Unit 5 Into the wild Understanding ideas 课件(共42张PPT)-2025-2026学年高中英语外研版（2019）必修第一册
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| 名称 | Unit 5 Into the wild Understanding ideas 课件(共42张PPT)-2025-2026学年高中英语外研版（2019）必修第一册 |
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| 格式 | pptx | ||
| 文件大小 | 2.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-11-11 16:37:36 | ||
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(共42张PPT)
Unit 5
Into the wild
外研版高中英语必修一
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 pictures and choose the animals that migrate.
monarch butterfly
Siberian crane
Atlantic
salmon
red panda
killer whale
African lion
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.
Enjoy a video about Monarch migration.
The Monarch’s Journey
1 AI place to another at certain any animals move from one 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.
2 Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey. Somehow they manage to travel around 4,000 kilometres south and find their way the sun is in the sky- allow the to California or Mexico. Howeve,until recently no one knew how they did this.
3 A team of scientists led by ProfessorEli Shlizerman at the University of Washington has now found the answer. They have found out that the monarch is able to tell the time of day. It uses its eyes to measure the position of the sun. These two pieces of information - the time of day and the point where, butterfly to determine the way to go. Eventually, it manages to reach the places where it will spend the winter.
4 The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble. Its population has crashed by as much as 90 per cent in the last few years. Sadly, 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. They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.
5 The research on the monarch's behaviour has however led to a greater awareness of this creature. People have been working together to record its migration and make sure that there are enough plants for it to feed on. If this works, there may come a time when the number of monarch butterflies increases once again. The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.
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.
Choose where you are most likely to find the passage.
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.
Why do you choose that answer
Look at the mind map of the passage.
From the arrangement of the passage, which parts do you think are more important in the passage Why
paragraph 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.
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 _________ the environment.
The ________ were killed and there is no food for the monarch caterpillars.
It has the ability to tell the _________.
It can find out the ________ of the sun.
The population of the monarch has __________ by 90%.
time
destroying
position
plants
reach
decreased
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
e'df
Choose the right item from the box and make the summary complete.
human activity, orange wings, in danger, increase, position, awareness
Every autumn millions of North American monarch butterflies use their beautiful black and 1. ___________ to fly 4,000 km south to sunny California and Mexico for the winter.
orange wings
1. What impresses you most about the monarch butterfly
2. What can people do to help protect the monarch butterfly
Tips: Students can discuss the questions with their group members. Then one student answers the questions, but allow others to add up.
1. One of the most wonderful migrations in nature is that of the North American monarch butterfly.
one of + 名词复数，谓语动词用单数，表示“……中之一”；
that用来指代前面提到的内容，所指代的名词可以是可数名词，也可以是不可数名词。这一用法可以让句子更加简洁，避免重复与累赘。
2. Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey.
millions of, hundreds of, thousands of, billions of 等属于概数词，of后面接可数名词复数，短语前面不可以加具体的数词。
eg Millions of people went back to their
hometown at Spring Festival.
【拓展】
hundred / thousand / million / billion用法：
具体的
数词
+
hundred / thousand /
million / billion (单数形式)
hundreds / thousands /
millions / billions (复数形式)
+
of+ n.
Two hundred people are enough for the work.
Billions of stars twinkled in the sky.
3. Somehow they manage to travel around 4,000 kilometres south and find their way to California or Mexico.
manage to do sth: to succeed in doing sth, especially sth. difficult 设法干成某事
eg We managed to get to the airport in time.
How did you manage to persuade him
辨析
try to do sth.: to make an effort to do sth. 尽力去做某事（成功与否不确定）
4. It uses its eyes to measure the position of
the sun.
position n. the situation that sb is in or the place where sb or sth is 位置；职位；状态
eg There must be a lot of people in my position (处于我这种情况).
measure v. 1) to find the size, length, or amount of sth量，测量;
2) to judge the importance, value, or true nature of sth 估量，判定
eg The pond measures about two metres across.
It is difficult to measure the success of the campaign at this stage.
5. The solution to the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble.
the solution to sth. ……的解决方法
常见的用介词to的短语有：
the key to sth. ……的钥匙/关键所在
the answer to sth. ……的答案
the way to sth. ……的方法/道路
the entrance to sth. ……的入口
in (serious) trouble : in an unpleasant, difficult or dangerous situation
eg He is in serious trouble and needs my
help.
“in+抽象名词” 短语有：
in danger, in debt (处于负债中), in despair (处于绝望中), in doubt, in need, in peace,
in power, in silence, in shock等
6. It’s population has crashed by as much as 90 per cent in the last few years.
population 人口，人口数量，作主语时谓语动词单复数根据意思来定。提问人口数量多少时只能用what，不能用how many。
eg The population is increasing at about
6% per year. (population当做整体)
One third of the world’s population
consume (s) two thirds of the resources.
What’s the population of China
crash v. suddenly lose a lot 暴跌
eg Share prices crashed to an all-time low (前所未有的低记录) yesterday.
【拓展】
crash v. to hit extremely hard 碰撞，撞击；
to lose very badly in a sport溃败，惨败
eg A track went out of control and crashed into the back of a bus.
I crashed completely in the first round.
crash n. 碰撞；碰撞声；暴跌；失败；奔溃
7. Sadly, human activity is the main reason why the number of monarch butterflies is falling.
the number of ……的数量中心词是number, 在句中作主语时谓语动词单复数和number一致。
【拓展】
a number of +n. [pl]，许多，大量
可用large或small来修饰。作主语时，谓语动词用复数。
8. They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.
本句中包含两个由关系代词that引导的定语从句。第一个定语从句中，先行词是chemicals，关系代词that在定语从句中作主语，可用which替换；在第二个定语从句中，先行词是plants，that在定语从句中作宾语，可省略。
9. The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.
the +比较级 ……, the +比较级
越…….越……(前者是条件，后者是结果)
eg The more I know him, the more I like
him.
