Unit 7 What's the highest mountain in the world? Section B 3a-Self-check 课件(共32张PPT)

(共32张PPT)
短语归纳
1.the most dangerous 最危险的
2. the most popular 最流行的
3.the highest 最高的
4.be dangerous to do 做某事是危险的
5.take in air 吸入空气
6.the main reason 主要的原因
7.risk one's life 冒生命之险
8.the spirit of ..... 的精神
9. achieve one's dream 实现梦想
10. the forces of .....的力量
11. as far as I know 据我所知
12.the population of ....的人口
13.feel free 随便
14.prepare...for... 为...而准备
15.walk into 走路时撞着
16.run over to 跌跌撞撞跑向
17. fall over 绊倒
18. a symbol of .... 的象征
19. be awake 醒了
20. 300 or so 大约300
21. every two years 每两年
22.the habit of ... 的习惯
23. an endangered animal
一种濒危动物
24. a way to do 做某事的方法
25. die from 死于
26. in the future 在将来
27.around the world 世界各地
28.be special to sb 对某人特别
29.with excitement 兴奋地
30.in fact 事实上
Unit 7
What's the highest mountain
in the world
Section B
3a-Self-check
Do you know the whale
Please watch the vedio!
鲸的体型是世界上存在的动物中最大的，鲸是终生生活在水中的哺乳动物，对水的依赖程度很大，以致它们一旦离开了水便无法生活，鲸形状像鱼，鼻孔在头的上部，用肺呼吸。体长可达三十米，是现在世界上最大的动物。
对于鲸鱼你知道多少？
鲸为适应水中生活，减少阻力，它们的后肢消失，前肢变成划水的浆板。身体成为流线型，酷似鱼。因而它们的潜水能力很强，小型齿鲸可潜至100-300米的水深处，停留4-5分钟，长须鲸可在水下300-500米处待上1小时，最大的齿鲸--抹香鲸能潜至千米以下，并在水中持续2小时之久。
学习目标
1.熟练掌握单词huge,protect的用法.
2.能够熟练掌握形容词或副词的比较级和最高级.
3.能运用所学的知识写一篇有关保护珍稀动物和大自然的作文.
自主学习一（3min）
内容：3a
时间：3min
要求：大声朗读表格中的句子根据描
述内容分类。
Read the following words and phrases about whales. Put them in the correct place in the chart.
1. Humans catch whales for meat, fat and oil
2. Eat small fish and other sea life
3. Jump high out of the water
4. Rules on whale protection
5. Huge
6. Water pollution
3a
1.big最通俗、常用,强调比正常程度、范围及规模的标准大,常用于修饰人、物或数量。反义词是little和small。
2.huge强调尺寸、体积”庞大”,容量和数量”巨大”。指体积时,比large所指的体积大,但不强调重量。
3.large强调远远超过标准的”大”,可指”数量、容量、体积和面积的大”,比big正式,反义词是small。
7. Live in the sea
8. Some kinds have teeth
9. Learn more about whales
10. Stop putting rubbish into the sea
11. Sing songs
12. Whale parts sold to make things
likes candles and soap
What do they look like？
Where do they live
What do they eat
What can they do
Why do some of them have to be protected
How can we protecte them
5 8
7
2
3 11
1 6 12
4 9 10
Read the following words and phrases about whales. Put them in the correct place in the chart.
3a
自主学习二：(5min)
运用3a的信息及3b给出的句子提示，写一篇保护鲸鱼的文章
Write a paragraph about whales and why they need to be protected. Use the information in 3a. Then make a poster.
3b
Whales are... They live in ... They eat.... They can ....
One interesting fact is .... Another interesting fact is ...
Some kinds os whales are in danger , because ...
We should protect whales from ....
I think people should/ shouldn't....
protect.....from... 保护.... 免受....
eg.Wearing sunglasses can protect your eyes from the sun.
Whales are huge animals. They live in the sea. They eat small fish and other sea life. One interesting fact is jumping high out of water Another interesting fact is they can sing songs
Some kinds of whales are in danger because humans catch them for meat, fat and oil..
