(共31张PPT)
Unit7 What’s the highest mountain in the world
Period2 Grammar(形容词、副词比较级和最高级)
新目标人教版 八年级下
Lead in
A)比较等级的变化规则
◆规则变化
类别 构成方法 原级 比较级 最高级
单音节词和少数双音节词 直接加-er，-est。 young younger youngest
以不发音的e结尾的加-r，-st。 nice nicer nicest
以重读闭音节结尾，如末尾只有一个辅音字母，则双写这一辅音字母，再加-er，-est。 big bigger biggest
fat fatter fattest
hot hotter hottest
辅音字母加y结尾，变y为i，再加-er，-est。 happy happier happiest
healthy healthier healthiest
Review
多音节词和部分双音节词 有些双音节词和多音节词，在词前加more，the most。 important more important the most important
careful more careful the most careful
注意：
1.new，few，slow，clean等词以重读闭音节结尾，末尾只有一个辅音字母，且发的是长元音，不用双写。
2.以形容前缀un构成的三音节形容词不适合上述规则。
如：unhappy—unhappier—unhappiest，
untidy—untidier—untidiest
◆不规则变化
原级 比较级 最高级
good/well better best
bad/badly worse worst
many/much more most
little less least
far 距离 farther farthest
程度 further furthest
old 年龄 older oldest
辈分 elder eldest
B)比较等级的常考句型
级别 比较程度 表达方式和意义 例句
原级 同等程度 肯定形式 as＋原级＋as(和……一样……) He is as tall as his brother.他和他的哥哥(弟弟)一样高。
否定形式 not＋so/as＋原级＋as(不如……那样) She does not study so/as well as I do.她学习不如我好。
比较级 不同程度(用于两者比较) 比较级＋than＋……(比……) Jim is older than Luke.吉姆比卢克年长。
the＋比较级＋of＋the two＋其他(A是两者中较……的) Xiaoming is the taller of the two boys.小明是这两个男孩子中较高的一个。
特殊疑问词＋be＋比较级，A or B？ Which ball is bigger，the blue one or the red one？哪个球更大，蓝色的还是红色的？
比较级 程度加深 比较级＋and＋比较级(越来越……) He is growing taller and taller.他越长越高。
The＋比较级，the＋比较级(越……，越……) The more books she reads，the more she will understand.书读得越多，她懂得越多。
最高级 最高程度(用于三者或三者以上) the＋最高级＋可数名词单数＋of/in/among...(……中最……) Tom is the tallest student in his class.汤姆是他们班最高的学生。
one of the＋最高级＋可数名词复数＋in/of/among...(……中最……之一) Beijing is one of the biggest cities in China.北京是中国最大的城市之一。
the＋序数词＋最高级＋可数名词单数＋in(范围)(第几……) She is the second tallest girl in our class.她是我们班第二高的女生。
最高级 最高程度(用于三者或三者以上) 特殊疑问词＋(the)＋最高级，A，B or C？ Which season do you like best，spring，summer or autumn？你最喜欢哪个季节，春天、夏天或秋天？
特殊 比较级形式表最高级含义 比较级＋than＋any other＋单数名词(比任何一个人/物都……) He is taller than any other boy in his class.他比班上的其他任何男孩都高。
注意：
1.修饰形容词和副词原级的词(组)有：really，very，so，too，quite，a little，rather，pretty等。
2.修饰形容词、副词比较级的词(组)有：much，far，a lot，a little，a bit，even，any等。
3.比较级＋than＋any other＋名词(单数)(比较对象属同一个范围)
比较级＋than＋any＋名词(单数)(比较对象不属于同一个范围)
如：China is larger than any other country in Asia.中国比任何亚洲国家都大。
Shanghai is larger than any city in Shandong.上海比山东任何一个城市都大。
【归纳】 判定比较等级的方法
(1)当句子中有than时，通常要用比较级。
(2)比较级也有可能设置在一定的特殊句型中，可结合特殊句型的知识点进行记忆。
(3)当句中没有任何提示而选项为不同等级时，首先要根据句意来判断，同时注意一些修饰比较级的常用词，如句子中有表示程度的副词，如：a little 少许，少量；a bit 稍微，有点儿；a lot 很，非常；much 十分，非常；even 甚至；still 还，仍然；far 远的，遥远的；rather 相当；any 任何一个(或一些)等修饰时，用形容词比较级。
(4)三者或三者以上进行比较时，用最高级。这类句子中一般有表示范围的词of或in短语。
Qomolangma is ______(high) than any other mountain in the world.
