the world.
Warming-up
、
Q1: What is the highest
mountain in the world
Mount Qomolangma
/ t m lɑ m /
How much do you know about the world
珠穆朗玛峰简称珠峰，岩面高程8844.43米， 雪面高程8848.86米， 是喜马拉雅山脉中的主峰。由于亚欧板块和印度板块边缘的冲撞挤压，使喜马拉雅山地区猛烈抬升，据测算，平均每一万年大约升高20—30米，直至如今，喜马拉雅山区仍处在不断上升之中，每100年上升7厘米。
、
Qomolangma
the top of the mountain
height
sea
sea level （海平面）
It’s ________ meters high.
8,848.86
height
(高度)
/ha t/
eight thousand,
eight hundred
and forty-eight
point eight six
、
Nile River
/na l/
How much do you know about the world
Q2: What is the longest river
in the world
尼罗河是一条流经非洲东部与北部的河流，与中非地区的刚果河以及西非地区的尼日尔河并列非洲最大的三个河流系统。全长6650千米，是世界上最长的河流，流域面积334.9万平方千米。 占据非洲大陆总面积超过1/9。河口区域年均流经的水量大约为810亿立方米。
、
the longest river in the world
Length: 6671 kilometers
the second longest river in the world
Length: 6400 kilometers
The Nile
The Amazon
length
(长度)
/le θ/
It’s ________ kilometers long.
6671
six thousand,
six hundred
and seventy-one
、
Dead sea
How much do you know about the world
Q3:What is the lowest place on Earth
死海是世界上最低的湖泊，也是地球上盐分居第三位的水体。截至2019年，死海表面积为605平方千米。 死海的湖岸是地球上已露出陆地的最低点，湖面海拔-430.5米。湖最深处380.29米，最深处湖床海拔-800.112米，有“世界的肚脐”之称。
"There is a place where you CANNOT sink. You can read a newspaper while floating on your back!"
It’s _____metres below sea level.
416
sea level （海平面）
four hundred and sixteen
、
Sahara Desert
/s hɑ r dez t/
How much do you know about the world
Q4:What is the biggest desert
in the world
/ dez t /
撒哈拉沙漠位于非洲大陆北部，是世界上最大的沙漠。它西起大西洋沿岸，向东经过埃及到达红海之滨，长5600千米，南北宽2000千米，总面积约932万平方千米，横跨北非诸多国家。其平均海拔300余米，主要由一条条平行排列的沙垄沙漠所组成。
、
The Sahara
China
Area: about 9,600,000
square kilometers
the biggest dessert in the world
It’s about ________ square kilometers in size.
9320000
area
(面积)
nine million
three hundred and twenty-two thousand
、
Angel Falls / e n.d l f lz/
How much do you know about the world
Q5:What is the highest fall
in the world
安赫尔瀑布位于委内瑞拉玻利瓦尔州圭亚那高原的卡罗尼河支流丘伦河上，是世界落差最大瀑布 。丘伦河水从平顶高原奥扬特普伊山直流而下而形成瀑布，分为两级，总落差979米，以离丘伦河谷地172米的分结晶岩平台为界，其上为长的一级，高达807米。
"There is a waterfall so tall that the water turns into mist before it even reaches the ground. It's like a river falling from the clouds!"
It’s _____metres high.
979
nine hundred and seventy-nine
、
Mariana Trench
/ meri n trent /
How much do you know about the world
Q6:where’s the deepest point in the ocean
马里亚纳海沟全长2550千米，为弧形，平均宽70千米。据估计这条海沟已形成6000万年。其最深处的地方达6~11千米，是已知的海洋最深处。2020年11月10日8时12分，中国“奋斗者”号载人潜水器在马里亚纳海沟成功坐底，坐底深度10909米。
"There is a hole in the ocean . It is so deep that if you put Mount Qomolangma inside it, the top would still be 2 kilometres underwater!"
It’s about _____ metres deep.
