(共18张PPT)
What does the video mainly talk about
It talks about monarch butterflies' amazing migration to Mexico.
Watch and think:
1. Students are able to get the main idea and details of the passage;
2. Students can grasp some useful reading skills;
3. Students can figure out the importance of protecting animals and raise the awareness of harmony between man and nature.
Learning aims
Read the passage and finish Ex. I and Ex. II (了解感知和深入学习) on your learning paper.
Please disscuss your confusions with your group members.
What is the main idea of the passage
A. The monarch's migration.
B. The reasons for monarch's migration.
C. Mexico's monarch.
Task
1
Go through the passage quickly and answer the questions.
Tips
The main idea of a passage can be found from its title, the topic sentence, or even the pictures.
Tips
Title
The topic sentence
Pictures
Read the passage and find out what mystery the scientists have solved.
Task
2
The scientists have solved the mystery of how monarch butterflies manage to travel a long distance and find their way to their destination.
2
P50
1. In a scientific research paper about the monarch butterfly's migration.
2. In a popular nature magazine introducing the monarch butterfly.
3. In a travel leaflet encouraging people to visit North America.
Choose where you are most likely to find the passage.
Task
3
3
P52
1. Why do many animals migrate (Para. 1)
2. How does the monarch determine the way to go (Para. 3)
3. What has happened to the monarch in the past few years and how did it happen (Para. 4)
4. What's the significance of the research on the monarch (Para. 5)
Read paragraph by paragraph to answer the following questions.
Task
4
1. They migrate to find food, seek a partner, or in search of warmer weather.
2. The monarch is able to tell the time of the day and the point where the sun is in the sky.
3. Because of human activities the number of the monarch has crashed by as much as 90 percent in the past few years.
4. The research on the monarch’s behavior has led to a greater awareness of it and people have been working together to record its migration and make sure there are enough plants for it to feed on.
Check your answers!
Complete the sentences with expressions from the passage. Then use sentences to complete the “cause-effect” flow chart.
Task
5
4
P52
d
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 _______________ ___________________.
the time of day
the way to go
the position
it will spend the winter
a / c
c / a
b
of the sun
the places where
Check your answers!
h
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
(by as much as 90 per cent)
e / g
g / e
f
has crashed
analyzing,
mindmap,
summary,
retelling
The monarch's journey
The definition of migration
The background to the monarch's migration
The mystery of the monarch's migration
The trouble of the monarch
Its solution
Learn to understand the passage.
1
Influences of human activities on the monarch
The
Monarch’s Journey
Where
Time
How
Every __________
Travel around 4000 km south
to __________or _________
Use _____ to measure_______ ______________and _____ ______________________
Main causes: ____________
such as _______________
and _____________
cutting down trees
using chemicals
Solution:
Make sure that there are _____________for it to feed on
enough plants
autumn
California
Mexico
time of the day
eyes
where the sun is in the sky
human activity
Trouble:_______________________________________________
its population has crashed by as much as 90%
the point
the
Every autumn, North American monarch butterflies migrate a long way to California or Mexico. The journey is difficult. Recently, a team of scientists discovered that the butterfly could use the time of day and the position of the sun to find the right way to go. Research also finds out that the number of butterflies is falling greatly due to human activities. Studies let people know more about monarch butterflies and call on us to do more to protect them so as to increase their number and keep their place in nature. (92 words)
A possible version中小学教育资源及组卷应用平台
Unit 5 Period 2 Developing ideas
【学习目标】
1. Students are able to get the main idea and details of the passage;
2. Students can grasp some useful reading skills;
3. Students can figure out the importance of protecting animals and raise the awareness of harmony between man and nature.
【难点重点】
To get useful information from the text.
To improve the reading ability.
【导学流程】
了解感知
Watch the video and think:
What does the video mainly talk about
深入学习
Task 1
Go through the passage quickly and answer the questions.
What is the main idea of the passage
A. The monarch's migration.
B. The reasons for monarch's migration.
C. Mexico's monarch.
Task 2-3
Do Activity 24 on P51-52.
Task 4
Read paragraph by paragraph to answer the following questions.
Why do many animals migrate (Para. 1)
How does the monarch determine the way to go (Para. 3)
What has happened to the monarch in the past few years and how did it happen (Para.
4. What's the significance of the research on the monarch (Para. 5)
迁移运用
Put the sentences into Chinese.
1 They migrate to find food, seek a partner,or in search of warmer weather
2 One of the most wonderful migrations in nature is that of the North American monarch butterfly.
3 It uses its eyes to measure the position of the sun.
4 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.
5 The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble.
6 In many of the places where the butterfly can be found, people are destroying the natural environment.
7 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.
Ⅰ.课文语法填空
Every autumn,millions of the North American monarch butterflies manage 1. (travel) around 4,000 kilometres south and find their way to places 2. they will spend the winter.
