Warming up、Pre-reading、Reading、Comprehending评课稿

Unit 4 Exploring plants Reading Period one

Aim: To train the students’ ability of listening and speaking. Contents:

Step I Warming up

Q1 What do you know about plants?

Q2 Do you know what kind of plant don’t have flowers?

Q3 Do you know what kind of plant have roots that live in the air?

Q4 Do you know what kind of plant need animals to pollinate them?

Q5 Do you know what kind of plant grow on other plants?

Q6 Do you know that people buy plants that come from other countries for their gard Q7 Do you know that a new plant does not always grow from a seed?

Step II Listen and discuss:

First give some photos of the plants and then ask students answer the following quest Q1 How would you describe each plant?

Q2 What do you think is unusual about each plant?

Q3 One of the pictures shows pitcher plants and another shows “Living stones” whshows which plant? Now listen to Mark

Gordon and Andrea telling their class about these plants. Which about which plants? Listen again and complete the table with the correct information. Period two Aim: To make students understand the text. Plant exploring in the 18 th And 19 th centuries.

Contents:

Q1 What is each paragraph about?

Q2 Write down the topic of each paragraph in your own words.

Q3 What happened in these years? Complete the sentences on page 33.

Q4 Answer there question in groups.

1) Why was there a lot of plant collecting in the 18 th

and 19 th centuries 2) How did French missionaries come to be plant collection? 3) What were some of the negative aspects of plant collecting expeditions?

4) Transporting plants over long distances was a big problem, why was this?

5) Why did many plants fail to reach their destinations alive? Can you think of any ot6) What important the survival rates of plants transported long distances?

Period three

Aim: To make students master the language points in this text.

Contents:

Phrases: 1. date back to: go back to/date from eg: This town dates back to the Rome time

2.

on a large scale

3.

take / find/ have/ show/ find interest in.

4.

take the opportunity of doing sth

5.

go on botanical expeditions

6.

come into conflicts with be in conflicts with

7.

accompany sb: keep sb company

8.

on purpose / by design / by intention with the purpose of

9.

come across run into / across meet with

10.

keep sth alive

11.

make a trip to s.p.

12.

dress as

13.

in…style

14.

result in lead to bring about

15.

be excited with

16.

have a vast variety of

17.

not only…but also not alone…but also not merely/ simply… but also

18.

A as well as B A and B as well

19.

distant adj. far away in space or time

20.

distance n. in the distance from the distance at a distance keep sb. a distance

21.

scale n. 1) balance for weighing

磅秤

2) relative size, extent, scope

规模�程度

on a large / small scale

大/小规模

on the scale of … to…

按…的比例

to a scale

按一定比例

to a scale of … to…

按…的比例

21 appeal to 1

�恳求�恳请

I am appealing on behalf of the refugees.

我代表那些难民提出恳求

He appeal to us for help.

他恳求我们的帮助

2

�诉诸�诉之于

Appeal to the law / a higher court 3

�事物引起�人的�兴趣�有吸引力�投入所为

Does the film appeal to you? n. make an appeal to

吸引, 诉之于

Sentence structures 1. It was not until the eighteenth and nineteenth centuries that the exploration of the world began on a large scale. 2. Not only did Fortune introduce over 120 species of plants to western gardens bushipped 20000 tea plants from… Period Four Aim: To make students understand the text Flowers and their animal pollinators Contents: I. Questions: 1) What is the text about? 2) What do the pictures show you? 3) What is the chart about?

4) What is the advantage for animal of visiting flowers? 5) Who do some plants need animals? 6) How does an animal pollinate a flower? 7) What is nectar? 8) What kinds of animals are most flowers pollinated by? II. Language points 1. over time

随着时间的推移

over the weekend

整个周末over these years

在这些年里

2. reward sb with sth

用…回报某人

3. attach… to 依附于…上

4. pass on to 把…往下传

5. adapt to 使…适应

The spokesman adapts his speech to suit the interests of his audience. He has adapted to the climate here. 6. describe … as 把…

描述成

7. guide sb to s.p.把…领到… 8. land on 登陆

9. provide sb. with sth 向…提provide sth for sb. provide for

养活�规定

III. Difficult sentences 1) Pollen becomes attached to the animals during its visit to a flower and is then another plant’s blossom on its next visit.

动物接触一朵花后,花粉就附着在它身上,动一种植物的花时就把这些花粉传到花朵上

. 2) Through evolution, most flowers have become adapted to attract specific types o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