外研版（2019）必修 第一册Unit 5 Into the wild Understanding ideas 课件(共16张PPT)

(共16张PPT)
Unit 5 Into the wild
-Understanding ideas
migrate
/ma 'gre t/
Guess what they are doing.
Pre-reading
What does the video mainly talk about
It talks about monarch butterflies' amazing migration to Mexico.
Watch and think:
Skim and match the main ideas with each part.
b) The definition and background of the monarch's migration
Paragraph
1-2
Paragraph
3-4
Paragraph
5
a) The mystery of monarch's migration & influences of human activities
The solution to monarch's survival
Content
4 mins
Title, beginning & ending
images, charts, tables…
First and last sentences of paragraphs
Skimming tips:
Skimming: Main ideas
How to skim
如何略读？
Title
Beginning & Ending
images, charts, tables…
First and last sentences of paragraphs
Skimming: Main ideas & Structure
Skim and match the main ideas with each part.
b) The definition and background of the monarch's migration
Paragraph
1-2
Paragraph
3-4
Paragraph
5
a) The mystery of monarch's migration & influences of human activities
The solution to monarch's survival
Content
4 mins
Title, beginning & ending
images, charts, tables…
First and last sentences of paragraphs
Skimming tips:
文体：Expository Writing 科普类说明文
Skimming: Main ideas
Many animals move from one place to another at certain times of the year. This annual movement is called migration. They migrate to find food, seek a partner, or in search of warmer weather. One of the most wonderful migrations in nature is that of the North American monarch butterfly.
Why do animals make a migration
Para. 1
1
Definition & Background
Para. 1-2
Mystery & Influence
Para. 3-4
Solution
Para. 5
Scan Para. 1 and answer the following questions:
How to scan
Find the key words in the question, and locate them in the article.
Definition & Background
Para. 1-2
Mystery & Influence
Para. 3-4
Solution
Para. 5
About the journey:
When do the monarchs start to migrate
Where do the monarchs migrate
Scan Para. 2 and answer the following questions:
1.5 mins
How to scan
Find the key words in the question, and locate them in the article.
When
- Autumn
Where
- California or Mexico
Check your answers
How do monarchs migrate
What is the problem that monarchs are facing
Why does the problem occur
Definition & Background
Para. 1-2
Mystery & Influence
Para. 3-4
Solution
Para. 5
3 mins
Para.3 Complete the cause-effect(因果) flow charts.
Scanning:
How do monarchs migrate
因果关系
流程图
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
Scanning:
Why does the monarch population decrease
cut down
natural environment of many places
kill the plants
has crashed
e
g
f
cause
effect
Human activity makes the monarch butterfly’s population crash
Para.4 Complete the cause-effect(因果) flow charts.
Definition & Background
Para. 1-2
Solution
Para. 5
Mystery & Influence
Para. 3-4
What measures do people take to help protect the monarch butterfly
Scanning: Details
Think Share
What other factors that destroy the monarchs’ habitat.
What can people do to help protect the monarch butterfly
deforestation
exhaust emission
urbanization
forest fire
overpopulation
food shortage
factors
What can people do to help protect the monarch butterfly
Plant native milkweed species to feed on
Do not use chemicals that kill the plants as much as possible
Protect the natural environment
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