资源简介

(共21张PPT)
Before you read
fruit
branch
trunk
root
flower
leaf（leaves）
1 Label the different parts of a tree with the words below
trunk branch fower fruit leaf root
Before you read—Discussion
Think
What do trees do for us
Trees do a lot for us.
Let’s learn more about it!
Our silent friends
From the deepest forests to our towns and cities, trees are all around us. We share our world with trees. They are our silent friends, but we often overlook them.
In fact, trees are very important for all living things on Earth. To begin with, forests are a safe place for animals, insects and plants to live. Trees are also good for us humans because they take in greenhouse gases like CO2 and produce oxygen. This means they help create a clean environment for everyone on this planet.
Trees make our lives more convenient. Many of the things around us, such as paper and pencils, come from trees. Just look around your room—a lot of the furniture is made of wood. Trees also provide us with delicious fruit and wonderful drinks. For example, we can make tea from the leaves of the tea tree.
Trees do so much for us. We can’t imagine a world without them. However, humans are not treating trees in a kind way. We are cutting down forests all around the world. We are polluting the water and the air, and this harms trees. All these things are a big problem. We need to do more to protect trees and save our planet.
Language notes
1. silent /9saIlRnt/ adj. 不说话的；沉默的 She was silent for a moment with her eyes closed.
2. overlook /0RWvR9lWk/ v. 忽略；未注意到 We could not overlook such a serious mistake.
3. human /'hju:mRn/ n. 人 Humans should do more to protect trees.
4. oxygen /9BksIdZRn/ n. 氧；氧气 Both people and animals need oxygen to live.
5. create /kri'eIt/ v. 创造 They try to create a green world by planting more trees.
6. environment /In9vaIrRnmRnt/ n. 自然环境 We all need to protect the environment.
7. convenient /kRn9vi:niRnt/ adj. 便利的；方便的 It is very convenient to travel around China.
8. furniture /9fF:nItSR(r)/ n.（可移动的）家具 They plan to buy some new furniture.
Language notes
9. wood /wWd/ n. 木；木头 He used a piece of wood to make a toy car for the boy.
10. treat /tri:t/ v. 以……态度对待；以……方式对待 Her parents still treat her like a child.
11. to begin with 首先；第一点 To begin with, we should stop cutting down so many trees.
12. come from 来自 All the furniture in this room comes from trees.
13. look around 环视；环顾；四下察看 Jack happily looked around his new bedroom.
14. be made of 由……制成 This table is made of pine tree wood.
15. for example 例如；譬如 We get a lot of things from trees. For example, rubber is from rubber trees.
Before you read
—Prediction
It’s mainly about the importance of trees.
What is the article mainly about
(Pay attention to the introduction, title, pictures and the first sentence of each paragraph.)
While-reading—Reading for details
animals, insects and plants
greenhouse gases like CO2
oxygen
more convenient
paper and pencils
is made of wood
delicious fruit and wonderful drinks
In fact,trees are very important for all living
things on Earth.To begin with,forests are a safe
place for animals,insects and plants to live.Trees
are also good for us humans because they take in
green house gases like CO and produce oxygen.
This means they help create a clean environment
for everyone on this planet
While-reading—Reading for structure
Use linking words (连接词) to make ideas more logical(有逻辑的).
In fact,trees are very important for all living
things on Earth.To begin with,forests are a safe
place for animals,insects and plants to live.Trees
are also good for us humans because they take in
green house gases like CO and produce oxygen.
This means they help create a clean environment
for everyone on this planet
While-reading—Reading for structure
Do you know other linking words
Trees make our lives more convenient.Many of
the things around us, such as paper and pencils.
come from trees.Just look around your room
a lot of the furniture is made of wood.Trees also
provide us with delicious fruit and wonderful
drinks.For example,we can make tea from the leaves of the teatree
While-reading—Reading for structure
Give examples to make your argument more persuasive（有说服力的）.
Trees make our lives more convenient.Many of
the things around us, such as paper and pencils.
come from trees.Just look around your room
a lot of the furniture is made of wood.Trees also
provide us with delicious fruit and wonderful
drinks.For example,we can make tea from the leaves of the teatree
While-reading—Reading for structure
Look around our classroom. What else comes from trees Give more examples.
While-reading—Telling facts from opinions
Reading strategy
Telling facts from opinions
Facts are true pieces of information about the world.Opinions are people's personal feelings and beliefs.
They(Trees) takeing reen house gases like CO and produce oxygen.(Fact)
They（Trees)are our silent friends,but we often over look them.（Opinion）
Can you find more examples in the article
Many of the things around us, such as paper and pencils, come from trees.
For example, we can make tea from the leaves of the tea tree.
We are cutting down forests all around the world.
We are polluting the water and the air, and this harms trees.
In fact, trees are very important for all living things on Earth.
Forests are a safe place for animals, insects and plants to live.
Trees make our lives more convenient.
We can’t imagine a world without them.
However, humans are not treating trees in a kind way.
We need to do more to protect trees and save our planet.
After you read—Discussion
Discuss the questions below in your group.
(1) How do you understand the sentence “We can’t imagine a world without them (line 17)”
(2) What else do trees do for us
(3) What is the purpose of the article What does the author want to tell us
(4) Why is the article titled “Our silent friends” What does the title mean
Trees are very important!
Trees are our silent friends!
Let’s protect trees together!
After you read—What would a tree say
Imagine you are a tree. What would you like to tell human beings
Work in pairs and design a poster.
(1) You can begin with “Hello, I am a tree.”
(2) Explain why trees are important and how humans are harming trees. Then ask humans to protect trees. Use at least eight sentences.
(3) Add an attractive title and some drawings to your poster.
(4) Vote on the best posters. They will be put up on trees in our school.
Self-assessment
评价内容 评分（1-5）
1. 我能理解树木的重要性及境况。 1 2 3 4 5
2. 我能分析句子间的逻辑关系。 1 2 3 4 5
3. 我能区分事实和观点。 1 2 3 4 5
4. 我能推断作者的观点和意图。 1 2 3 4 5
5. 我能利用课堂所学，表达自己对于保护树木的观点，替树木发声。 1 2 3 4 5
Homework
基础作业
1. 模仿课本录音的语音、语调，朗读课文。
2. 完成课本第39页Vocabulary practice。
3. 继续完成课堂上的活动，完善保护树木的海报。
拓展作业
搜索信息，查阅树木对人类和地球的重要性相关的资料。
THANK YOU

展开更多......

收起↑