Unit4 Using Language
Flowers and their animal pollinators
Learning Objectives:
At the end of this class, students will be able to
know something about flowers and their animal pollinators by skimming and answering the questions.
know something about nature and love nature.
前置测评：
Words:
1.________________vt.＆vi.发展；进展；进化→________________n.演变；进化
2.________________vt.缚上；系上；附加 3.________________adj.芬芳的；香的
4.________________adj.典型的，有代表性的→________________adv.
5.________________adj.精巧的；脆弱的；微妙的
6.________________n.气味；香味；臭味→________________adj.没有气味的；无嗅的
7.________________adj.不鲜明的；阴暗的 8.________________adj.发霉的；有霉味的
9.________________adj.果味的；（酒）有葡萄味的
10.________________vt.对……授粉→________________n.虫媒
Phrases:
11._____________________贴上；附上 12._____________________发出(气味、热等);分发
课内探究：
Part I Skimming
1. Before you read the text on Page 38, have a quick glance at it . What is the text about ?
________________________________________________________________________________
2. Find the main idea of each part:
Three paragraphs: _________________________________________________________________
Pictures: ________________________________________________________________________
Chart:___________________________________________________________________________
Part II Scanning
Paras1-3: Answer the questions
Q1: What is the advantage for animals of visiting flowers?
________________________________________________________________________________
Q2: Why do some plants need animals ?
________________________________________________________________________________
Q3.How does an animal pollinate a flower?
________________________________________________________________________________
Q4. What kinds of animals are most flowers pollinated by?
________________________________________________________________________________
Q5.What features of a flower are important in attracting animal pollinators?
________________________________________________________________________________
Q6.The word “evolve” means _______ .
A. develop B. rely on C influence D. affect
Chart : True or False
1. Bees follow colored lines to the nectar inside the flower. ( )
2. Flowers that are white or pale can be seen by night pollinators. ( )
3. Butterflies are attracted to sweet-smelling flowers. ( )
4. Bats pollinate flowers at night. ( )
5. Flower color is not important to hummingbirds. ( )
6. All pollinators need to land on the flower if they are to find the nectar. ( )
Part III. Long and difficult sentences:
1). So pollination takes place, therefore increasing the chances of the survival of the plant species.
therefore/thus doing sth 现在分词作结果状语
His parents died, leaving him an orphan. 他父母死了，他成了孤儿。
________________________________________________________________________________
2). Pollen becomes attached to the animal during its visit to a flower and is then passed on to another plant’s blossom on its next visit.
attach to 把……附加、系上或缚在……上
He attached a label to each piece of luggage. 他把每件行李都贴上标签。
________________________________________________________________________________
3). Through evolution, most flowers have adapted to attract specific types of pollinators.
adapt to 使适应，改编
The spokesman adapts his speech to suit the interests of his audience. 这个发言人把讲演修改了一下，以适应听众的趣味。
He has adapted to the climate there. 他已经习惯于那里的气候了。
________________________________________________________________________________
Part IV Post-reading
Find other nouns in the chart that mean the same as “smell”. List adjectives from the chart that are used to describe different kinds of smells.
Nouns that mean “smell”: _________________________.
Adjectives that describe smells: ______________________________________________________.
Part V Discussion:
In groups, look at the pictures and decide what kinds of pollinators these plants might have. Give reasons for your answers.
Part VI Homework
Write a short passage about flowers and their animal pollinators according to what we have learned in this class.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
评测练习
Ⅰ.短语填空?
attach?to；adapt?to；over?time；conflict?with；pass?on；take?place；give?out；depend?on?
1.Their?account?of?events________?________ours.?
2．After?several?months?of?struggling，she________?________________the?new?way
?of?life?abroad.?
3．We?are?quite?sure?that?many?pollinators________?________one?plant?species?to
?provide?all?the?food?for?their?young.?
4．As?we?all?know，the?Olympic?Games________?________every?four?years，with
?participating?athletes?from?all?over?the?world.?
5．In?the?process，pollen________?________?________the moths?that?carry?it?to
?another?flower.?
6．The?sun________?________light?and?heat，referred?to?as?the?source?of?life.
?7．Why?has?English?changed?so?greatly________?________？
?8．The?family?story________?________from?generation?to?generation.?
II. 完成句子?
1.__________?___________(长期以来)，many?flowering?plants?and?their animal?pollinators?have?evolved?together.?
2．________?________(通过进化)，most?flowers________?________?__________(变得适宜于)?attracting?specific?types?of?pollinators.?
3．Scientists?think?that?birds?probably______?______(进化)?reptiles.
?4．This?hospital_______?_______?_______(附属于)?our?medical?department.?
5．He?is?a?man________?________?________?________(可依靠的).
课件31张PPT。Flowers and their animal pollinators 1.________vt.＆vi.发展；进展；进化→________n.演变；进化
2.________vt.缚上；系上；附加
3.________adj.芬芳的；香的
4._________adj.典型的，有代表的→_______adv.
