摘要:
本讲义聚焦八年级英语上册Unit 4 Section B 3a-3c核心知识点,以蓝鲸为主题载体,系统梳理最高级(largest and heaviest)、固定搭配(as much as, live up to)、动词用法(like doing, watch sb. do)等语言点,从动物特征描述到生态作用阐释,构建词汇、语法、语用的递进式学习支架。
该资料突出语言能力培养,通过高频短语中英互译和分层练习(单项选择、完成句子)强化语言运用,结合蓝鲸生态情境渗透思维品质,引导学生理解“play an important role”的深层含义。课中辅助教师系统授课,课后助力学生自主巩固,有效查漏补缺,提升学习效率。
内容正文:
八年级英语上册Unit4知识点-Section B 3a-3c讲义
【课文要点】
Part 1: The Blue Whale
1. The blue whale is the largest and heaviest animal on earth.
蓝鲸是地球上最大最重的动物。
- largest and heaviest 最大最重(最高级)
- on earth 在地球上
2. It can weigh as much as 200 tons.
它可以重达200吨。
- weigh v. 重(多少)
- as much as 多达……
- tons n. 吨
3. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see.
很多人喜欢看蓝鲸游泳,他们认为这是最美丽的景象之一。
- like watching 喜欢看(like doing)
- watch sb. do 看某人做某事
- one of the most + 形容词 + 复数名词 最……之一
4. Blue whales live in every ocean in the world except the Arctic.
蓝鲸生活在世界上除北冰洋以外的所有海洋中。
- every ocean 每一个海洋
- except prep. 除了……之外(不包括在内)
- the Arctic 北冰洋
5. They eat a lot, but they eat some of the smallest animals in the ocean.
它们吃很多,但它们吃的是海洋中一些最小的动物。
- eat a lot 吃得很多
- some of the smallest 一些最小的
6. Blue whales can live up to 90 years.
蓝鲸可以活到90岁。
- live up to 活到……
7. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea.
当蓝鲸在海里死亡时,它成为生活在海里和海洋周围许多动物的食物。
- dies at sea 在海里死亡
- becomes food for 成为……的食物
- many kinds of 许多种类的
8. This food lasts for over a year and it helps to create a lively and healthy ecosystem.
这些食物持续超过一年,有助于创造一个生机勃勃的健康生态系统。
- lasts for 持续
- over a year 超过一年
- a lively and healthy ecosystem 一个生机勃勃的健康生态系统
9. Blue whales play an important role in our world, so we must protect them.
蓝鲸在我们的世界中扮演着重要角色,所以我们必须保护它们。
- play an important role 扮演重要角色
- protect v. 保护
【高频短语汇总】(中英互译)
1. ________________________ 地球上最大最重的动物
2. ________________________ 重达200吨
3. ________________________ 多达
4. ________________________ 看某人做某事
5. ________________________ 最美丽的景象之一
6. ________________________ 在除……以外的每个海洋
7. ________________________ 最小的动物
8. ________________________ 活到90岁
9. ________________________ 在海里死亡
10. ________________________ 成为……的食物
11. ________________________ 许多种类的
12. ________________________ 持续超过一年
13. ________________________ 扮演重要角色
14. ________________________ 保护
【综合练习】
一、单项选择
( ) 1. The blue whale is the ______ animal on earth.
A. large B. larger C. largest D. most large
( ) 2. It can weigh ______ much as 200 tons.
A. so B. too C. as D. very
( ) 3. Many people like ______ blue whales swim.
A. watch B. to watch C. watching D. watched
( ) 4. Blue whales live in every ocean ______ the Arctic.
A. besides B. except C. beside D. including
( ) 5. They eat some of the ______ animals in the ocean.
A. small B. smaller C. smallest D. most small
( ) 6. Blue whales can live ______ to 90 years.
A. on B. in C. up D. for
( ) 7. When a blue whale ______ at sea, it becomes food for other animals.
A. die B. dies C. died D. dying
( ) 8. This food ______ for over a year.
A. last B. lasts C. lasted D. lasting
( ) 9. Blue whales play an important ______ in our world.
A. role B. roll C. rule D. ruler
( ) 10. We must ______ blue whales.
A. protect B. protects C. protecting D. protected
( ) 11. The blue whale is one of the most ______ things to see.
A. beauty B. beautiful C. beautifully D. beautify
( ) 12. Blue whales eat ______ of the smallest animals.
A. some B. any C. many D. much
( ) 13. A blue whale can weigh as much ______ 200 tons.
A. to B. for C. as D. with
( ) 14. The food helps to ______ a healthy ecosystem.
A. create B. creates C. created D. creating
( ) 15. Blue whales live up ______ 90 years.
A. in B. on C. to D. for
二、根据汉语意思完成句子(每空一词)
1. 蓝鲸是地球上最大最重的动物。
The blue whale is the ____________ and ____________ animal on earth.
2. 它可以重达200吨。
It can ____________ as much as 200 tons.
3. 很多人喜欢看蓝鲸游泳。
Many people like ____________ blue whales ____________.
4. 蓝鲸生活在除北冰洋以外的所有海洋中。
Blue whales live in every ocean ____________ the Arctic.
5. 它们吃海洋中一些最小的动物。
They eat some of the ____________ animals in the ocean.
6. 蓝鲸可以活到90岁。
Blue whales can live ____________ to 90 years.
7. 当蓝鲸在海里死亡时,它成为其他动物的食物。
When a blue whale ____________ at sea, it ____________ food for other animals.
8. 这些食物持续超过一年。
This food ____________ for over a year.
9. 蓝鲸在自然界中扮演着重要角色。
Blue whales play an ____________ ____________ in nature.
10. 我们必须保护蓝鲸。
We ____________ protect blue whales.
11. 它们创造了一个生机勃勃的生态系统。
They ____________ a lively ecosystem.
12. 蓝鲸可以重达200吨。
Blue whales can ____________ up to 200 tons.
13. 它们吃很多。
They ____________ a lot.
14. 它们生活在海洋中。
They ____________ in the ocean.
15. 蓝鲸是最美丽的动物之一。
Blue whales are one of the ____________ ____________ animals.
16. 它们的食物能持续一年。
Their food can ____________ for a year.
17. 蓝鲸对我们的世界很重要。
Blue whales are very ____________ to our world.
18. 我们应该保护海洋动物。
We should ____________ ocean animals.
19. 蓝鲸是地球上最重的动物。
The blue whale is the ____________ animal on earth.
20. 它们有助于维持生态平衡。
They help to keep the ____________ balance.
【参考答案】
一、单项选择
1. C 2. C 3. C 4. B 5. C 6. C 7. B 8. B 9. A 10. A
11. B 12. A 13. C 14. A 15. C
二、完成句子
1. largest; heaviest
2. weigh
3. watching; swim
4. except
5. smallest
6. up
7. dies; becomes
8. lasts
9. important; role
10. must
11. create
12. weigh
13. eat
14. live
15. most; beautiful
16. last
17. important
18. protect
19. heaviest
20. ecological
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