11,000
eleven thousand
、
How to read numbers
① 1—12: (one, two, three, four, five, six, seven,
eight, nine, ten, eleven, twelve)
② 13—19: -teen (thir-, fif-, eigh-)
③ 20—90: -ty (twen-, thir-, for-, fif-, eigh-)
④ 21—99:
十位
_
个位
⑤ 三位数：
整百100, 200, ... 900:
_______ hundred
非整百101—999:
_______ hundred and
__
__
个位
十位
_
个位
、
960
105
671
848.86
six hundred and seventy-one
one hundred and five.
nine hundred and sixty
eight hundred and forty-eight point eight six
Can you read these numbers
Practice
三位数：百位数字 + hundred + and + 十位和个位（十位若是0，直接读个位）
、
8,848.86
四位数
读法
thousand
eight hundred and forty-eight
point
eight six
小数部分逐个读出每个数字
读法：eight thousand eight hundred and forty - eight point eight six
⑥ 多位数:
四位数：千位数 + thousand + 后面三位数（小数部分逐个读出数字）
、
五位数读法
11,000
eleven thousand
259,613
two hundred and fifty-nine thousand six hundred and thirteen
六位数读法
9,000,000
nine million
七位数读法
million
thousand
小窍门
自右向左三逗分；
一逗千(thousand)
二逗百万(million)
三逗十亿(billion)
左右三位分开读；
百位十位and连。
这种方法你喜欢？
大数字读法：从右往左，三位一截；每截都按三位数读；截完加单位：billion (十亿) / thousand（千） / million(百万), ；and 用在百十间
、
Read!
Who is
the best
9,752.22
5,660,000,000
8,653,325
6,000,080,000
eight million, six hundred and fifty-three thousand, three hundred and twenty-five.
five billion, six hundred and sixty million.
nine thousand, seven hundred and fifty-two point two two.
six billion and eighty thousand.
Competition !
Practice
、
9,600,000
1,025
6,671
8,848.86
six thousand, six hundred and
seventy-one.
one thousand and twenty-five.
nine million, six hundred thousand.
eight thousand, eight hundred
and forty-eight point eight six .
Can you read these numbers
Practice
、
1a
___ Nile River ___ Angel Falls ___ Mount Qomolangma
___ Dead Sea ___ Sahara Desert ___ Mariana Trench
A
B
C
D
E
F
Listen to a game show and circle the places mentioned .
What do you know about these places Can you describe them
Match the places with the pictures.
、
Listen to the game plete the descriptions of the places.
1b
Place Description
Mount Qomolangma the ________________ in the world
Sahara Desert the ________________ in the world
Dead Sea the ________________ on earth
Mariana Trench the ________________ in the ocean
highest mountain
biggest desert
lowest place
deepest point
Tip:
听主旨大意，重点关注描述性最高级词汇
在地球上
、
416 8,848.86 11,000 9,000,000
Try to read the following numbers.
1c
four hundred and sixteen
416
nine million
eight thousand, eight hundred and forty-eight point eight six
8,848.86
11,000
9,000,000
eleven thousand
、
Place Description Measurement
Mount Qomolangma the ________ in the world ________ metres high
Sahara Desert the ________ in the world about ________ square kilometres in size
Dead Sea the ________ on earth ________ metres below sea level
Mariana Trench the ________ in the ocean about ________ metres deep
highest
biggest
lowest
deepest
8,848.86
9,000,000
416
11,000
n. 数量；测量
……米高
平方千米
在大小上
海平面以下
……米深
Listen again. Complete the measurements in 1b with the numbers below.
1c
Tip:
精听，边听边记录关键数据，用逗号三位一隔
、
物体长、宽、高、深等的表达法
基数词+单位词+形容词（long、wide、high、deep等）
基数词+单位词+in+名词（length、width、height、depth等）
Description Mountain River Sea / Lake Desert
Feature height length depth area
Most
Least
highest / tallest
smallest
longest
shortest
deepest
shallowest
biggest
smallest
高度：It’s 8.848.86 metres high.
面积：It’s about 9,000,000 square kilometres in size.
低于海平面：It’s 416 metres below sea level.
深度：It’s about 11,000 metres deep.
、
Host:
Fu Xing:
Host:
Liu Hongyu:
Host:
Fu Xing:
Listen and repeat：
Welcome to our game show! Today, it’s all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world
It’s Mount Qomolangma!