The harder you work, the luckier you
will be.
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.
Thank you
Unit 5
Into the wild
外研版高中英语必修一
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 pictures and choose the animals that migrate.
monarch butterfly
Siberian crane
Atlantic
salmon
red panda
killer whale
African lion
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.
Enjoy a video about Monarch migration.
The Monarch’s Journey
1 AI place to another at certain any animals move from one 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.
2 Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey. Somehow they manage to travel around 4,000 kilometres south and find their way the sun is in the sky- allow the to California or Mexico. Howeve,until recently no one knew how they did this.
3 A team of scientists led by ProfessorEli Shlizerman at the University of Washington has now found the answer. They have found out that the monarch is able to tell the time of day. It uses its eyes to measure the position of the sun. These two pieces of information - the time of day and the point where, butterfly to determine the way to go. Eventually, it manages to reach the places where it will spend the winter.
4 The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble. Its population has crashed by as much as 90 per cent in the last few years. Sadly, 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. They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.
5 The research on the monarch's behaviour has however led to a greater awareness of this creature. People have been working together to record its migration and make sure that there are enough plants for it to feed on. If this works, there may come a time when the number of monarch butterflies increases once again. The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.
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.
Choose where you are most likely to find the passage.
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.
Why do you choose that answer
Look at the mind map of the passage.
From the arrangement of the passage, which parts do you think are more important in the passage Why
paragraph 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.
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 _________ the environment.
The ________ were killed and there is no food for the monarch caterpillars.
It has the ability to tell the _________.
It can find out the ________ of the sun.
The population of the monarch has __________ by 90%.
time
destroying
position
plants
reach
decreased
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
e'df
Choose the right item from the box and make the summary complete.
human activity, orange wings, in danger, increase, position, awareness
Every autumn millions of North American monarch butterflies use their beautiful black and 1. ___________ to fly 4,000 km south to sunny California and Mexico for the winter.
orange wings
1. What impresses you most about the monarch butterfly
2. What can people do to help protect the monarch butterfly
Tips: Students can discuss the questions with their group members. Then one student answers the questions, but allow others to add up.
1. One of the most wonderful migrations in nature is that of the North American monarch butterfly.
one of + 名词复数，谓语动词用单数，表示“……中之一”；
that用来指代前面提到的内容，所指代的名词可以是可数名词，也可以是不可数名词。这一用法可以让句子更加简洁，避免重复与累赘。
2. Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey.
millions of, hundreds of, thousands of, billions of 等属于概数词，of后面接可数名词复数，短语前面不可以加具体的数词。
eg Millions of people went back to their
hometown at Spring Festival.
【拓展】
hundred / thousand / million / billion用法：
具体的
数词
+
hundred / thousand /
million / billion (单数形式)
hundreds / thousands /
millions / billions (复数形式)
+
of+ n.
Two hundred people are enough for the work.
Billions of stars twinkled in the sky.
3. Somehow they manage to travel around 4,000 kilometres south and find their way to California or Mexico.
manage to do sth: to succeed in doing sth, especially sth. difficult 设法干成某事
eg We managed to get to the airport in time.
How did you manage to persuade him
辨析
try to do sth.: to make an effort to do sth. 尽力去做某事（成功与否不确定）
4. It uses its eyes to measure the position of
the sun.
position n. the situation that sb is in or the place where sb or sth is 位置；职位；状态
eg There must be a lot of people in my position (处于我这种情况).
measure v. 1) to find the size, length, or amount of sth量，测量;
2) to judge the importance, value, or true nature of sth 估量，判定
eg The pond measures about two metres across.
It is difficult to measure the success of the campaign at this stage.
5. The solution to the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble.
the solution to sth. ……的解决方法
常见的用介词to的短语有：
the key to sth. ……的钥匙/关键所在
the answer to sth. ……的答案
the way to sth. ……的方法/道路
the entrance to sth. ……的入口
in (serious) trouble : in an unpleasant, difficult or dangerous situation
eg He is in serious trouble and needs my
help.
“in+抽象名词” 短语有：
in danger, in debt (处于负债中), in despair (处于绝望中), in doubt, in need, in peace,
in power, in silence, in shock等
6. It’s population has crashed by as much as 90 per cent in the last few years.
population 人口，人口数量，作主语时谓语动词单复数根据意思来定。提问人口数量多少时只能用what，不能用how many。
eg The population is increasing at about
6% per year. (population当做整体)
One third of the world’s population
consume (s) two thirds of the resources.
What’s the population of China
crash v. suddenly lose a lot 暴跌
eg Share prices crashed to an all-time low (前所未有的低记录) yesterday.
【拓展】
crash v. to hit extremely hard 碰撞，撞击；
to lose very badly in a sport溃败，惨败
eg A track went out of control and crashed into the back of a bus.
I crashed completely in the first round.
crash n. 碰撞；碰撞声；暴跌；失败；奔溃
7. Sadly, human activity is the main reason why the number of monarch butterflies is falling.
the number of ……的数量中心词是number, 在句中作主语时谓语动词单复数和number一致。
【拓展】
a number of +n. [pl]，许多，大量
可用large或small来修饰。作主语时，谓语动词用复数。
8. They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.
本句中包含两个由关系代词that引导的定语从句。第一个定语从句中，先行词是chemicals，关系代词that在定语从句中作主语，可用which替换；在第二个定语从句中，先行词是plants，that在定语从句中作宾语，可省略。
9. The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.
the +比较级 ……, the +比较级
越…….越……(前者是条件，后者是结果)
eg The more I know him, the more I like
him.
The harder you work, the luckier you
will be.
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.
Thank you