The Sahara is _________(big) desert in the world.
The Caspian Sea is _________(deep) of all the salt lakes.
The Nile is _________(long) river in the world.
Practice
higher
the biggest
the deepest
the longest
1b-3a的比较级和最高级句子练习
5.China has ________(big) population in the world. It’s a lot _______(big) than the population of the US.
6.China is over 5,000years old. It has a much _______(long) history than the US. The US is not even 300 years old.
7.China is almost as_______(big) as the US, but it is _________(big) in Asia.
8.If we’re only talking about the parts from the Ming Dynasty, it’s about 8,850 kilometers long. This makes it the ________(long) wall in the world.
8.Badaling is the __________(famous) part of the Ming Great Wall.
the biggest
bigger
longer
big
the biggest
the longest
most famous
9.One of the world’s ___________(dangerous) sports is mountain climbing, and one of ___________(popular) places for this is the Himalayas.
10.Of all the mountains, Qomolangma rises ___________(high) and is the most famous.
11.Even ___________(serious) difficulties include freezing weather conditions and heavy storms.
most dangerous
the most popular
the highest
more serious
Fill in the blanks with the correct forms of the words in the box.
big much popular long old high
1. The Amazon River is one of the _______ rivers in the world. It’s a little _______ than the Yangtze River.
2. Qomolangma is 8,844.43 meters _____. It’s one of the most ________ places for serious mountain climbers.
longest
longer
high
popular
4a
3. No ocean in the world is as _____ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is _______ smaller.
big
older
much
太平洋
n. 大海；海洋
Write two comparisons about two topics. Write true facts.
Two rivers: _________________ and _________________
__________________________________________________________________________________________________________________________________________________________________________
e.g.
4b
The Yangtze River is almost as long as the Amazon River.
The Amazon is longer than the Yangtze, but the Yangtze River is the longest river in China.
the Yangtze River
the Amazon River
Two cities：__________ and __________
1.______________________________________
2.______________________________________
_____________________________________
Two animals：__________ and __________
1.______________________________________
2.______________________________________
_____________________________________
Pair work
Write five questions using comparisons. Then ask your partner your questions.
Writing
1. _________________________________
2. _________________________________
3. _________________________________
4. _________________________________
5. _________________________________
e.g.
4c
What is the highest building in our city
Who is the oldest people in our city
What is the most popular street in our city
What is the most delicious food in our city
Where is the busiest road in our city
Quiz
II. Multiple choice
1. My brother has ____ books than I.
A. much B. more
C. many D. most
2. The more you smile, the _____ you
will feel.
A. happy B. happier
C. happily D. more happily
5. She is ___ careful as I, but I’m ____than you. [2011潍坊]
A. as…much careful
B. so…more careful
C. as…much more careful
D. so…very careful
6. Mr Smith thought the Century Park was the second _____ in Shanghai. [2011上海]
A. large B. larger
C. largest D. very large
7. We can jump ___ on the moon than
on the earth.
A. more high B. much
C. high D. much higher
8. When he heard the good news, he
felt ____.
A. happier B. happiest
C. happy D. happily
9. The ___ he is, the ___ he feels.
A. busy; happy B. busiest; happiest
C. busier; happier D. busy; happily
10. I think English is as ____ as maths.
A. important B. more important
C. most important D. importanter
11. — What do you think of the dress
— Wonderful. I don’t think I can find
a ___ one. [2011河南]
A. good B. better
C. bad D. worst
12. That building is about 100 meters ___.
A. tall B. high C. taller D. higher
13. Jone Smith is ___ of the two young
men.
