Unit 5 Understanding ideas(40页)课件 204-2025学年高一英语外研版(2019)必修第一册

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名称 Unit 5 Understanding ideas(40页)课件 204-2025学年高一英语外研版(2019)必修第一册
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科目 英语
更新时间 2024-10-10 16:54:06

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(共40张PPT)
Unit 5 Understanding ideas
The Monarch's Journey
黑脉金斑蝶的旅程
阅读课件
Grasp the new words and expressions such as charity,annual,measure,in search of and so on.
Grasp the general idea for the whole passage.
Be able to use different basic reading strategies like prediction/skimming/scanning correctly in their reading process.
Develop a habit of protecting the environment and animals.
Learning objectives
UNIT 5
charity charity n.慈善机构,慈善团体 65
* monarch / m n k/ n.君主,国王 66
monarch butterfly黑脉金斑蝶 66
Atlantic / t l nt k/ adj.大西洋的 66
whale /we l/ n.鲸 66
annual/ nju l/adj.一年一度的,每年的 66
* migration /ma ɡre n/ n.迁徙 66
* migrate /ma ɡre t/ v.移栖,迁徙 66
seek /si:k/v.寻找,寻求 66
professor /pr fes / n.教授 67
measure / me /v.量,测量 67
position /p z ( )n/ n.位置 67
determine /d t m n/v.测定,确定 67
eventually / vent u li/ adv.终于,最终 67
Words and expressions
solution /s lu ( )n/n.解决,解决方法 68
* mystery / m st( )ri/n.难以理解的事物,谜68
amazing / me z / adj.惊人的,了不起的 68
crash /kr / v. 暴跌 68
per cent /p sent/ n.百分比 68
destroy/d str / v.破坏,毁掉 68
chemical / kem k( )l/ n.化学品 68
* caterpillar / k t p l /n.毛虫(蝴蝶等昆虫的幼虫) 68
creature / kri t / n.生物,动物 68
survive /s va v/ v.活下来,幸存 68
effect / fekt/ n.影响,结果 69
flow chart流程图,作业图 69
Before
Reading
Understanding Ideas
Now let’s first do some preparation work.
Man and nature
人与自然
Man and self
人与自我
Man and society
人与社会
Man and nature
人与自然
What’s the relationship between them
Man and society
人与社会
Man and self
人与自我
contents page
We humans are in a people-centraled world.
以人为中心的世界里
目录页
In this unit, we should learn to keep a harmonious relationship with animals and plants.
Man and nature
人与自然
And what’s the relationship between man and animals
Man and society
人与社会
Man and self
人与自我
pet owner and pet
blind people and guide dog (life assistant)
horsewoman and horse (competition companion)
owner and livestock
B1 U5 Into the wild荒野生存
The Monarch's Journey
Now look at the title, what the meaning of “The Monarch’s” here
The Monarch’s = The Monarch butterfly’s
1.butterflies in one’s stomach
情绪紧张,心里发慌
2.butterfly stroke
蝶泳(运动项目)
3.butterfly lovers
化蝶;梁山伯与祝英台(剧名)
The Monarch's Journey
黑脉金斑蝶的旅程
回顾与拓展
b
a
c
d
e
f
Look at the pictures and choose the animals that migrate.
monarch butterfly
Siberian crane
Atlantic salmon
red panda
killer whale
African lion
黑脉金斑蝶
西伯利亚鹤
大西洋鲑鱼
红熊猫
虎鲸
非洲狮




Which animals can migrate
salmon / s m n/ 鲑鱼,三文鱼
The animals that migrate include monarch butterfly, Siberian crane, Atlantic salmon, and some types of killer whales.
a
b
c
e
Do you know any other animals that migrate
wild goose(大雁)
gnu(角马;牛羚)
zebra(斑马)
Monarch butterfly
It is the only butterfly
that migrates on earth.
Fast
Reading
Reading Comperehension
Background
Look at the pictures and predict what the passage is about.
Monarch butterflies' migration
Monarch butterflies (黑脉金斑蝶)are a common summer sight in the northern United States and Canada. What makes monarchs particularly interesting is that they migrate(迁徙)---all the way south to California or Mexico and back . They are thought to be the only insect that does this .
Every year millions of Monarch butterflies go to the high mountains of Mexico for hiberation(冬眠). They make a 4,000 kilometer journey back north three months later. We leave you this week with a look at this amazing trip . We look forward to seeing you here again next week for another edition of America’s . Now thanks for watching. Out of the Mexcan forests. Over the mountains of California. And all the way to Canada. The monarch butterfly makes its way to Canda. The Monarch butterfly makes its way north for the summer. But this year, there will be far fewer butterflies reaching their final destination(目的地,终点站). 4 out of 10 will die because of lack of food. But despite dwindling() in numbers, this dreamlike migration of the Monarchs remains a spring wonder. Scientists are asking for their path to be presevrved(保存,记录).