We should protect whales from water pollution. I think people should stop putting rubbish into the sea, make rules on whales protection and learn more about whales.
clever--cleverer--cleverest
nice--nicer--nicest
easy--easier--easiest
fat--fatter--fattest
thin--thinner--thinnest
beautiful--more beautiful--the most beautiful
careful--more careful--the most careful
good/well--better--best
bad--worse--worst
many/much--more--most
仔细观察，试着总结规律！
火眼精金
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,
双音节的词如:
careful － more careful － the most careful
useful － more useful － the most useful
far — farther —farthest
far — further — furthest
old — elder — eldest
old — older — oldest
Self check
1. Complete the chart.
Adjectives Comparatives Superlatives
high
dangerous
long
popular
higher
highest
more dangerous
the most dangerous
longer
longest
more popular
the most popular
重点回顾
形容词与 副词的最高级的用法
形容词和副词最高级常用于三者三者以上的人或事之间的比较。在表示最高程度即表示其中一个在某方面“最....”时使用，在句中使用时，形容词最高级前面通用the .句中常含有表示比较范围的介词of 或者in ;of后面一般接表示一群人或事物的代词或名词，in 后面一般接表示单位或场所的名词。
最高级的句子结构
1. 主语+be/v+(the)+最高级+in/of....
在某一范围内或某类人或物中最.....
This is the highest mountain in China .
2. 主语+be+one of the +形容词最高级+n.复+in/of....
表示“...是某一范围内或某类人或物中最....
It is one of the widest roads in our town
3.主语+be+the +序数词+形容词最高级+n单.+in/of ...
表示.... 是某一范围内或某类人或物中的第.... 的
Li Ming is the second tallest boy in our school.
4.疑问词+be/v +(the)+最高级，A,B or C
在A,B ,C 中，..... 最.....
Which is the biggest , the moon , the earth or the sun
注意：
形容词最高级做表语时，the有时可以省略。
He is (the) strongest.
副词最高级前的the可以省略。
Jim jumps (the )highset.
最高级前有名词所有格或物主代词时不再用the
She is my best friends
最高级与比较级之间的转换
形容词和副词的最高级可以和“比较级+ than+any other +n. 单数 进行互换
比较级+than+the other+ 可数名词
Tom is the tallest in his class =Tom is taller than any other student in his class.
Tom 在他班里是最高的。 Tom 比他班里其他任何一个都高。
Tom is taller than the other students in his class.
Tom 比他班里的其他学生都高
活学活用
1. -Which country has the _____ population in the world.
- China . It a little ____ than that of India.
A. most most B. biggest bigger C. more most
2. Winter is ____ season, and winter vacation is ___ than summer vacation .
A. colder ;the shorest B. the coldest; short
C. the coldest ;shoter D. colder; shoter
3This temple is one of ____ buildings in the town.
A. old B. older C. oldest D. the oldest
B
C
D
修饰人口的单词 big large small
one of + the + adj 最高级+n. 复
4. Bob jumps farther than ____ in his class.
A. any other boys B. the other boys C. any boy D other boys
B
2. Match verbs and objects. Then add one more object to each list.
Verbs Objects
1. reach a. my life, my money,…
2. achieve b. the top of a mountain, the library,…
3. risk c. my dream, success,…
my health
the ends
the farmhouse
3. Circle the correct word and /or fill in the blank with the correct form of the word in brackets for each sentence.
1. An elephant weighs (few/many) times more than a dog.
2. An adult panda can eat (much/a little) more than a cat.
3. Canada is a (little/lot) less ______________ (crowded) than China.
4. A tiger is (much/a little) _________ (strong) than a man.
crowded
stronger
小测：
1. I jumped _____than Bill in the sports meet last year.
A.high B.higher C.highest D.the highest
2. Em ma looked after her pet dog____ of all her friends.
A.careful B.most careful
C.more carefully D.the most carefully
3. Bob jumps farther than____ in his class.
A.any other boys B.the other boys
C.any boys D.other boys
4. Here are some rules on whale________(protect).
5. We should stop____(put) rubbish into the sea.
B
D
B
protection
puuting