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UNIT 8 I love nature!
Lesson 1 Why are plants important
★学习目标：
掌握本课重点词汇和句型，能在实际情境中灵活运用。
通过本节课学习，学生能与同学积极合作，了解植物的重要性，热爱自然。
Warming up
What can plants do for us
Reading
A Do you think plants are important
B What can plants do to help nature Give some
examples.
Yes. They are important for us and animals.
Plants can clean the air and produce oxygen for us.
Talk with your partner about plants.
Li Ming: I love the forest. There are so many trees and plants here. The air is fresh.
Wang Mei: Trees and other plants are important for us.
Listen to the conversation and tick the main idea.
Li Ming: Yes, you are right. Plants clean the air. They give us food like fruits and vegetables. Some medicine and clothing are also made from plants.
Wang Mei: The forest is important for animals, too. Many animals live in the forest and eat leaves and fruits from the trees.
Li Ming: Plants also play a part in the water cycle. And they
Listen to the conversation and tick the main idea.
cover the soil. That way, the wind and water don’t carry the soil away. Plants make the world look beautiful.
Wang Mei: Indeed, we can’t live without plants!
Listen to the conversation and tick the main idea.
It’s a pleasure to walk in the forest.
We can’t live without plants.
Trees and animals are part of our life.
Listen to the conversation again and tick what is mentioned.
People can eat plants or use them as medicine.
Plants help keep the air clean.
Many animals live in the forest.
Books, paper, pencils, and erasers all come from plants.
Listen to the conversation again and tick what is mentioned.
Animals eat leaves and fruits from the trees.
Plants cover the soil and keep dust away.
Plants make everything look beautiful.
People use wood from trees to build houses and furniture.
Language points
be made from：由…… 制成
拓展：be made of / be made from / be made in / be made by
be made of 由......制成 看得出原材料（物理变化） 例：The chair is made of wood.
这把椅子是木头做的。
（能看出木头）
be made from 由......制成 看不出原材料（化学变化） 例：Paper is made from plants.
纸是植物做的。
（看不出植物）
Some medicine and clothing are also made from plants.
有些药物和衣物也是由植物制成的。
be made in 在某地制造 表产地/生产地 例：This shirt is made in China.
这件衬衫是中国制造的。
be made by 被......制造 表制作者/生产者 例：This cake is made by my mom.
这个蛋糕是我妈妈做的。
Some medicine and clothing are also made from plants.
有些药物和衣物也是由植物制成的。
Plants also play a part in the water cycle.
植物也在水循环中发挥作用。
water cycle：水循环
play a part in的多重含义：
在…… 中起作用（对某事有影响、有贡献）
例：Plants play a part in cleaning the air.（植物在净化空气方面起作用。）
在…… 中扮演角色（担任某个角色）= play a role in
例：She plays a part in the new play.（她在新话剧里扮演一个角色。）
参与/参加……（加入并参与某事）= take part in
例：Everyone should play a part in protecting nature.（每个人都应该参与保护自然。）
That way：名词短语，意为 “这样一来；通过这种方式”，置于句首表承接。
carry： v. 携带；拿；运送
carry…away：把…… 冲走 / 带走
拓展：carry, take, bring与get
That way, the wind and water don’t carry the soil away.
这样，风和水就不会把土壤冲走。
carry 搬、扛、运送;带走 只强调“负重移动”，不说明去哪（无方向） 例：Plants carry water.
植物运输水分。
take 拿走、带走 把人/物从说话人处带走（从近→远） 例：Please take your book away.
请把你的书拿走。
That way, the wind and water don’t carry the soil away.
这样，风和水就不会把土壤冲走。
bring 带来；拿来 把人/物带到说话人处 （从远→近） 例：Bring me some water, please.
请给我拿点水。
get 去取；去拿 去某地拿了再回来 （来回） 例：Can you get some water for me
你能帮我拿点水吗？
Work in groups. Talk about why we need plants and complete the mind map. You can use some of the ideas in Activity 3.
Functions of plants
They clean the air.
They give food to humans. Some medicine and clothing are also made from them.
They are important for animals. Animals eat leaves and fruits from them.
They play a part in the water cycle. They help keep the soil and make the world beautiful.
The forest is important for animals, too.
I love the forest.
Do you think plants are important
Can people eat plants
Do you like the green one or the red one
Why are plants important
Listen and repeat.
语调
说话或朗读时声音的抑扬称为语调。英语句子的语调通常分为升调和降调两种,升调或降调都从句子中最后一个重读音节开始。一般遵循以下规则:
1.一般疑问句用升调。
Do you often walk in the forest (你经常在森林里散步吗？)
Are you interested in plants (你对植物感兴趣吗？)
2.省略句表示疑问用升调。
See this little tree 看到这棵小树了吗？
Got your notebook ready (把你的笔记本准备好了吗？)
3. 特殊疑问句、陈述句、感叹句通常用降调:
What do plants need to grow (植物生长需要什么？)
How beautiful the forest is! (这片森林多美啊！)
4. 祈使句表示命令用降调，表示请求用升调:
Don’t pick the flowers! (不要摘花！)
Pass me the seed, please (请把种子递给我，好吗？)
5. 选择疑问句中, or前面的用升调, 后面的用降调:
Is this plant a flower or a grass (这株植物是花还是草？)
Do you prefer the tall tree or the short bush (你更喜欢高的树还是矮的灌木？)
6. 列举事物时, and前面的用升调,后面的用降调:
We need soil , water , sunlight , and air to grow plants.
(我们需要土壤、水、阳光和空气来种植植物。)
Exercise
根据汉语意思完成句子
1.大风把我的帽子吹走了。
The strong wind _________________ my hat.
2.这瓶葡萄酒是用葡萄制成的。
This bottle of wine __________________ grapes.
3.词典在英语学习中扮演了一个重要的角色。
The dictionary ________________________ learning English.
is made from
plays an important part in
carried away
根据括号所给内容填空
1. It gives me great ____________ (please) to grow flowers.
2. It makes me ___________ (feel) excited to watch National Women's Volleyball Team's matches.
3. Seeing so many ____________ (leaf) on the ground, he felt a little sad.
4. We should eat more fruit and _____________ (vegetable).
feel
leaves
pleasure
vegetables
Homework
★Homework
Communicate with your classmates in English about the importance of plants.
Review the key sentence patterns and vocabulary learned in this lesson.

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