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(共12张PPT)
Unit 3 Trees and us
主题范畴：
人与自然
主题群：
自然生态；环境保护
子主题：
热爱与敬畏自然，与自然和谐共生
Key question
Why do we need trees
1. communicate /k mju:n ke t/
2. species / spi: i:z/
3. communicate with
*4. sth. happen to ...
*5. join together
v. 交流；沟通
n. 种；物种
与……沟通
某事发生在
交织在一起
New words and phrases
P40
（打*为课外拓展或已学词汇）
branch
flower
fruit
leaf
root
trunk
Pre-listening
Review the different parts of a tree.
fruit
branch
trunk
root
flower
leaf
How much do you know about trees Discuss the questions below.
(1) How do trees communicate with one another
(2) Do trees have families and relatives like us
(3) What makes trees grow better and stronger
Amazing trees
P40
Famous trees in China
Trees and people
Trees help each other
Do you know any other facts about trees
Listen to the podcast The Natural World and tick( ) the main topic of it

While-listening
P40
Listen again. Decide whether the following statements are true(T) or false(F).
P40
roots
the same
Together they grow better and stronger.
当树的枝叶连接在一起是有害的。
harmful 为形容词，意为“有害的”，其名词和动词形式均为harm，反义词为harmless。
be harmful to = do harm = be bad for 意为“对……有害”。
吸烟对健康有害。
它们对儿童有害。
Smoking is harmful to health.
They are harmful to children.
It is harmful when the branches and leaves of trees join together.
Good evening. Thanks for joining me in this week's The Natural World. I'm Rebecca. For the next four weeks, we'll talk about trees around us. And today's topic is about how trees help each other. Being a tree can be difficult, but trees have found ways to make it easier for one another. In fact, trees are not alone. They have very long roots, and they use them to communicate with their neighbours. When something bad happens to a tree, it may be able to send a message through its roots. Then the other trees will try to help it. Did you know that, like us, trees also have families
Listening Script
与……交流
某事发生在……
make sth. adj. 使得某物怎么样
Post-listening
Older trees give younger trees food and water. Younger trees also help older trees survive. When one tree becomes ill, the healthy trees around it will try to help. Most trees only share things with trees from the same species. However, some trees always help their neighbours, even if they aren't their relatives. Trees know they are stronger together. When their branches and leaves join together, they don't need to worry about strong winds. Together they grow better and stronger. Aren't trees amazing That's all for today. Next week I'll talk about famous trees in China. What are they Think of your favourite and join me next Tuesday to find out more. See you then!
生存
种类
亲戚
担心；担忧
What other amazing facts do you know about trees Share your facts with your classmates.
Thank you!

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