Unit 7 what's the highest mountain in the word 比较级与最高级的转换（课件）（26张ppt+内嵌音视频）

(共26张PPT)
Unit7
What's the highest mountain in the world
SectionA 1a-1c
人教版八年级下
教学目标
1.能够认读并正确使用新单词:square,meter,deep,desert.
2. 掌握较大数字的表达（Large numbers).
3.能够用具体数字说明事物，并能运用比较级或最高级表述事实。
4.巩固形容词最高级以及用比较级表达最高级含义（than any other)方法。
5.能够听懂有关自然地理话题的对话，特别是获取对话中的大数字
，以及比较级，最高级信息，并模仿所学语言表述世界自然地理事实。
Let's enjoy a video.
8844.43
The expression of numbers
Tips
4
21
128
5,820
Read these numbers
four
twenty-one
one hundred and twenty- eight
five thousand eight hundred and twenty
How about these
886,510
2,019
7,725,385
84.14
111 ,111 ,111
要读一组长数字，可以先把这组数字分3个数字一组用逗号隔开
111111111
million
（百万）
thousand
（千）
英语里没有万，十万的表达
一万：ten thousand
十万： one hundred thousand
Have a try
86，510
eighty-six thousand five hundred and ten
2，019
two thousand and nineteen
百位数没有，不读
7，725，385
seven million seven hundred and twenty-five thousand three hundred and eighty-five
Have a try
9，600，000
nine million six hundred thousand
84 . 14
eighty-four point one four
小数点用point表示
Have a test
45567
forty-five thousand five hundred and sixty-seven
7899256
67 . 23
sixty-seven point two three
45 , 567
7 , 899 , 256
seven million eight hundred and ninety-nine thousand two hundred and fifty-six
summary
把长数字分为3个数字一组，用逗号隔开，从右到左，
把第一个逗号看作thousand，第二个逗号看作million,第三个逗号是billion
1
2
”and“ 只有十位数和百位数之间出现
3
小数点后面的数字按单个读
百位数没有数字时，thousand 和 十位数之间，and不省略
84 . 14 小数点后面读one four
不整读
When we are sightseeing（观光）,we should also learn something important.
geographical facts(地理景况）
historical facts（历史景况）
geographical fact
Qomolangma
______ meters high
8,844.43
eight thousand eight hundred and forty-four point four three
geographical fact
the Sahara
size : square (平方）
about ___________ square kilometers in size
9,600,000
nine million six hundred thousand
desert
geographical fact
the Caspian sea
depth : deep (深的）
________ meters deep
1,025
one thousand and twenty-five
salt lake
geographical fact
the Nile
kilometers long
6,671
six thousand six hundred and seventy-one
river
Work on 1a. Match the facts you know.
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
the highest mountain
bigger than any other desert
最高级：the+ 形容词/副词+ est +单数名词+in/of
=形容词、副词比较级+than+any other+单数名词+in/of
A:What is the highest mountain in the world
the deepest salt lake
the longest river
the biggest desert
B:Qomolangma./The Caspian Sea/The Nile/...
A:How high/deep/long/big is it
B:It is ... meters high/deep/long.
square kilometers in size.
Practice
Groupwork
Qomolangma is ___________________.
It is ____________________________ in the world.
The Sahara is ___________________.
It is ______________________ in the world.
The Caspian sea is ___________________.
It is ___________________________ in the world.
The Nile is ___________________.
It is __________________in the world.
8844.43 meters high.
higher than any other mountain
about 9,600,000 square kilometers in size.
the biggest desert
1,025 meters deep.
the deepest of all the salt lakes
6,671 kilometers long.
the longest river
Talking and writing
The Great Wall longest wall 21,196.18 kilometers
Tian'anmen Squa re biggest square 440,000 square kilometers in size
Mount Huang the most famous mountain 1,864.8 meters high.
Summary
1.square
meter
deep
desert.
2. ...higher than any other mountain...
=
...the highest mountain ...
最高级：the+ 形容词/副词+ est +单数名词+in/of
=形容词、副词比较级+than+any other+单数名词+in/of
3.A:What is the highest mountain in the world
B:Qomolangma.
Homework
1.Recite the vocabulary in this part.
2.Talk about our Chinese beautiful places.
黄山
Mount Huang
庐山
Mount Lu
嵩山
Mount Song
华山
Mount Hua
Thanks for listening!