Unit 7 Section A 1a -1c 课件【2024-2025学年人教版英语八年级下册Unit 7 What's the highest mountain in the world?】

(共29张PPT)
Unit 7 what’s the highest
mountain in the world
Section A 1a-1c
◇Look at the pictures and understand 看图并理解
big
bigger
biggest
形容词和副词的等级
形容词和副词有三个等级：原级、比较级、最高级
1.原级：即形容词和副词的原形。
small, good, pretty, big, many, hard, happily,
slowly, quickly
2. 比较级：两个人或物之间的比较。表示“较……”或“ 更……一些”。标志词：than (比）
单音节词通常是 -er 结尾；多音节或部分双音节词通常在之前加 more. 如:smaller, better, taller, older, more, harder more interesting , more quickly
3.最高级：三个或三个以上的人或物之间 的比较。
标志词：in/of+范围
表示“最……”的意思。（两者以上用最高级）
单音节词通常是 -est 结尾；多音节或部分双音节词通常在之 前加 most. 在形容词的最高级前必须加 the; 副词之前可以不 加。如：smallest, tallest, newest, best, most interesting, most difficultly
不规则变化，
要多加注意哦！
good→ →
bad → →
many → →
little → →
well→ →
badly→ →
much→ →
far→ →
better
best
worse
worst
more
most
less
least
better
best
farther
worse
worst
more
most
farthest
写出以下单词的比较级和最高级
Exercise
1. high
2.big
3.deep
4.long
5.many/much
6.interesting
higher
bigger
deeper
longer
more
more interesting
highest
biggest
deepest
longest
most
most interesting
New words
Qomolangma 珠穆朗玛峰[ t m lɑ m ]
The Caspain Sea 里海
[ k spi n]
The Sahara 撒哈拉沙漠
[s 'hɑ:r ]
The Nile 尼罗河
[na l]
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
1a Match the facts you know
Do you know these numbers How to read them
8,844.43 meters high
1,025 meters deep
9,600,000 square kilometers in size
6671 kilometers long
大于一千的基数词表达法
1
从数字的右端向左数，每三位数加一个逗号；
2
第一个逗号前的数为thousand(千），第二个逗号前的数为million(
百万），第三个逗号前的数为billion（十亿）；
3
读的时候，通常在hundred 后面加and,如果百位数为0，则在
thousand后面加and
220
hundred 百
thousand 千
million 百万
billion 十亿
600,
76,
235,8
读一读
2,674
two thousand six hundred and seventy-four
164,213,430
one hundred and sixty-four million, two hundred and thirteen
thousand, four hundred and thirty
18,357,089
eighteen million, three hundred and fifty-seven thousand,
and eighty nine
Languge points
一. 长、宽、高、深、面积的表达方法
8,844.43 meters high
1,025 meters deep
6671 kilometers long
1、基数词 + 单位词 + 形容词（long, wide, high, deep等）
基数词>1,单位名词用复数
2、基数词 + 单位词 + in + 名词
面积
length 长度
width 宽度
height 高度
deepth 深度
e.g. 9,600,000 square kilometers in size
e.g. The river is 20 meters wide.
=The river is 20 meters in width.
如何询问：
A: How high/long/deep/large/wide is it
B: It’s+数词+数量单位+high/long/deep/large/wide
1b Listen and complete the sentences.
the highest mountain
What's the highest mountain in the world
Practice
How high is Qomolangma
It's 8,844.43 meters high.
the longest river
What's the longest river in the world
How long is the Nile
It's 6,671 meters long.
the deepest salt lake
What's the deepest salt lake in the world
How deep is the Caspian Sea
It's 1,025 meters deep.
the biggest desert
What's the biggest desert in the world
How large is the Sahara
It's about 9,600,000 square kilometers in size.
Use the information in 1b to make conversations.
1c
A: What is the highest mountain in the world
B: Qomolangma.
Example
A: What is the … in the world
B: …
A: How ... is ...
B: It's (about) ... .
二. 用比较级表示最高级
e.g. Qmolangma is higher than any other mountain in the world.
1. 比较级+than any other+可数名词单数
＝比较级 + than the other + 名词复数
该结构意为“比其他任何一个……都……”，指同一范围内比较
＝Qomolangma is higher than the other mountains in the world.
＝Qomolangma is the highest mountain in the world.
The Sahara is desert in the world.
the Sahara
=The Sahara is ___ __than ____ ____deserts in the world.
=The Sahara is __ ___than ________desert in the world.
bigger
bigger
any other
the other
the biggest
the Caspian Sea
The Caspian Sea is the deepest salt lake in the world.
The Caspian Sea is deeper than any other salt lake in the world.
The Caspian Sea is deeper than the other salt lakes in the world.
the Nile
The Nile is the longest river in the world.
The Nile is longer than any other river in the world.
The Nile is longer than the other rivers in the world.
Exercise
Tom is taller than girl in his class.
Tom is taller than student in his class.
Tom is taller than students in his class.
any
any other
2. 比较级 + than any（任何的）+ 可数名词单数”
指比较对象不在同一范围内或不属于同一类别的比较
the other
Exercise
一、单项选择
1.The Yangtze River is about ______.
A. 6300 kilometer long B. 6300 kilometers long
C. 6300-kilometer long D. 6300 kilometers’ long
2.The girl is ______ than any other girl in her class.
A. more beautiful B. the most beautiful
C. beautiful D. much beautiful
B
A
二、翻译句子
1、我们学校的面积大约是1000平方米。
Our school is about 1000 .
2、这座山有1500米高。
The mountain is .
3、长江是中国最长的河流。
The Yangtze River is river in Chian.
4、中国比亚洲其他任何一个国家都要大。
Chian is than in Asia.
square meters in size
1500 meters high
the longest
bigger any other country