Correct! How high is it
I know this——it’s 8,848.43 metres high.
No, sorry. Fu Xing
Is it 8,848.86 metres
Highlight the key information.
警惕干扰项
抓取关键信号词并锁定答案
、
Host:
Fu Xing:
Host:
Ella:
Host:
Ella:
Host:
Liu Hongyu:
Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in
the world.
The Taklimakan Desert
Wrong! Ella
It’s the Sahara Desert.
Right! Now, how big is it
It’s about 9,000,000 square kilometres.
That’s right! What’s the lowest place on earth
It’s the Dead Sea!
锁定题干信息
长数据高效记录
、
Host:
Fu Xing:
Host:
Fu Xing:
Host:
Well done! Its surface is 416 metres below sea level. Now where’s the deepest point in the ocean
It’s in the Mariana Trench.
That’s correct! How deep is it
It’s about 11,000 metres deep.
Correct!
避免数据遗漏，一些数据可能来自于主持人
1.警惕干扰选项
2.高效记录细节
3.抓住逻辑信号词
细节题听力技巧
、
Host: Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world
Fu Xing: It's Mount Qomolangma!
Host: Correct! How high is it
Liu Hongyu: I know this—it's 8,848.43 metres high.
Host: No, sorry. Fu Xing
Fu Xing: Is it 8,848.86 metres
Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world.
Fu Xing: The Taklimakan Desert
Host: Wrong! Ella
Ella: It's the Sahara Desert.
Host: Right! Now, how big is it
Ella: It's about 9,000,000 square kilometres.
Host: That's right! What's the lowest place on earth
Liu Hongyu: It's the Dead Sea!
Host: Well done! Its surface is 416 metres below sea level. Now where's the deepest point in the ocean
Fu Xing: It's in the Mariana Trench.
Host: That's correct! How deep is it
Fu Xing: It's about 11,000 metres deep.
Host: Correct!
“the + 形容词 / 副词最高级”后面可用带有 of 、in、on 的短语等来说明比较的范围，意为“……在……中最……”。
、
Useful expressions:
主语+谓语(+the)+最高级+ in/of/among短语.
1d
Talk about the places you have learnt about.
A: What’s the lowest place on earth
B: It’s ...
A: How low is it
B: Its surface is ... metres below sea level.
A: Now, what’s ...
n. 表面；表层
、
1. The Great Pyramid is a great ___________ (奇观) of the ancient world.
2. We need to get the exact _____________ (测量数据) of the room before buying the carpet.
3. The temperature today is five degrees ___________ (低于) zero.
4. The water __________ (水平面) in the lake is rising because of the heavy rain.
5. The _________ (表面) of the moon is covered with dust and rocks.
6. Mount Qomolangma is the _________ (high) mountain in the world.
7. The Sahara is by far the __________ (large) hot desert on Earth.
8. What’s the __________ (deep) point in the ocean
— It’s the Mariana Trench.
9. Scientists use special tools for the __________ (measure) of the trench’s depth.
10. We looked at the stars and __________ (wonder) if there is life in space.
wonder
measurement
below
surface
level
highest
largest
deepest
measurement
wondered
I. 词汇练习
Exercise
、
1. How do you read the number “8,848.86” in English
A. Eight thousand eight hundred and forty-eight point eight six.
B. Eight thousands eight hundred forty-eight point eighty-six.
C. Eight thousand and eight hundred forty-eight point eight six.
2. The Dead Sea is about 430 meters _______ sea level.
A. under B. below C. down
3. — _______ is the Nile River
— It’s about 6,650 kilometers long.
A. How much B. How deep C. how long
4. The Yangtze River is one of _______ rivers in Asia.
A. long B. longer C. longest D. the longest
A
B
A
D
II. 单项选择
Homework
1. 词汇巩固：抄写本课核心活动词汇及重点句型，每个2遍，并确保会读会写。
2. 听力跟读：听读教材1b部分录音，模仿语音语调。
3. 能力提升：上网查询更多关于自然奇观的介绍， 绘制一幅“世界自然奇观探险地图”，标注英文名称和关键数据。

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