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(共18张PPT)
Unit 4 The Wonders of Nature
(新人教)英语
八年级下册
Grammar Focus (4a-4d)
第十二师第四中学
八年级英语备课组
Learning Objectives
复习并巩固形容词和副词的比较级和最高级的用法，总结和积累用于比较事物的不同语言结构；
总结和梳理大数字的表达法，并理解英文数字表达法的特点；
掌握有关地理之最及其高度、长度、深度、面积等信息的问句和答语，使用形容词和副词的比较级、最高级和大数字描述自然景观，并对大自然的神奇产生热爱。
通过本课时学习，我能够：
Review
中文 英文 中文 英文
自然奇观 最长的河流
两米高 流经距离最远
低于/高于海平面 了解
五米深 不惜任何代价
在地球上 ... 的发展
在大小上 顺便说一下
潜入深海 A 和 B都...
和 ... 一样好 古代文明
...的底部 母亲河
natural wonders
two metres high
below/ above sea level
five metres deep
on earth
in size
dive into the deep sea
as well as
the bottom of...
travel the farthest
learn about
at all costs
the longest river
the development of
by the way
both A and B
ancient civilization
mother river
Lead in
Ten natural wonders of the world
Do you know what these numbers are about
6,300 8,848.86 11,000 9,000,000
6,300
8,848.86
11,000
9,000,000
six thousand and three hundred
eight thousand,eight hundred and forty-eight point eight six
eleven thousand
nine million
Lead in
the longest river
travel the farthest
in China
the Yangtze River
Mount
Qomolangma
the highest mountain
is still growing taller
Mariana Trench
the deepest point in the ocean
Sahara Desert
the biggest desert in the world
Read and think
Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions.
4a
What is the biggest desert in the world It is the Sahara Desert.
How big is it It is about 9,000,000 square kilometres in size.
Where is the deepest point in the ocean It is in the Mariana Trench.
How deep is it It is about 11,000 metres deep.
Some deep-sea animals are blind, but they can “see” as well as others. Mount Qomolangma is one of the greatest wonders of the world, and it is still growing taller. The Yangtze River travels the farthest in China and is about 6,300 kilometres long.
Review
How do we use adjectives and adverbs to compare
比较级 + than
the + 最高级 + of / in /among ...
as + adj./ adv.+ as
同级比较,
“和…一样”
两者之间的比较，“较…”或“更…”
三者及以上的比较，“最……”
Jim is as tall as Tom.
Jim runs as fast as Tom.
否：not so/as + adj./ adv.+ as
A be adj.(er) than B.
A be more adj. than B.
A verb. adv.(er) than B.
A verb. more adv. than B.
主+be + the adj.最高级 +n.(+范围).
主+ verb. + the adv.最高级 (+范围).
most+ adj./adv
adj./adv -est
Review
越来越…：比较级 + and + 比较级 (more and more + adj.) , 其后不可接than。
　 eg. It’s getting warmer and warmer.
eg. English is becoming more and more important.
越…，越…： the + 比较级，the + 比较级
　 eg. The harder you work, the better grades you will get.
比较级表最高级：比较级 + than + anyone else / any other + 名词单数
　 eg. She runs faster than any other student in her class.
最……的……之一：one of + the +形容词最高级 + 可数名词复数
　 eg. Lu Xun is one of the greatest writers in China.
第几最……：the + 序数词 + 最高级 + 单数名词
　 eg. The Yellow River is the second longest river in China.
比较级、最高级的常用结构
Let's learn
How to read large numbers
1,234,567,891.09
数字拆分：从右往左，每三位用逗号分隔，形成分级单位：
billion (十亿)/ million (百万)/ thousand (千)
读法顺序：从左到右读，每个分节加对应单位（百位和十位中间加and）
小数点读作point, 小数点后的数字逐个单独读出
billion
million
thousand
one billion,
two hundred and thirty-four million,
five hundred and sixty-seven thousand,
eight hundred and ninety-one
point
zero nine
Practice
Write or spell out the numbers.
159
2020.35
9,018,357,089
one hundred and fifty-nine
two thousand and twenty point three five
nine billion, eighteen million, three hundred and fifty-seven thousand, and eighty-nine
eight hundred and sixty-four thousand, three hundred
forty million, four hundred and twenty-four thousand point six zero
864, 300
40,424,000.60
Practice
Write or spell out the numbers.
4b
1. Mount Kilimanjaro is ______ (five thousand, eight hundred and ninety-five)
metres high.
2. _______ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second.
3. The East African Rift Valley is about 4,000 (____________) miles long.
4. The Taklimakan Desert has a total area of about 337,000 (___________________________________) square kilometres.
5895
25768
four thousand
three hundred and thirty-seven thousand
[ k l m n d ɑ r ]
[ ɡ ]
[r ft v li]
[ t kl mɑ k n]
倾泻而下
总面积为...
height (高度)
volume (体积)
length (长度)
size (面积大小)
Complete the passage with the correct forms of the words in the box.
Practice
4c
largest
closer
louder
far
most amazing
go close to 靠近; 接近
就在眼前
极目所尽
在...的顶部
Write some questions to compare places. Then ask a partner your questions.
4d
Practice
What is the highest ... 　　 Which park is bigger, ... or ...
What is the hottest city, Sanya or Changsha
Which river is longer, the Yangtze River or the Yellow River
What is the most beautiful beach in your country
Which mountain is higher, Mount Tai or Mount Huang
Which place is more crowded on weekends, the supermarket or the park
...
city
river
beach
mountain
place
...
Exercise
用单词的适当形式填空。
1. They found that the monkey was ____________ (clever) of all the animals.
2. —Cindy, are you feeling better now —No, Mum. I feel even _______ (bad).
3. Last but not ______ (little), do try to get some exercise,
4. May I have _______ (much) beef because it tastes so nice
5. The lake near my home is the _____ (good) place to go fishing.
6. You look much ________ (slim) in this black pair of trousers.
7. Zhang Shun was the ______ (old) runner to finish the 2022 Beijing Marathon.
worse
more
slimmer
the cleverest
least
best
oldest
Exercise
1. 海洋中最深的地方是马里亚纳海沟。
The ________ ________ in the ocean is the Mariana Trench.
2．这个公园总面积有500平方米。
This park ______ _____ ______ _____ of 500 square metres。
3. 就我记得的，我们下周要进行一场数学测试。
______ ______ ______ I remember，we will have a maths test next week.
4．实验课上我们不能靠近火源。
We can't ______ ________ ______ the fire in the lab class.
5．那座山的山顶终年积雪。
There is snow ______ ______ ______ ______ the mountain all year round.
根据汉语意思完成句子。
deepest point
has a total area
As far as
go close to
at the top of
Homework
Must do：
Choose to do：
1. Summarize the comparative and superlative of adjectives and adverbs, and
make a mind map..
2. Describe the differences between two natural wonders in five sentences，
using at least three superlative adjectives.
Introduce one of your favourite places and compare it with others.
第十二师第四中学
鼎先在人 人人用心
立心于事 事事为先
THANK YOU

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