Unit 7 What’s the highest mountain in the world （SectionA Grammar Focus-4c）课件(共26张PPT)

(共26张PPT)
Unit 7
What’s the highest mountain in the world
Section A Grammar Focus-4c
课时教学目标
语言目标：
1. 掌握本课时重点词汇和短语：
ocean, the Pacific Ocean等;
2. 学习大数字的表达和读法，掌握比
较级和最高级的用法。
文化意识：
使学生能够提高自己的语言表达能力。
思维品质：
学习掌握描述自然景观特征的语句并熟练运用对自然景观数据进行问答的语句。
学习能力：
通过自主学习、合作学习、探究学习、跨学科学习培养合作意识与学习能力。
Lead-in
珠穆朗玛峰
乔戈里峰
干城章嘉峰
The top three highest mountains
Some interesting facts about Qomolangma
Qomolangma is 8,848.86 meters high and is still growing.
It takes at least 30,000 USD to climb Qomolangma.
More than 7,000 climbers reach the summit of Qomolangma.
About 300 people have died on the mountain.
The summit of Qomolangma is on the border of Nepal and Xizang (China). Nepal lies to the south and China to the north.
里海
巴尔喀什湖
马拉开波湖
The top three deepest salt lakes
The four ancient civilizations
Grammar Focus
What’s the highest mountain in the world Qomolangma.
How high is Qomolangma It’s 8,844.43 meters high. It’s higher than any other mountain.
Which is the deepest salt lake in the world The Caspian Sea is the deepest of all the salt lakes.
Did you know that China is one of the oldest countries in the world Yes, I did. It’s much older than the US.
Find the comparatives and superlatives.
此句型用比较级表达最高级含义
8,848.86
30,000
7,000
eight thousand eight hundred and forty-eight point eight six
thirty thousand
Can you read these large numbers
seven thousand
61,021
sixty-one thousand and twenty-one
大数字的表达与读法
(1)1, 000 以上的基数词的表示法：先从右至左数，每三位数加一个逗号。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）。读时通常在 hundred 后加 and，如果读数中百位数为 0，则在 thousand 后加 and。
(2) 模糊表达：hundred/thousand 加 -s 的情况： hundreds of... 成百上千的……；thousands of... 成千上万的……
2674
2, 674
thousand
and
two thousand six hundred and seventy-four
hundred
1. 从数字右端向左数，每三位数加一个逗点；
2. 第一个逗点前的数为thousand（千）；
3. 读时通常在hundred后加and。
18357089
18,357,089
million
and
eighteen million, three hundred and fifty-seven thousand, and eighty-nine
thousand
1. 从数字右端向左数，每三位数加一个逗点；
2. 第一个逗点前的数为thousand（千）；第二个逗点前的数为million（百万）；
3. 读时通常在hundred后加and，如果百位数为0，则在thousand后加and。
形容词和副词比较级的用法
(1)“ 比较级 +than” 表示一方比另一方……。
(2)“ 比较级 +and+ 比较级 ” 或 “more and more+ 原级 ” 意为 “ 越来越……”。
(3)“the+ 比较级 ..., the+ 比较级 ...” 意为 “ 越……越……” 。
(4)“the+ 形容词比较级 (+of the two...)” 意为 “（两者中）更……的那一个”。
(5) “less+ 形容词 / 副词原级 +than” 表示一方不如另一方……。
(6)“Which/Who+be/ 动词 + 比较级，A or B ” 用于询问两者之间哪个更……。
(7)“ 倍数 + 比较级 +than” 意为 “ 是……的几倍 ”。
形容词和副词最高级的用法
(1)“the+ 形容词最高级（+ 名词）+ 范围 ” 意为 “……中最……的 ”。
(2) “one of the+ 形容词最高级 + 可数名词复数 + 范围 ” 意为 “……中最……之一 ”。
(3) “Which/Who+be/ 动词 + 最高级，A, B or C ” 表示 “ 在 A, B, C 三者中谁最……？ ”
(4)“the+ 序数词 + 形容词最高级 + 单数名词 + 范围 ” 意为 “A, B, C……中第几……的 ”。
“比较级+than any other+可数名词单数” = “比较级+than the other+可数名词复数” 表示 “比其他任何……都……”, 表示最高级含义， 可与表示最高级的句子进行转换。
My father is the tallest one in my family.
