Unit4 Exploring planets Warming up and Reading 课件(21张PPT)

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名称 Unit4 Exploring planets Warming up and Reading 课件(21张PPT)
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科目 英语
更新时间 2019-10-26 20:23:04

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(共21张PPT)
Unit 4 Exploring Plants

Plant Exploration in the 18th and 19th Centuries
Warming & Reading
How much do you know about plants?
1. some plants do not have flowers?
2. some plants have roots that live in the air?
3. some plants eat meat?
4. some plants need animals to pollinate them?
5. some plants grow on other plants?
6. plants are adapted to live in specific environments?
7. people buy plants that come from other countries for their gardens?
8. a new plant does not always grow from a seed?
Do you know that:
1. some plants do not have flowers?
2. some plants have roots that live in the air?
pine trees mushrooms
mangrove trees
3. some plants eat meat?
4. some plants need animals to pollinate them?
Venus flytrap
5. some plants grow on other plants?
6. plants are adapted to live in specific environments?
tropical plants
orchids on the trees
parasitic plants (寄生植物)
dodder(菟丝子)
7. people buy plants that come from other countries for their gardens?
8. a new plant does not always grow from a seed?
tulip

Turkey
carnation

southern Europe
Do you have a courtyard garden or some pot plants on your balcony?
Do you know where these plants come from? Are they Chinese plants or do they come from another country?
How do you think plants have travelled from one country to another?
Scan the title of the reading passage and the pictures and predict what it is about?
Plant Exploration
in the 18th and 19th Centuries
What's the genre of this passage?
A. expository writing
B. narrative writing
C. argumentative writing
D. practical writing
When plant collecting began
When and where plant collecting began on a large scale.
French Catholic missionaries collected plants in China in the 18th century.
Sir Joseph Banks from Britain collected many plants in Australia.
Keeping plants alive on long trips was a problem of collecting.
The invention of Wardian case helped transport plants on long journeys.
Robert Fortune made several trips to China for collceting.
French Catholic missionaries collected plants in China in the 19th century.
Many European plant collectors introduced a lot of new plants to weatern countries
Beijing
Tree of Heaven
Seeds of the tree of Heaven were sent to _______, and were grown ______________. In 1784, it was introduced in ___________.
Result
England
throughout Europe
North America
collected
Europeans
Wardian case
120 species of plants
tea plants
India
Dove Tree
France
Western gardens
Draw a mind map according to one clue(time or character), then retell the passage according to your mind map.
If you are a botanist from Britain and you are asked by the king to collect seeds of trees from China, what will you prepare? Why?

Do you think plant exploration is meaningful? Why?
water hyacinth(水葫芦)
Look up new words in a dictionary

Read the passage aloud at least 3 times.