5. Then workers in the Leaf will mix water, CO₂ and sunlight. 然后叶片里的“工作者”会把水、二氧化碳和阳光混合在一起。
点拨 “mix A，B and C”意为“把A、B和C混合在一起”，mix为及物动词，后直接接多个并列名词作宾语，表示混合多种物质。
We can mix milk and tea to make milk tea. 我们可以把牛奶和茶混合做奶茶。
▶迁移
Don't oil and water together.

5. mix

6. It’s useful for the growth of the plant. 它对植物的生长非常有用。
点拨 “be useful for (doing) sth”意为“对……有用；有益于……”。
Reading is useful for our study. 阅读对我们的学习有益。
▷迁移
This book is very for English learners.

6. useful

7. They need it to breathe! 它们需要它来呼吸！
点拨 “need sth to do sth”意为“需要某物来做某事”，其中，to do作目的状语，说明需要某物的目的。
We need water to live. 我们需要水来生存。
▷迁移
(1) We need air (live) on the earth.
(2) Plants need sunlight (grow) well.

7. (1) to live (2) to grow

8. Without plants, the natural world would be very different! 如果没有植物，自然界将会截然不同！
点拨 “without＋名词”意为“没有，若无”，放在句首可作条件状语，意为“如果没有……”。
Without water, we can't live. 没有水，我们无法生存。
迁移
your help, I can't finish the work.

8. Without

校园自然科普杂志正在征稿,请你根据内容提示写一篇60词左右的英语短文,描述一个真实的或想象中的植物探索发现。
内容提示:
(1)发现是什么?
(2)谁做出了这个发现?
(3)它的惊人之处是什么?
(4)我们能从中学到什么?
参考句型:
For hundreds of years, people believed that...
...made an amazing discovery.
By..., ...found/realized/saw that...
It proves that...
Research shows that...
It teaches us that...

参考范文:For hundreds of years, people believed that grass only grew in spring. But last month, I made an amazing discovery.
By looking at the grass in our school yard every day, I found that some grass can still grow in cool autumn. The most amazing thing is that it stays green even when the weather is a little cold.
It proves that plants are very strong. It teaches us that if we observe carefully, we can find many wonderful secrets hidden in nature.