Using LanguageⅠ教学设计及教案分析

Unit4 Using Language

Flowers and their animal pollinators Learning Objectives: 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. 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

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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.

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) 2. Flowers that are white or pale can be seen by night pollinators.

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3. Butterflies are attracted to sweet-smelling flowers.

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) 4. Bats pollinate flowers at night.

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) 5. Flower color is not important to hummingbirds.

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) 6. All pollinators need to land on the flower if they are to find the nectar.

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) 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.

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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. _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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