A team of scientists 3. (lead) by Professor Eli Schlizerman at the University of Washington has found that the monarch is able to tell the time of the day and 4. (use) its eyes to measure the position of the sun.
The solution to the mystery of the monarch’s 5.____________ (amaze) ability comes at a time when its population 6.____________(crash) by as much as 90 per cent in the last few years. 7.__________ (sad), human activity is the main reason why the number of monarch butterflies is falling.
8. research on the monarch’s behaviour has however led 9. a greater awareness of this creature.The more we know about these lovely creatures, the 10. (great) the chance they will survive.
II.语法填空
Every year in the month of March，one of 1. world's greatest wildlife migrations (迁徙)stops in central Nebraska. For a short time，sandhill cranes(沙丘鹤)fill the state's wide，flat fields. The land provides the birds 2. the perfect place to rest and eat.
Since several years ago，more and more people 3. (discover) the migration. Visitors crowd into river blinds—special buildings that help keep the bird watchers 4. (hide) themselves. They look through their cameras or telescopes in wonder.
The sandhill cranes are worth the trip. They are 5. (general) a little over a meter tall.They have long legs and necks. Their wings stretch over two meters. Sandhill cranes have soft，grey feathers. They 6. (know ) for having a bright red area on the top of their heads.
The birds stop in Nebraska as they make their way from their winter homes in Mexico and some 7. (south) parts of the United States. The birds usually spend two to three 8. (week) at this place 9. they leave.They arrive in waves at times as many as 400,000 in one day. They eat in the nearby fields and grass lands.Leftover grain，insects and small creatures give 10. (they) the energy they need as they continue their trip north，toward Canada and Siberia.
III.语法填空(共10小题；每小题1.5分，满分15分)
My wife and I like watching plays，so we will go to the theater whenever we have time.But before we buy tickets，we would like to know if the play is good or bad. When a new play comes，we 1. (usual) read the newspaper to get information about it. Last week a new play was put on at the theater.The newspaper said it was very 2. (interest) so we decided to go on Saturday night. My wife took a long time to make her 3. (decide) about what to wear and we left our house a little late. 4. the time we got to the theater，the first act had already 5. (begin)．After the play was over，we met some friends，6. lived next to us several years ago. Then we went dancing. By the time we got home，it was about two o'clock in the morning. I'm not used to 7. (stay) out so late and I was 8. (extreme) tired.
When I was younger，I did not have the money to go out for 9.
evening like this.Though I can afford it now，I don't have the energy 10.
(enjoy) it.
Ⅳ.语法填空
It has been widely accepted that dinosaurs died out because of 1.
unexpected incident.But wildlife today 2. (disappear) or is in danger just because humans do harm to it. For example，tigers are hunted for fur to make carpets；grassland 3 . (destroy) without mercy(怜悯) so that a lot of animals can only live in secure reserves.
Last year，scientists saw some monkeys making use of a certain kind of insects to protect themselves 4. fierce mosquitoes. After a careful study，scientists found that the insects contain a 5. (power) drug. Then local farmers were employed 6. (catch) the insects to make medicine. The result was 7.
the insects disappeared from the whole area. When the farmers were told that it was a loss to humans they burst into laughter and responded，“ The real loss is 8.
(we) decreasing income.”
We should appreciate the natural balance and pay more attention to the 9.
(important) of wildlife protection. Not until we succeed in 10. (let) wildlife live in peace，can we smile in relief.
