Unit 7 What's the highest mountain in the world? Grammar focus-4c（课件）(共有PPT36张）

(共36张PPT)
Unit 7
Unit 7
What's the highest mountain
in the world
Section A 3
Grammar focus~4c
Grammar focus
— What’s the highest mountain in the world 世界上最高的山是什么？
— Qomolangma.珠穆拉玛峰
— How high is Qomolangma
珠穆拉玛峰有多高？
— It’s 8,844.43 meters high. It’s higher than any other mountain.
它有8844.43米高，它比其他的任何的山都要高。
— Which is the deepest salt lake in the world 世界上最深的咸水湖是哪个？
— The Caspian Sea is the deepest of all the salt lakes.里海是最深的咸水湖。
— Did you know that China is one of the oldest countries in the world 你知道中国是世界上最古老的国家之一吗？
— Yes, I did. It’s much older than the US.
是的，我知道。中国比美国要古老的许多。
大多数形容词有三个级。
1. 原级:
Structure : as ... as... 像..….一样
e.g. Tim is as tall as Tom.
2. 比较级 (用于两者之间的比较):
Structure：形容词比较级＋ than ...
e.g. This box is bigger than that one.
形容词和副词的比较级和最高级
3. 最高级(用于三者或三者以上的比较):
Structure:
the + 形容词的最高级＋of / in ...
e.g. Tom is the heaviest in our class.
He is the most popular in our school.
规则变化
1) 一般情况下，单音节或双音节的形容词/副词比较级＋er， 最高级＋est。如:
clever — cleverer — cleverest
few — fewer — fewest
small — smaller — smallest 等。
形容词、副词的比较级和最高级
规则变化和不规则变化
2) 以e结尾的词，比较级＋r，最高级＋st 即可。 如：
nice — nicer — nicest
cute — cuter — cutest
large — larger — largest
3) 以辅音字母＋y结尾的变y为i＋er或est
如: easy — easier — easiest
happy — happier — happiest
再如：early, busy, heavy, dirty, lazy 也如此。
4) 重读闭音节，单辅音结尾的，双写这个辅音字母＋er 或 est的词：
① fat — fatter — fattest
② thin — thinner — thinnest
③ hot — hotter — hottest
④ red — redder — reddest
⑤ wet — wetter — wettest
⑥ big — bigger — biggest
5) 多音节和部分双音节的词需要在形容词
原级前＋more 构成比较级，＋the most 构
成最高级。如：
beautiful － more beautiful － the most beautiful
又如: delicious, popular, important, interesting, expensive, creative
双音节的词如:
careful － more careful － the most careful
useful － more useful － the most useful
少数单音节词也是这样，如：
pleased — more pleased — the most pleased
tired — more tired — the most tired
b) 不规则变化：
good — better — best
well — better — best
bad — worse — worst
many/much — more — most
far — farther —farthest (距离远)
far — further — furthest (程度深)
old — elder — eldest (长幼)
old — older — oldest (年龄)
三者或三者以上相比，表示最高程度时，用“the + 最高级”的结构表示。这种句式一般常有表示比较范围的介词短语。例如：
Zhang Hua is the tallest of the three.
He works (the) hardest in his class.
最高级的用法
2. 最高级可被序数词以及 much，by far，nearly，almost，by no means，not quite，not really，nothing like 等词语所修饰。例如：
This hat is by far／much／nearly／almost／not nearly／by no means／not quite／nothing like the biggest. How much did the second most expensive hat coat
比较级考点
① 比较级修饰问题
a little, a bit, even, still, much, a lot, far 等可修饰比较级。
e.g. Tom is a little taller than Jim.
This book is much more interesting than that one.
中考链接
② 同级比较
e.g. The weather in Beijing is colder than that in Xi’an.
Our school is bigger than yours.
3 “a/an + 比较级” 表示“又一，再一”
e.g. Lily has a doll, but she wants a bigger one.
4 隐性比较（没有than的情况）
e.g. Who runs faster, Lucy or Lily
You’d better come earlier next time.
He worked hard last term, but he works even harder this term.
5 越来越......
比较级 + and + 比较级
b. the + 比较级 + 句子，the + 比较级 + 句子
e.g. It’s getting colder and colder.
The more you exercise, the better you are.
2. 最高级考点
说明：形容词的最高级前必须加the；副词的最高级前省略the。
① 范围问题
e.g. Tom is the tallest student in the class.
Spring is the best season of the year.
② “......之一”问题
e.g. Beijing is one of the biggest cities in the world.
③ “the + 序数词 + 最高级”
e.g. I think he is the second tallest boy in his class.
3. 比较级和最高级的转换
e.g. Tom is the tallest student in the class.
= Tom is taller than any other student in the class.
= Tom is taller than all the other students in the class.
= No other students are taller than Tom.
总结：① any other + 名词单数
the other + 名词复数
② 否定 + 比较级 = 最高级
比较级 + 极限 = 最高级
同级比较
① as + adj./adv. + as
e.g. She is as thin as Lily.
He writes as carefully as Linda.
② not + as/so + adj./adv. + as
e.g. Tony didn’t run so fast as Carter.
1. Our family has bought a car so we can travel _____ than before.（2008陕西）
most easily B. less easily
C. easily D. more easily
2. My father told me a story last night. It is ____ one I’ve ever heard.（2009陕西）
the funniest B. funniest
C. funnier D. the funnier
学以致用
D
A
3. The _____ friends you have, the ____ you will be.（2010陕西）
A. more, happy B. many, happy
C. more, happier D. many, happier
4. When he heard a cry for help, he ran out as _______ as he could.（2011陕西）
hardly B. quickly
C. finally D. slowly
C
B
5. This place is not big enough for Lucy’s birthday party. We should find a _____ one.（2012陕西）
big B. small
C. bigger D. smaller
C
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
Exercises
1. She is ________ than ________.
A. busier / us B. busier / we
C. more busy / us D. more busy / we
2. Jane is ________ than Betty.
A. less taller B. less tallest
C. less tall D. not as tall
3. China is ________ country in the world.
A. the third largest B. the largest third
C. the third large D. a third largest
B
A
A
4. — Which is ____ season in Beijing
— I think it’s autumn.
A. good B. better C. best D. the best
5. — Which is ____, the sun, the moon or the earth
— The moon is.
small B. smaller
C. smallest D. the smallest
D
D
6. I study English as ____ as my brother.
A. hard B. harder C. hardest
7. Which is ____, a bicycle or a computer
A. expensive B. more expensive
C. the most expensive
8. The Yellow River is one of ______ rivers in China.
A. long B. longer C. the longest
A
B
C
Homework
1. To memorize the important phrases
and sentences.
2. To make some sentences using as … as,
... times … than, less than, more than