Unit 7 What’s the highest mountain in the world? SectionB 3a-Self Check (第5课时）教学课件

课件24张PPT。2020年春人教版 八年级下册英语 教学课件UNIT 7 SectionB 3a-Self Check（第 5 课时）Do you know anything about the whales? Free talk very large,
live in the sea 鲸是世界上现存的最大的哺乳动物，终生生活在水中，鲸形状像鱼，鼻孔在头的上部，用肺呼吸。体长可达三十米。
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。3aRead the following words and phrases about whales. Put themin 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
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 like candles and soap5 8723 11 1 6 12 4 9 10Write 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 of whales are in danger because…
We should protect whales from…
I think people should/shouldn’t…
One possible version: Whales are huge animals. They live in the sea and eat small fish and other sea life. One interesting fact is that whales can jump high out of the water. Some kinds of whales are in danger because humans catch them for meat, fat and oil, and use whale parts to make candles and soap. Whales are also in danger because of water pollution. We should protect whales by making rules on whale protection and not putting rubbish into the sea. I think people should learn more about whales.
Let's share Self Check1. Complete the chart.higherhighestmore dangerous most dangerous longerlongestmore popular most popular 2. Match verbs and objects. Then add one more object
to each list.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.crowdedstronger language points1.catch... for...为……而捕捉……
People catch tigers for their fur and bone.
2.jump out of...跳出……/从……中跳出
Fish often jump out of water to take in fresh air.
3. rules on ... protection ……的保护法
We must make rules on wild animal protection.
4. stop doing...与stop to do... 停止做……；停止（……）去做……
Stop working to have a rest. language points形容词、副词的比较级和最高级大部分形容词、副词有比较级和最高级的变化：
原级——比较级——最高级。
1. 构成
形容词的比较级和最高级的构成有规则变化和不规则变化两种。 language points1)绝大部分双音节和单音节形容词的比较级和最高级变化： language points2) 大部分多音节形容词比较级和最高级的构成是在原级前加
more或most。 language points3) 不规则变化 2. 用法
比较级的基本用法：
用于两者之间做对比，通常与than连用。如：
This lesson is more difficult than that one. 这课比那课难。
She is heavier than Kate.她比凯特重。 language points最高级的基本用法：
常用“最高级+比较范围”结构，比较范围常用of, in, among引导的短语表达。
如：
China is one of the oldest countries in the world.
中国是世界上历史最悠久的国家之一。
The book is the most interesting of all the books.
这本书是所有书中最有趣的。 language points1. My brother is _____ more outgoing than me.
A. many B. little C. much D. very
2. Which city is _____, Beijing, Shanghai or Fuzhou?
A. beautiful B. more beautiful
C. the most beautiful D. beautifulest
3. _____ children there are in a family, _____ their life will be.
A. The less, the better B. Fewer, richer
C. The fewer, the better D. less, better I.选择最佳答案II.用括号内单词的适当形式填空。1. Jim is very _______. Li Lei is ________ than Jim. (hungry)
2. Kate’s mooncakes are ___________ of all. (nice)
3. Your box is _______ than mine. But his is ____________ of the three. (heavy)
4. This TV play is _______ than that one. (good)
5. This picture is _________________ of the four. (beautiful)
hungryhungrierthe nicestheavierthe heaviestbetterthe most beautiful6.Tom works as a ________ (keep) in a big factory.
7. His grandfather got a serious ________(ill) and died.
8. Protecting the wild animals in ________(endangered) is everyone's duty.
9. There are only much ________ (few) 3,000 pandas ________(live) in the world.
10. We all hope there will be ________(many) pandas in the future. keeperillnessdangerfewerlivingmore Summary1. Write a passage about another endangered
animal you know according to 3a and 3b.
2. Review Unit7 for a test.Homework