资源简介

(共19张PPT)
unit 5 Into the wild
Understanding ideas
Pre-reading
It talks about monarch butterflies' amazing migration to Mexico.
Watch and think:
While-reading：
Skim and check the answers
1. What is the main idea of the passage
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 sentence, or even the pictures.
While-reading：
listen and match the main ideas of each paragraph(大册子P60）.
While-reading：
Careful reading
Read para 1 and finish the mind map.
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.
Definition:
Animals‘annual movement from one place to another at certain times
Aims:
find food, seek a partner, or in search of warmer weather.
Example:
North American monarch butterfly
To where
Careful reading
Read para 2 and fill in the blanks.
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 to California or Mexico. However, until recently no one knew how they did this.
Monarch butterflies’
migration
When
How many
How long
millions
Every autumn
4,000 kilometres
Californiaor
Mexico
While-reading：
a. The monarch butterfly is able to tell 1_______________.
b. Using these two pieces of information, the monarch butterfly determines 2______________.
c. The monarch butterfly measures 3__________________________with its eyes.
d. The monarch butterfly reaches 4 ______________________________________.
Read para 3 and fill in the flow charts.
A team of scientists led by Professor Eli 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 the sun is in the sky – allow the butterfly to determine the way to go. Eventually, it manages to reach the places where it will spend the winter.
the way to go
the places where it will spend the winter
the position of the sun
the time of day
Careful reading
While-reading：
a. The monarch butterfly is able to tell 1_______________.
b. Using these two pieces of information, the monarch butterfly determines 2______________.
c. The monarch butterfly measures 3__________________________with its eyes.
d. The monarch butterfly reaches 4 ______________________________________.
the way to go
the places where it will spend the winter
the position of the sun
the time of day
cause
effect
Read para 3 and fill in the flow charts.
Careful reading
While-reading：
Read para 4 and fill in the blanks.
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.
e. Humans 5 ______________ trees.
f. The 6 _________________________________ where monarchs can be found is destroyed.
g. Humans use chemicals that 7 ______________ that monarch caterpillars eat.
h. The monarch butterfly’s population 8 _________________________ in the last few years.
cut down
natural environment of many places
kill the plants
has crashed (by as much as 90%)
Careful reading
While-reading：
Read para 4 and fill in the flow charts.
e. Humans 5 ______________ trees.
f. The 6 _________________________________ where monarchs can be found is destroyed.
g. Humans use chemicals that 7 ______________ that monarch caterpillars eat.
h. The monarch butterfly’s population 8 _________________________ in the last few years.
cut down
natural environment of many places
kill the plants
has crashed (by as much as 90%)
cause
effect
Careful reading
While-reading：
Read para 5 and answer the questions.
The research on the monarch’s behavior 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.
1.What measures are taken to protect monarch butterflies
2. Why do people make the research
make sure that there are enough plants for it to feed on
Record its migration
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.
Careful reading
While-reading：
Post-reading：
Discuss
How to protect animals
Do
Don’t
1、protect the environment and their habitats
2、choose green means of transport.
3、care about them and live in harmony with them
1、use poisonous chemicals
2、kill/hunt/hurt animals.
3、keep them for pets or money.
Summary:
在某些时候
寻找，搜寻
想法设法做成某事
找到去……的路
……的解决方法
处于困境中
……的数量
砍伐
导致
以……为食
at certain times
in search of
manage to do sth
find one’s way to
the solution to...
in trouble
the number of...
cut down
lead to
feed on
Summary ：
Language points
These two pieces of information — the time of day and the point where the sun is in the sky — allow the butterfly to determine the way to go.
where the sun is
in the sky
句中的where the sun is in the sky为关系副词where引导的定语从句，修饰先行词 the point，where在定语从句中用作地点状语。
the point
1. Eventually, it manages to reach the places where it will spend the winter.
Exercise: 将下列含有“where”的句子译为汉语。
2. After the war, a new school was put up where there had once been a theatre.
3. In many places where the butterfly can be found, people destroy environment.
最后，它成功到达了它要过冬的地方。
战后，一所新学校在曾经是剧院的地方建立起来。
在很多可以找到黑脉金斑蝶的地方，人们正在破坏自然环境。
Summary ：
2. The solution to the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble.
where the sun is
in the sky
句中的when it is in serious trouble为关系副词when引导的定语从句，修饰先行词 a time，when在定语从句中用作时间状语。
when it is in serious trouble
If this works, there may come a time when the number of monarch butterflies increases once again.
Exercise: 将下列含有“where”的句子译为汉语。
The campus was still quiet when I arrived, so I decided to explore a bit.
如果这个做法起作用，黑脉金斑蝶的数量有望再次回升。
当我到学校时，校园里还是静悄悄的，我决定先去探寻一番。
Language points
Summary ：
3. Sadly, human activity is the main reason why the number of monarch butterflies is falling.
句中的why the number of monarch butterflies is falling为关系副词why引导的定语从句，修饰先行词 reason，why可以换成for which，在定语从句中用作原因状语。
why the number of monarch butterflies
Tom came late for the meeting. That was ________ he was ill.
Exercise: 将下列句子补充完整。汤姆开会迟到的原因是因为他生病了。
is falling.
The reason ________ Tom came late for the meeting was ________ he was ill.
because
why
that
Language points
Homework:
Write a short passage to introduce one endangered species based on The Monarch’s Journey.
If humans and animals swap identities…

展开更多......

收起↑