When spring comes, they begin their long journey north . The question is often asked whether every butterfly makes the round-trip journey every year. And the answer is no. The average monarch lives about nine months. So scientists learn about monarchs'migration by catching and making marks on the insects . By recatching a monarch with such a mark and noticing where it came from , the next scientist can get to know things like the butterfly's age and its routing (路线).
Recall the details of the video and try to know more about the Monarch .
黑脉金斑蝶(帝王蝶)是美国北部和加拿大夏季常见的景观。特别让我们感兴趣的是,黑脉金斑蝶会迁徙——一路向南迁徙到加利福尼亚或墨西哥,然后再回来。黑脉金斑蝶被认为是唯一能做到这一点的昆虫。
每年都有数百万只黑脉金斑蝶前往墨西哥的高山冬眠。三个月后,他们踏上了4000公里的北上之旅。这周我们带你去看看这次奇妙的旅行。我们期待着下周在这里与您再次见面。感谢收看。在墨西哥的森林,跨越过加利福尼亚群山,沿途一直到加拿大。黑脉金斑蝶正飞往加拿大。黑脉金斑蝶向北方飞去避暑。但是今年,到达最终目的地的蝴蝶要少得多。10只中有4只会因为缺乏食物而死亡。尽管数量在减少,黑脉金斑蝶梦幻般的迁徙仍然是春天的奇迹。科学家们请求要保护他们的路径。
当春天来临时,它们开始了向北的长途旅行。人们经常问是否每只蝴蝶每年都要往返一次。答案是否定的。黑脉金斑蝶平均寿命约为9个月。因此,科学家们通过捕捉并在昆虫上做记号来了解他们的迁徙。通过重新捕捉有这种标记的蝴蝶,并注意到它的来源,下一位科学家就可以了解蝴蝶的年龄和路线等信息。
Recall the details of the video and try to know more about the Monarch .
U.S.A
Mexico
Northbound
Southbound
1st generation
2nd generation
3rd generation
4th generation
4th generation
continued
The Migration of Monarch Butterfly.
The Monarch’s
Journey
Title
The topic sentence
Picture
A. The monarch's migration.
B. The reasons for monarch's migration.
C. Mexico's monarch.
The main idea of a passage can be found from its title, the topic sentences, or even the pictures.
Tips
Go through the passage quickly and get its main idea. (1 minute only!)
Read the text quickly and match the main idea of each part.
Para 1:
Para 2:
Para 3:
Para 4:
Para 5:
a. Protection of the monarch
b. Trouble of the monarch & the reasons
c. Migration of the monarch
d. Finding of the migration
e. Definition(定义) & reasons of migration
3 min
Careful
Reading
Reading Comperehension
Para.1
①What is migration
Migration is an ______ movement in which many
animals move from __________________.
②Which one is NOT the reason why animals migrate
A. to find something to eat B. to look for a company
C. to search for warmer place D. to go travelling
food
partner
weather
annual
one place to another
The definition(定义) & reasons of migration
Tip:
阅读中常见选项的同义改写
Read for detailed information 阅读详细信息
Read paragraph 2 and answer the questions.
1. What does monarch butterfly look like
Beautiful insects with fine black and orange wings.
2. During the migration, where do they start and go to How long is the journey
They manage to travel around 4,000 kilometers south and find their way to California or Mexico.
Para.2
Para.2
When and where do they migrate
Routine
(惯例)
Time: ___________________
Place: Travel around 4000 km (_______) to California or Mexico
Every autumn/fall
south
Migration of the monarch
a. The monarch butterfly is able to tell _____________.
b. Using these two pieces of information, the monarch butterfly determines ____________.
c. The monarch butterfly measures ____________________ with its eyes.
d. The monarch butterfly reaches___________________.
d
the time of day
the way to go
the position of the sun
the places where it will spend the winter
a
c
b
Cause-effect flow chart
Para. 3 Complete the cause-effect(因果) flow charts P69 Ex4
Para. 3 Complete the cause-effect(因果) flow charts P69 Ex4
the time of day
the way (to go)
the position of sun
the places (where it will spend the winter).
a
c
b
cause
effect
Finding of the migration
e. Humans _________ trees.
f. The ________________________________
where monarchs can be found is destroyed.
g. Humans use chemicals that _____________ that monarch caterpillars eat.
h. The monarch butterfly’s population ___________________________________ in the last few years.
cut down
natural environment of many places
kill the plants
has crashed (by as much as 90 per cent)
h
e
g
f
Read paragraph 4 and fill in the blanks
Cause-effect flow chart
Para. 4
Para. 4
cut down
natural environment of many places
kill the plants
has crashed
e
g
f
cause
effect
Trouble of the monarch & the reasons
Comprehend and analyze(理解与分析)
Human activity is the main reason why the number of monarch butterflies is falling.
