Unit 7 What's the highest mountain in the world第1课时考点讲解 （25张PPT）

Unit 7 What’s the highest mountain in the world?
R·八年级下册
第一课时
Do you know these mountains?
Mount Lu
Mount Song
Mount Huang
Mount Tai
Mount Hua
Qomolangma
Qomolangma is higher than any other mountain in the world.
Language points
1. 英语中的形容词和副词常用三种形式来表达事物的等级差别，即原级、比较级和最高级。
比较级主要用于两者之间作比较。
最高级主要用于三者或三者以上进行比较。
一、比较级和最高级
2. 规则变化
①直接加 -er 或 -est
tall—_____—______ long—______—______
②以不发音的字母e结尾的单词直接加 -r 或 -st
③以“辅音字母+y” 结尾,把y变为i,再加 -er 或- est
nice—______—______
heavy—________—________
taller
tallest
longer
longest
nicer
nicest
heavier
heaviest
④重读闭音节（末尾只有一个辅音字母）
双写辅音字母再加 -er或 -est
⑤部分双音节词和多音节词
分别在原级前加more构成比较级和most构成最高级
big—_______—_______
slowly—___________—___________
beautiful—______________—______________
bigger
biggest
more slowly
most slowly
more beautiful
most beautiful
{C4B1156A-380E-4F78-BDF5-A606A8083BF9}原级
比较级
最高级
good / well
better
best
bad
worse
worst
many/much
more
most
little
less
least
old
older/elder
oldest / eldest
far
Farther (更远)/
Further (进一步的)
farthest /
furthest
3. 不规则变化
（1）在形容词最高级前通常用the，在副词最高
级前可用the，也可省略。
（2）比较级前常用的修饰语有 far，even，a lot，
a bit，much等。
4. 使用比较等级应注意的几点：
5. Qomolangma is higher than any other
mountain in the world.
比较级+ than any other +可数名词单数
用形容词的比较级表示最高级。
=比较级+ than the other +可数名词复数
尼罗河比世界上其他任何一条河都长。
The Nile is longer than any other river in the world.
=The Nile is longer than the other rivers in the world.
=The Nile is the longest river in the world.
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}
比较级+ than any other +可数名词单数
意为“……比其他任何一个都……”，指在同一范围内进行比较。
比较级+ than any +可数名词单数
意为“……比任何一个都……”，指不在同一范围内进行比较。
China is larger than any other country in Asia.
中国比其他任何一个亚洲国家都大。
（中国属于亚洲）
China is larger than any country in Africa.
中国比任何一个非洲国家都大。
（中国不属于非洲）
What is the highest mountain in the world?
Qomolangma.
Let's talk
What is the deepest salt lake in the world?
The Caspian Sea.
How much do you know about the Nile?
It's the longest river in the world.
How much do you know about the Sahara?
It's the biggest desert in the world.
Practice
1. Shanghai is bigger than ____ in Japan.
A. any other city B. all the other cities
C. any city D. the other cities
2. I think she is ____ girl of all the girls.
A. beautiful B. more beautiful
C. most beautiful D. the most beautiful
3. My brother is _____ more outgoing than me.
A. many B. little C. much
4. _____ children there are in a family, _____ their
life will be.
A. The less, the better
B. Fewer, richer
C. The fewer, the better
Summary
1. —What is the highest mountain in the world?
—Qomolangma.
2. Of all the mountains, Qomolangma rises
the highest and is the most famous.
3. —Which is the deepest salt lake in the world?
—The Caspian Sea is the deepest of all the salt lakes.
Thanks