A. strong B. stronger
C. the stronger D. the strongest
14. Our classroom is ____ in the whole
school.
A. cleanest B. the cleanest
C. cleaner D. the cleaner
15. I know you are shorter than your brothers，but you run _________.
【2013内蒙古呼和浩特】
A. more faster B. fastest
C. more fast D. fast
16. Who runs ___, Lily or Michelle
【2013湖南株洲】
A. slow B. slower C. slowest
17. Of all the teams in NBA, I think the Los Angeles Lakers played ___ this year.【2010呼和浩特】
A. most successfully
B. the more successfully
C. very successfully
D. much more
1. Jack是他们班最高的男生。
Jack ___________ boy ___ his class.
2. 我现在感觉比昨天好多了。
I ____ much ______ than yesterday.
3. —北京最好的季节是哪个？
—我觉得是秋天。
III. Put the following sentences into English.
is the tallest in
feel better
—Which is the best season in Beijing
—I think it’s autumn.
Homework
1. To memorize the important phrases
and sentences.
2. To make some sentences using as … as,
... times … than, less than, more than
Thank You!中小学教育资源及组卷应用平台
人教新目标版英语八年级下册Unit7单元课时教学设计
课题 Period2Section A Grammar 单元 7 学科 英语 年级 八下
教材分析 本课时关于形容词和副词比较级和最高级用法。
学习 目标与核心素养 Knowledge objectives: as far as I know, ocean, the Pacific Ocean Skill objectives：1.The students can understand the passage. 2.To train the students’ cooperation with their partners. Emotional objectives:To enjoy the beautiful sights in the world. Thinking quality objectives: How to improve speaking and grammar skills.
重点 1.形容词和副词的比较级和最高级变化规则 2.物体之间的对比。
难点 形容词和副词比较级和最高级的用法
Teaching Steps:
Teacher’s activities Students’ activities Purposes
Step1 Lead in Watch the video about how to use the comparative and superlatives adjectives and adverbs. rules. Watch the video. Let the students how to use the comparative and superlatives adjectives and adverbs.
Step2 Revision Revise which is the highest in the world Which is the longest river in the world Ss answer the questions and revise the new words in this period. 1. Revise the names of the interests in the world. 2. Know how to use the comparative and superlative adjectives and adverbs. Let the students how to use the comparative and superlatives adjectives and adverbs.
Step 3 work on 4b 1.T: We know the Great Wall is the longest wall in the world. What about the longest river. Which is the longest river in the world Which is the second longest river in the world Which is the third longest river in the world Which is the longest river in China Compare the third rivers and write the comparisons about two rivers, the Yangtze and the Amazon River. Write more comparisons about other things like the two cities, two animals, two mountains and so on. The students answer: The longest river in the world is the Nile. The second longest river is the Amazon, and the third longest river is the Yangtze River. Read the comparisons in 4b, and write more comparisons between two cities, between two animals or between two mountains. To improve Ss’ oral English and English thinking. To improve students’ writing skills.
Step 4 work on 4a 1.Now we know the longest, the second longest and the third longest river in the world. Let’s know something about the mountains, the oceans and so on. 2.Ask the Ss to fill in the blanks with the correct forms of the words in the box. 3.check the answers. Do the exercises in 4a by themselves. Check the answers in 4a. To know the useful expressions of the different adjectives and adverbs. To consolidate the useful expressions by doing exercises.
Step5 Grammar focus Explain grammar focus. 1. Learn grammar focus. To consolidate the important sentences and expressions in this unit.
Step 6 Homework To memorize the important phrases and sentences. To make some sentences using as … as, --- times … than, less than, more than Write five questions using comparisons. Then ask your partner your questions. To consolidate how to use the important phrases and sentences.
Bb design Unit 7 What’s the highest mountains in the world Period 2 The Yangtze River is almost as long as the Amazon River. The Amazon is longer than the Yangtze. The Yangtze River is the longest. The Amazon River is the one of the longest rivers. No Ocean in the world is as big as the Pacific Ocean.
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