In many of the places where the butterfly can be found, people are destroying the natural environment.
TROUBLES
Its’ population has crashed by as much as 90 precent in the past ten years.
lead to
(attributive clause1)
(attributive clauses2)
Para. 4
What measures can be taken to solve these 2 problems
Para.5 What measures do people take to help protect the monarch butterfly
Raise a greater awareness
of this creature
B. Work together to record its
migration
C. Make sure that there are
enough plants to feed on
D. All of the above
Measure 1
Measure 2
Measure 3
3 measures
Protection of the monarch
Further
Reading
Reading Comperehension
The Monarch's Journey
when/ where/ why
how
trouble
solution
1.tell the time of the day;
2.determine the way to go;
3.measure the position of the sun
The population has crashed by 90%
1.avoid cutting down trees and plants;
2.reduce the usage of chemicals;
3.limit human activity
autumn; the south of America;
to seek for food、partners、warmer weather
The monarch’s migration
Scientists’ finding about the monarch
Human’s protection about the monarch
This passage is about the Journey related to _______________
Monarch butterfly
Trouble of the monarch & the reasons
The definition(定义) & reasons of migration
Summary
1 What impresses you most about the monarch butterfly
2 What can people do to help protect the monarch butterfly
Think & Share
They can travel around 4,000 kilometres south and find their way to California or Mexico.
We should take measures to protect the monarch butterfly from being endangered. Firstly, we can avoid cutting down trees and plants that they need, so that they can have a better natural environment to live in. Secondly, we should reduce the usage of chemicals. Most importantly, laws should be set up to limit human activity to protect the number of monarch butterflies.
In a word, we protect the monarch butterfly by planting more trees, using fewer chemicals and providing enough natural environment to live in.
1.Where is the passage taken from (课本p68 ex3)
A. In a scientific research paper about the monarch butterfly’s migration.
B. In a popular nature magazine introducing the monarch butterfly.
C. In a travel leaflet (小册子) encouraging people to visit North America.
科学研究论文
受欢迎自然杂志
旅游宣传册子
2.What ’s the writing style of the passage
A. Narration(记叙文)
B. Argumentation(议论文)
C. Exposition(说明文)
D. Practical writing (应用文)
Further
Practice
Reading Comperehension
The 1._________ (migrate) of the North American monarch butterfly can be considered as the most 2. __________ (wonder) one in nature. In other words, it’s 3. ___ wonder!
Every autumn, these beautiful insects 4. have black and orange wings manage to travel to California or Mexico. At first, no one knows how they migrate. 5.________, a team found the answer eventually. The reasons why the monarch can reach the destination 6._________ (correct) are that not only are they able to tell the time of the day, but also they have the ability 7.___________ (determine) the position of the sun.
The current situation is that the number of the monarch is falling, which leads 8.___ the awareness of this creature. Human 9.
(behave) have an effect on them, but people are taking 10.__________ (measure) to save them.
migration
wonderful
a
that/which
However
correctly
to determine
to
behaviors
measures
1.charity
2.annual
3.seek
4.measure
5.position
6.determine
7. eventually
8.solution
9. amazing
10. crash
11.destroy
12.survive
13.effect
14.accommodation
15. idiom
n.慈善机构,慈善团体
adj. 一年一度的,每年的
v. 寻找,寻求
v. 量,测量
n. 位置
v. 测定,确定
adv. 终于,最终
n. 解决,解决方法
adj. 惊人的,了不起的
v. 暴跌
v. 破坏,毁掉
v. 活下来,幸存
n. 影响,结果
n. 住处,工作场所
n. 习语,成语
Review
the new
words
Do you remember the meaning of the words Let’s try!
16.authority
17.source
18. found
19. button
20.recover 21.shock
22. element
23.variety
24.path
25.stare
26.encounter
27.concentrate
28.reaction
29.freeze
30. breathtaking
n. 当权,权力
n. 来源,出处
v.创立,创建
n. 按钮
v. (从糟糕经历中)恢复
n. 吃惊,震惊
n.基本部分,要素
n. 多样化,变化
n. 小径,小道
v.凝视,盯着看
n. 意外地遇见,与……邂逅
v. 专注,专心
n. (对某一情形或事件的)反应
v. 突然停止,呆住
adj. 令人惊叹的
Do you know the meaning of the words Let’s try!
Well
done!
1. Read the text aloud and
try to remind the main ideas.
2. Discuss the measures to protect
the monarch butterfly.
3. Remember the new words.
Homework