人教版八年级下册Unit7 What's the highest mountain in the world SectionA 1a-1c课件＋音视频(共35张PPT)

(共35张PPT)
Unit7
What’s the highest mountain in the world
Section A 1a-1c
Which is the biggest continent(洲) in the world
A. Europe (欧洲)
B. Asia (亚洲)
C. Africa (非洲)
Which is the biggest ocean in the world
A. Pacific (太平洋)
B. Atlantic (大西洲)
C. Indian Ocean (印度洋)
Which is the highest plateau (高原) in the world
A. Qinghai-Tibet Plateau (青藏高原)
B. Pamirs Plateau(帕米尔高原)
1a
Match the facts you know.
Qomolangma
the Nile
the Caspian Sea
the Sahara
Qomolangma about 9,600,000 square kilometers in size
The Sahara 1,025 meters deep
The Caspian Sea 6,671 kilometers long
The Nile 8,844.43 meters high
Let’s learn more geographical facts (地理知识) about the world.
Qomolangma
What's the highest mountain in the world
Qomolangma.
How high is it
( What's the height of it )
It's 8,848.86 meters high.
It's 8,848.86 meters in height.
height 高度
It's the highest mountain in the world.
It's higher than any other mountain in the world.
Qomolangma
the Nile
the Nile
What's the longest river in the world
The Nile.
How long is it
( What's the length of it )
It's 6,671 kilometers long.
It's 6,671 kilometers in length.
length 长度
It's the longest river in the world.
It is longer than any other river in the world.
the Caspian Sea
the Caspian Sea
What's the deepest salt lake in the world
The Caspian Sea.
How deep is it
( What's the depth of it )
It's 1,025 meters deep.
It's 1,025 meters in depth.
depth 深度
It's the deepest salt lake in the world.
It is deeper than any other salt lake in the world.
the Sahara
the Sahara
What's the biggest desert in the world
The Sahara.
How big is it
It's about 9,600,000 square kilometers in size.
( What size is it )
It has/covers 9,600,000 square kilometers.
It‘s the largest desert in the world.
It is larger than any other desert in the world.
size 面积
1a
Match the facts you know.
Qomolangma
the Nile
the Caspian Sea
the Sahara
Qomolangma about 9,600,000 square kilometers in size
The Sahara 1,025 meters deep
The Caspian Sea 6,671 kilometers long
The Nile 8,844.43 meters high
=in depth
=in length
=in height
6,671 kilometers long
6,671 kilometers in length
8,848.86 kilometers high
8,848.86 kilometers in height
height 高度
length 长度
depth 深度
size 面积
1,025 meters deep
1,025 meters in depth
about 9,600,000 square kilometers in size
表示长，宽，高的表达：基数词+单位词+形容词 (long, wide, high, deep)
Summary
Qomolangma
the Nile
the Caspian Sea
the Sahara
表示长，宽，高的表达：基数词+单位词+形容词/ in +(length, width, height, depth, size)
the Caspian Sea
1,025 meters deep
How to read it
thousand
one thousand and twenty-five
the Nile
6,671 kilometers long
How to read it
thousand
six thousand six hundred and seventy-one
Qomolangma
8,848.86 meters high
How to read it
thousand
eight thousand eight hundred and forty-eight, point eight six
point
about 9,600,000 square kilometers in size
How to read it
thousand
million
nine million six hundred thousand
the Sahara
9,300,000,000 light years
thousand
billion
nine billion three hundred million
million
9,300,040,620 light years
thousand
billion
nine billion
million
three hundred million
forty thousand
six hundred and twenty
Summary
______ billion (十亿)
______ million (百万)
_____ thousand
______ hundred and ______
Exercise
8,742.33
2,463,128
1,370,000,000
2,000,030,000
eight thousand seven hundred and forty-two point three three
two million four hundred and sixty-three thousand one hundred and twenty-eight
one billion three hundred and seventy million
two billion (and) thirty thousand
Time to listen
1b
Listen and complete the sentences.