答案
Ⅰ.课文语法填空
to travel 2. where 3. led 4. uses 5. amazing 6. has crashed 7. Sadly
8. The 9.to 10. greater
II.语法填空
【语篇解读】 本文为说明文。文章介绍了沙丘鹤长途迁徙途经美国中西部小憩的情况，非常壮观，值得游客观赏。
1．the 考查冠词。句意：每年3月，世界上最大的野生动物之一沙丘鹤迁徙，都会在内布拉斯加州中部停留。world前要用the。
2．with 考查介词。句意：这片土地为鸟类提供了休息和进食的完美场所。provide...with...给……提供……。
3．have discovered 考查动词时态及主谓一致。句意：自从几年前，越来越多的人发现沙丘鹤迁徙。根据前面的时间状语“Since several years ago”可知此处要用现在完成时，且主语是people，故填 have discovered。
4．hiding 考查非谓语动词。分析句子可知，本空格是非谓语动词，在句中作动词crowd的伴随状语。bird watchers和hide之间存在主动关系，故用现在分词hiding。
5．generally 考查词性转换。句意：沙丘鹤一般都有一米多高。根据语境可知，本空格在句中作状语，修饰系动词are，要用副词修饰动词。
6．are known 考查动词时态和语态。句意：他们以头顶上一块鲜红色的区域而出名。 be known for...因……而出名。此处表示一般情况，且主语为复数，故填are known。
7．southern 考查词性转换。句意：这些沙丘鹤从墨西哥和美国南部的一些地方的冬季家园出发，在内布拉斯加州停留。此处应用形容词作定语修饰名词。
8．weeks 考查名词单复数。句意：这些鸟通常在离开前在这个地方呆两到三周。句中的week为可数名词，且此处有two to three修饰，故用复数形式。
9．before 考查连词。句意：这些鸟通常在离开前在这个地方呆两到三周。分析句子结构可知，此处为时间状语从句，缺少从属连词，根据句意可知，此处是指“在……之前”，故填before。
10．them 考查代词。本空在句中作动词的宾语，要用代词宾格。
III.语法填空
【语篇解读】 本文是一篇记叙文，主要叙述了作者和妻子去看戏，偶遇一些过去的老朋友，于是和朋友们玩了很多，一直到凌晨两点，花费了很多的钱和精力。
1．usually 考查副词。句中使用副词修饰谓语动词read，故填usually。
2．interesting 考查形容词。句意：报纸说这部新的戏剧很有趣。句中应该使用形容词修饰代词it，故填interesting。
3．decision 考查名词。句意：妻子用了很长时间来决定穿什么衣服所以我们出发有点晚了。形容词性物主代词her的后面要接名词作动词make的宾语，故填动词decide的名词形式decision。
4．By 考查介词。句意：当我们到达剧院的时候，第一场已经开始了。介词by意为“到……时为止”，引导时间状语从句时，主句通常使用完成时。所以本句要填介词By。
5．begun 考查时态。句意：我们到达剧院时，第一场已经开始了。介词by意为“到……时为止”，引导时间状语从句时，主句通常使用完成时，句中要用过去分词组成过去完成时。故填过去分词begun。
6．who 考查定语从句。本句被修饰的先行词是friends，而且在定语从句中作lived的主语，故填who。
7.staying 考查固定搭配。句意：我不习惯熬夜这么晚，所以我非常累。固定搭配be used to sth./doing sth.意为“习惯于某事/做某事”， to是介词，故填staying。
8．extremely 考查副词。句中使用副词修饰形容词tired，故填副词extremely“极其，非常”。
9．an 考查不定冠词。句意：当我年轻的时候，我没有钱去度过这样的一个夜晚。evening开头的发音为元音，故填不定冠词an。
10．to enjoy 考查目的状语。句意：尽管现在我能够承担得起，但我没有精力去享受了。to do 不定式作定语修饰energy，故填to enjoy。
Ⅳ.语法填空
【语篇解读】 本文是一篇说明文。文章论述了保护环境的重要性。今天的野生动物消失或处于危险之中，仅仅是因为人类对它们造成了伤害。我们应该珍惜自然的平衡，更加重视野生动物保护的重要性。
1．an [考查冠词。句意：人们普遍认为恐龙的灭绝是由于一次意外事件。incident为可数名词，此处表示泛指“一次事件”，且unexpected为元音音素开头的单词，故填不定冠词an。]
2．disappears/has disappeared [考查动词的时态。句意：但今天的野生动物消失或处于危险之中，仅仅是因为人类对它们造成了伤害。根据下文or is in danger可知应用一般现在时，故填disappears。或用现在完成时，表示“已经消失”填has disappeared。]
3．is destroyed [考查动词时态语态。句意：例如，老虎被猎杀是为了获得皮毛来制作地毯；草地被无情地破坏，因此许多动物只能生活在安全的保护区。本句中主语grassland与谓语动词构成被动，且为一般现在时，故填is destroyed。]
4．from [考查介词。句意：去年，科学家们看到一些猴子利用某种昆虫来保护自己免受凶猛蚊子的叮咬。短语protect sth.from...“使某物免受……”，故填from。]
5．powerful [考查形容词。句意：经过仔细研究，科学家们发现这种昆虫含有一种强力药物。drug为名词需要形容词修饰，故填powerful。]
6．to catch [考查非谓语动词。句意：然后，当地农民被雇佣来捕捉昆虫来制作药物。此处作目的状语，故填动词不定式to catch。]
7．that [考查连接词。句意：结果是昆虫从整个地区消失了。本句为表语从句，从句中不缺少成分，故填that。]
8．our [考查代词。句意：当农民们被告知这是人类的损失时，他们大笑起来，回答说：“真正的损失是我们收入的减少。”income为名词需要形容词修饰，故填形容词性物主代词our。]
9．importance [考查名词。句意：我们应该珍惜自然的平衡，更加重视野生动物保护的重要性。根据上文the可知应填名词，故填importance。]
10．letting [考查非谓语动词。句意：直到我们成功地让野生动物生活在和平中，我们才能松一口气地微笑。in为介词后跟动名词做宾语，故填letting。]
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