unit 4 exploring plants 全单元教案

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名称 unit 4 exploring plants 全单元教案
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资源类型 教案
版本资源 人教版(新课程标准)
科目 英语
更新时间 2010-08-20 23:08:00

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Unit 4 Exploring plants
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 gardens
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 question.(Page 38)
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” which picture shows which plant
Now listen to Mark,Gordon and Andrea telling their class about these plants. Which students talk about which plants
Listen again and complete the table with the correct information.

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Period two
Aim:
To make students understand the text.
Plant exploring in the 18th And 19th 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 18th and 19th 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 other reasons
6) What important the survival rates of plants transported long distances


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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
A as well as B
A and B as well
18 distant adj. far away in space or time 远的,遥远的
19 distance n. in the distance
from the distance
at a distance
keep sb. a distance
20 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 botanical world began on a large scale.
2. Not only did Fortune introduce over 120 species of plants to western gardens but he also shipped 20000 tea plants from…

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