5.________adj.精巧的；脆弱的；微妙的
6.________n.气味；香味；臭味→________adj.没有气味的；无嗅的
7.________adj.不鲜明的；阴暗的
8.________adj.发霉的；有霉味的
9.________adj.果味的；（酒）有葡萄味的
10._______vt.对……授粉→______n.虫媒Words and phrasesAnswers:
evolve, evolution 2. attach
3. fragrant 4. typical, typically
5. delicate 6. odour, odourless
7. dull 8. musty 9. fruity
10. pollinate, pollinatorWords and Phrases11.________________贴上；附上
12.________________发出(气味、热等);分发Words and phrasesAnswers:
11. attach to 12. give outchrysanthemum pollinatepollinator petalDo you know any animal pollinators?beeflywasp (黄蜂)hummingbirdbutterfly moth Flowers and their animal pollinators At the end of this class, students will be able to
1. know something about flowers and their animal pollinators by skimming and answering the questions.
2. know something about nature and love nature.Learning Objectives1.Before you read the text on Page 38, have a quick glance at it . What is the text about ?
______________________________________________________SkimmingThe text is about flowers and their
animal pollinators.Company LogoSkimming: structure of the textthree
paragraphspictureschartPara.1-3:Q2: Why do some plants need animals ?
Q1: What is the advantage for animals of visiting flowers?
Animals get food called nectar from the flowers.ScanningSome plants need animals to pollinate
them.Q3.How does an animal pollinate a flower?
An animal pollinates a flower by
collecting pollen（花粉） from a flower and passing it on to another flower.Q4. What kinds of animals are most flowers pollinated by?
Most flowers are pollinated by bees,
moths and butterflies.Q5.what features of a flower are important in attracting animal pollinators?
The features of a flower that are important in attracting animal pollinators are its color, shape, size and smell.
Q6.The word “evolve” means _______ .
develop B. rely on
C. influence D. affect1. Bees follow colored lines to the nectar inside the flower.
2. Flowers that are white or pale can be seen by night pollinators.
3. Butterflies are attracted to sweet-smelling flowers. TFChart :True or FalseT4. Bats pollinate flowers at night.
5. Flower color is not important to
hummingbirds.
6. All pollinators need to land on the flower
if they are to find the nectar. TFF 1. So pollination takes place, therefore increasing the chances of the survival of
the plant species. Part III. Long and difficult sentences:therefore/thus doing sth现在分词作结果状语这样通过授粉就增加了植物物种生存的机会。 His parents died, leaving him an orphan. 他父母死了，他成了孤儿。
2. Pollen becomes attached to the animal during its visit to a flower and is then passed on to another plant’s blossom on its next visit.attach to 把……附加、系上或缚在……上动物接触一朵花后，花粉就附着在它的身上，动物接触下一种植物的花时就把这些花粉传到花朵上。He attached a label to each piece of luggage. 他把每件行李都贴上标签。3. Through evolution, most flowers have adapted to attract specific types of pollinators.通过进化，大部分花朵变得适于吸引特殊种类
的花粉传播者。adapt to 使适应，改编The spokesman adapts his speech to suit the interests of his audience. 这个发言人把讲演修改了一下，以适应听众的趣味。
He has adapted to the climate there. 他已经习惯于那里的气候了。Find other nouns in the chart that mean the same
as “smell”. List adjectives from the chart that are
used to describe different kinds of smells.
Nouns that mean “smell”: _____________.
Adjectives that describe smells:
____________________________________
_____________________.odour, perfumedelicate, fragrant, odourless, strong, sweet, musty, fruityPost-readingcactus flowers
(仙人掌花) [k?kt?s] bats, mothsIn groups, look at the pictures and decide what kinds of pollinators these plants might have. Give reasons for your answers. Discussionfuchsias ['fju???]
(倒挂金钟属植物)
hummingbirdsperuvian lilies
(秘鲁百合)
?[p?'ru:vi?n] beestrumpet flower
(喇叭花) ?[tr?mpit] hummingbirdsbutterflies chrysanthemum
(菊花)butterflies hibiscus
(木槿) [hai'bisk?s] butterflies hummingbirdswild ginger flowerflies [d?ind??]细辛花johnny jump ups(三色堇)Bees
Write a short passage about flowers and their animal pollinators according to what we have learned in this class.
HomeworkThank You! 课后反思
本节课利用一些漂亮的图片导入新课，提出植物及其动物传媒这个话题，使学生注意力能够立刻被吸引过来。然后通过一些练习，让学生能够对课文有深层次的了解，最后通过讨论要求学生回答图片上的花是属于哪一种动物传媒。准备了好些图片，从学生的反应看，他们对这些图片是很感兴趣的，做出的回答也很准确。课堂还算流畅，气氛也比较活跃。基本达成了本节课的目标。
同时本节课也有一些地方有待改进，比如有些练习的难度偏大，没有很好地引导学生通过原文来找相关的答案，还有在长难句讲解时，仅仅采用了口头提问的方式，如果能让两个学生在黑板上板书，再根据学生写出的句子进行讲解，适当的引导，效果会更好。