1. Qomolangma is ______ than any other mountain in the world.
2. The Sahara is ____________ desert in the world.
3. The Caspian Sea is ____________ of all the salt lakes.
4. The Nile is _________ river in the world.
higher
the biggest
the deepest
the longest
比其他任何人都高=最高
= Qomolangma is the highest mountain in the world.
1b
Listen and fill in the blanks.
Teacher：Yesterday, we learned some important _______________ . I hope you
all still remember them. I’m going to ______ you now by asking a few
questions. First, what’s the _______ mountain in the world
Boy 1： Qomolangma! It’s higher _______ _____mountain in the world.
Teacher：That’s right. And who can tell me what the Sahara is
Girl 1： The Sahara is__ ______ ______ in the world.
Teacher：Very good. And which is the _______ salt lake in the world
Girl 2： The Caspian Sea is the deepest ___ ____ the salt lakes.
Teacher：You’re all so smart! Now, for the last question, which is the _____ river
in the world
Boy 2： I know! The Nile is the longest river in the world.
Boy 1： And the Amazon is ___ _______ longest river in the world.
Teacher：It seems that you know the answers to all my questions. Good job!
geographical facts
test
highest
than any other
biggest
desert
the
deepest
of all
longest
“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”
“the+序数词+最高级+单数名词+in…” 表示“是……中的第几……”
形容词最高级结构: the+最高级+其他
How to ask about geographical facts
“比较级+than any other+可数名词单数+其他”
表示“同一范围比其他任何一个……都……”
比较级+than any可数名词单数+其他表示不同范围的比较
注：该结构可与“the+最高级+其他”相互转换
Fill in the table.
Mountain River Sea/Lake Desert
Feature
Most
Least
height
highest
lowest
length
longest
shortest
depth
deepest
shallowest
area
biggest
smallest
1c
Use the information in 1b to make conversations.
Qomolangma
the Nile
the Caspian Sea
the Sahara
A: What is the ... in the world
B: ...
A: How ... is it
B: It is ...high/deep/in size...
1. about 9, 000, 000 square kilometers in size 面积大约900万平方千米
(1)square
①[形容词]平方;正方形的;表示“平方”时用于数字后表示面积。
50 square meters 50平方米
a large square room一个正方形的大房间
②[可数名词]正方形;广场
draw a square画一个正方形 Tian'anmen Square天安门广场
(2)in size在尺寸上;在大小方面
The sweaters are different in size.这些毛衣尺码不同。
The square is about 500 square meters in size.这个广场面积大约500 平方米。
Language points
2. 1, 025 meters deep 1025 米深(教材第49 页,la)
(1)meter[可数名词]米;公尺
meter 为美式英语拼写,英式英语拼写为 metre。
a 10-meter-wide road一条10米宽的路
about 500 meters long大约500米长
(2)deep[形容词]深的;纵深的
“某物的深度”的表达方式为“基数词+表示‘度量’的名词+ deep”。
The hole is 10 meters deep.这个洞10米深。
Language points
长、宽、高、深、面积的表达方法
The river is 20 meters wide. = The river is 20 meters in width.
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, size等）
【拓展延伸】作定语时用合成词“数词 - 单位词单数 – 形容词”。
This 20-meter-long rope isn’t long enough to help climb the mountain.
Language points
3. Qomolangma is higher than any other mountain in the world. (教材 P49 1b)
比较级 + than any other + 可数名词单数
Point
该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。
She is thinner than any other student in her class. = She is the thinnest in her class.
other必不可少，用以将主语从比较对象中排除，避免逻辑矛盾。
Language points
【特别提醒】如果比较对象不在同一范围内或不属于同一类别，应用“形容词/副词比较级 + than any（任何的） + 可数名词单数”。
The Pacific Ocean is larger than any lake in the world.
练一练
Hulunbuir is bigger than _____________ city in China.
Hulunbuir is bigger than _____________ city in Anhui.
any other
any