(共34张PPT)
Unit 5
Unit 5
Into the wild
To skim the passage by focusing on key words to get the main idea
To understand the monarch butterfly’s features and how it migrates
To know why the number of monarch butterflies falls and what people should do to improve the condition
Look at the following pictures.
Can you use one or two words to describe their action
migration
What phenomenon is mentioned in the video
Animal migration
Animal migration refers to the movement of a species (物种) from one habitat (栖息地) to another in response to seasonal changes to the environment. Often covering great distances and involving huge numbers of animals, it can be fascinating to observe. Migration happens in all parts of the animal kingdom, from fish and insects to birds, reptiles (爬行动物) and mammals (哺乳动物).
What is “animal migration”
Do you know the names of these animals
monarch butterfly
Siberian crane
Atlantic salmon
red panda
killer whale
African lion
Look at the pictures and choose the animals that migrate.
The animals that migrate include monarch butterfly, Siberian crane, Atlantic salmon, and some types of killer whales.
Talking
Now talk about what you know about animal migration.
You can think about the following questions in your talking:
Why do animals migrate
When do animals migrate
Can human activities influence on animal migration How
1. What is the main idea of the passage
A. The monarch butterflies’ migration.
B. The reasons for monarch’s migration.
C. Mexico’s monarch.
2. What’s the type of this passage
A. Narration (记叙文) B. Argumentation (议论文)
C. Exposition (说明文) D. Practical writing (应用文)
3. Match the main ideas with each paragraph.
Para. 1
Para. 2
Para. 3
Para. 4
Para. 5
a. How do people solve the trouble
b. What is migration
c. What is monarch’s serious trouble
d. When & where did the monarch migrate
e. How does the monarch migrate
4. How many parts can this passage be divided into and what are they about
Structure
Para. 1
Definition
Paras. 2-3
Mystery
Para. 4
Trouble & Reasons
Para. 5
Measures
Read the passage and find out what mystery the scientists have solved.
The scientists have solved the mystery of how monarch butterflies manage to travel a long distance and find their way to their destination.
In a scientific research paper about the monarch butterfly’s migration.
In a popular nature magazine introducing the monarch butterfly.
In a travel leaflet encouraging people to visit North America.
Choose where you are most likely to find the passage.
Why do you choose that answer
科研论文
自然杂志
旅游手册
From the arrangement of the passage, which paragraphs do you think are more important in the passage Why
paragraphs 3, 4 and 5
The writer uses longer paragraphs to tell us more information — the monarch butterfly’s migration, trouble and people’s efforts to improve its conditions.
Read the text again and fill in the blanks in the chart.
The research on the monarch butterfly
The ________ of its migration
Its population
（to be continued）
mystery
It can ________ its ideal place.
People are destroying the natural environment.
People cut down trees.
The ________ are killed and there is no food for monarch caterpillars.
It has the ability to tell the _________.
It can measure the ________ of the sun.
The population of the monarch has decreased by _________.
time
position
plants
reach
90%
Choose the right answers according to the text.
1. What can we learn about monarch butterflies from para. 2
A. Their migration begins in summer.
B. They can reach their destination easily.
C. They manage to find their way to Washington.
D. Their migration puzzled scientists for some time.
2. How does the monarch know the position of the sun
A. By using its eyes.
B. Through its amazing wings.
C. Through its sharp hearing ability.
D. By measuring the height above the ground.
3. Why is the population of monarch butterflies falling
A. They are killed by chemicals.
B. Their habitats are being destroyed.
C. Most of them can't survive during migration.
D. Monarch caterpillars are eaten by other creatures.
4. What is the author's purpose in writing the text
A. To show people's concern for the monarch.
B. To discuss the monarch's ability to migrate.
C. To raise public awareness of saving the monarch.
D. To praise people's efforts to protect the monarch.
Complete the sentences with expressions from the passage. Then use the sentences to complete the “cause-effect” flow charts.
The monarch butterfly is able to tell _____________.
b. Using these two pieces of information, the monarch butterfly determines _______________.
the time of day
the way to go
c. The monarch butterfly measures ____________________
with its eyes.
d. The monarch butterfly reaches _______________________
_____________ .
the position of the sun
the places where it will spend the winter
a / c
c / a
b
d
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
g / e
f
因果关系在语篇中的运用
“本文中有两个段落使用了因果关系手段来组织句子，分别是第______和第______段。
第四段使用了明确的因果关系手段来组句成篇。 句子“Its population has crashed by as much as 90 per cent in the last few years.”和句子“Sadly, human activity is the main reason why the number of monarch butterflies is falling.”之间的关系属于结果—原因关系。
the main reason why是表达因果关系的标记性词语。
四 五
第五段中并没有使用明确的表示因果关系的表达，而是主要依靠隐含的因果关系来组织句子。如本段首句The research on the monarch's behaviour has however led to a greater awareness of this creature则是通过led to表述句内因果关系的。
as a result of, as a result, as, because of, because, for that reason, for this reason, for, since, so, thanks to, therefore, thus
表达因果关系的短语
Fill in each blank with one proper word according to the text.
Every 1. ____________, millions of North American monarch butterflies, which feature beautiful black and orange 2. ____________, fly around 4, 000 km south to California or Mexico for the winter. Until recently it hasn't been known that they can find their way by figuring out the time of day and the 3. ____________ of the sun in the sky.
autumn
wings
position
This knowledge comes at a time when the monarch is in danger. Its population has dropped by 4. ____________ per cent, mostly due to human activity. Scientists' research on the monarch has however drawn public attention to this creature, with people working together to improve the monarch's chance to 5. ____________.
90
survive
1. What impresses you most about the monarch butterfly
2. What can people do to help protect the monarch butterfly
Tips: You can discuss the questions with your group members. Then one answers the questions, and others add up.
1. What animals do you know migrate in your areas Why do they migrate
2. What challenges do you think animals face during migration
3. How can we humans help them reach their destinations more smoothly
animal;
its living habits;
its habitat;
the problem it faces;
how the problem happens;
solution
Tips for expressing ideas
Reduce the use of
pesticides and chemicals
Plant more trees
Do a wildlife survey
Create wildlife habitats
Write a short summary based on The Monarch’s Journey. Try to use as many new words and key expressions as you can. Your summary should not be less than 100 words.