=My father is taller than any other member in my family.
=My father is taller than the other members in my family.
可用于修饰形容词和副词比较级程度的副词（短语）有：
much, a little, even, a lot, a bit, far等。
形容词和副词比较级和最高级的变化规则
(1) 规则变化：
①一般情况下，单音节或双音节的形容词（或副词）比较级 +-er ， 最高级 +-est。
②以 e 结尾的词，比较级 +-r，最高级 +-st 即可。
③以辅音字母 +y 结尾的变 y 为 i+-er 或 -est。
④以一个辅音字母结尾的重读闭音节词，双写这一辅音字母后再加 -er 或 -est。
⑤ 多音节及部分双音节词，在词前加 more 或 most。少数单音节词也是这样，如：pleased 和 tired。
(2) 不规则变化：
good /well— better — best；bad/badly — worse — worst；many/much — more — most；
far — farther/further—farthest/ furthest
1. The Amazon River is one of the _________ rivers in the world. It’s a little ________ than the Yangtze River.
2. Qomolangma is 8,848.86 meters _______. It’s one of the most __________ places for serious mountain climbers.
3. No ocean in the world is as ________ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is ________ smaller.
Fill in the blanks with the correct forms of the words in the box.
4a
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n. 大海，海洋
No ocean in the world is as big as the Pacific Ocean.
as+形容词/副词原级+as 表示双方在程度、性质、特征等方面一样。
此句意为“世界上没有和太平洋一样大的海洋”，表示“太平洋是世界上最大的海洋” ，表示最高级含义，可与表示最高级的句子进行转换。
Write two comparisons about two topics. Write true facts.
4b
e.g. Two rivers: the Yangtze River and the Amazon River
The Yangtze River is almost as long as the Amazon River.
The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.
Two cities: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Two animals: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Singapore
Kuala Lumpur
Kuala Lumpur is as modern as Singapore.
Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumper.
Monkey
Dog
Some dogs are bigger than monkeys.
A monkey climbs a tree faster than a dog.
Write five questions using comparisons. Then ask your partner your questions.
4c
1. ________________________________________________________
2. ________________________________________________________
3. ________________________________________________________
4. ________________________________________________________
5. ________________________________________________________
What is the highest building in our city
What is the busiest subway station in our city
What is the largest shopping mall in our city
Which is the biggest park in our city
Which is the longest road in our city
Which place is the best for our school trip
Our school is going on a school trip in the city. Which is the best place to go to Can you give some advice and why Work in groups of 5 and report to the class. Remember to use comparisons.
Example:
We think ______ is the best place for us to go on a school trip. Of all the places, it is the ________. And we can also ______ . So we all think it is a good idea to visit________________.
一、单项选择
China has a ______ population than America.
A. more B. much more C. much large D. much larger
Xi’an is one of _____ in China.
A. more famous city B. most famous cities
C. the most famous cities D. much more famous city
China is the third _____ country in the world.
A. large B. largest C. larger D. as large as
1
2
3
D
C
B
Exercises
Staying with families and friends in our free time is one of _____things.
A. the happiest B. happier C. the happy D. happiest
Qomolangma is higher than _____ in the world.
A. the other mountain B. another mountain
C. any other mountain D. any mountains
—I don’t think history is more useful than physics.
—I disagree. In my opinion, history is______physics.
A. as useful as B. not so useful as
C. less useful than D. the most useful of
4
5
A
C
6
A
（武威中考）The number “23,456”can be read as “ ”.
A. twenty-three thousand, four hundred and fifty-six
B. twenty-three thousand and four hundred fifty-six
C. twenty-three thousand and four five six
D. twenty-three thousand, four five six
7
A
二、用括号中所给单词的适当形式填空
1
This question is quite __________. That one is __________________ than this one. (difficult)
I think table tennis is as _________ as soccer. (excite)
Which of these books would you like ________ (much)
Take exercise one hour a day, and you will become ________than before. (strong)
Uncle Wang doesn’t drive as__________ as Uncle Liu. I think Uncle Liu drives_____________ . (carefully)
2
3
4
5
difficult
more difficult
exciting
most
stronger
carefully
more carefully