Lesson 8 Why Are Plants Important?
第8课 为什么植物很重要？
Danny, Jenny and Brian are walking in a forest.
丹尼、珍妮和布莱恩在森林里散步。
I love this forest.
我喜欢这片森林。
There are so many trees and plants.
这儿有这么多的树和植物。
The air is always clean and fresh.
空气一直很干净很清新。
Yes.Trees and other plants help clean the air.
是的。树木和其他的植物帮助净化空气。
That's true.It's pleasant to walk in the forest.
是的。在森林里走路很愉快。
When the weather is sunny and hot,you can sit in the shade under a tree.
当天气晴朗而炎热的时候，你可以在树荫下面坐着。
It's nice and cool.
很好，很凉爽。
I'm hungry!Maybe I can eat a plant!
我饿了！也许我能吃点植物的果实！
Sure.Danny!
当然！丹尼！
Look,there is an apple tree over there!
看，那儿有一棵苹果树。
Is there a donut tree?
那是多纳圈树吗？
Donuts don't grow on trees!
多纳圈不长在树上！
Trees and other plants are important to people.
树木和其他植物对人类很重要。
They help us fulfill our basic needs.
他们帮助我们满足我们的基本需求。
That's for sure.
是的。
People use trees and other plants in many ways.
人们在很多地方使用树木和其他植物。
The trees and plants take energy from the sun and turn it into food.
树木和植物从太阳那里获取能量，然后将它转化进食物里。
Medicine and clothing are also made from trees and plants.
药物和衣物也来自树木和植物。
The forest is important to animals,too.
森林对动物也很重要。
Many animals live in the forest and eat the fruit from the trees.
许多动物住在森林里，吃来自树上的果实。
They eat other plants, too.
他们也吃其他的植物。
And plants cover the soil.
植物还能保持水土。
That way, the wind and water don't carry the soil away.
那样的话，刮风下雨就不会把土带走了。
Plants also make everything look beautiful.
植物还能让一切看起来很美丽。
In a word. We can't live without plants!
一句话。我们的生活离不开植物！
