歌名：Song of Photosynthesis

作者：未知

歌词背景大意：

本单元是北师大版英语教材第九单元Save the planet中第二十五课Lesson 25 Going Green. 这个课件使用哔哩哔哩网站上的一个有关植物光合作用的科普视频。主题是植物光合作用的必要元素与过程，从科学的角度有说服力地提倡了环保意识。音乐节奏轻快，歌词简单，符合初中生的认知水平，加上初三学生已学习过生物光合作用，此视频能让他们温故知新并且激起他们对生物和英语的兴趣。

教学建议：

此课件也可用于人教版九年级第十三单元We’re trying to save the earth; 沪教版七年级下册第四单元Save the trees 九年级下册第三单元The environment 冀教版八年级下册第二单元Why are plants important。可以在课前播放此课件让学生活跃起来，将学生带入课本情景，和学生讨论有关光合作用以及保护环境的话题

歌词：

Did you know, without oxygen,

you wouldn’t survive in this world we live in

Did you know, that all of the trees produce our oxygen. 

It’s expelled from their leaves.

Photosynthesis is the project this song is about. 

A chemical reaction in plants we can’t live without.

Many people don’t see trees and plants for what they really do

and so they don’t respect the life balance trees provide for you.

Plants have Chlorophyll. 

It’s the green pigment you see. 

It allows sunlight to be absorbed to provide energy.

This Chlorophyll lives in a thing called Chloropias

This is where Photosynthesis occurs. 

It happens really fast.

Did you know, without oxygen, 

you wouldn’t survive in this world we live in

Did you know, that all of the trees

 produce our oxygen. It’s expelled from their leaves

When plants suck up water through roots and send it to their leaves.

This water used for Photosynthesis which is one part of three

Carbon Dioxide’s second part which plants to breathe through the stomata which is found on the outside of their leaf

Then the photos from sunlight are absorbed into Chloroplast

This is where the chemical reaction will happen at last

hese things called Thylakoids are the first step of two

They take water and sunlight creating this energy crew

NADPH and ATP are the energy and the waste is Oxygen

that’s released for you all to breathe.

These energies are then palled onto the Stroma

and they’re mixed with carbon dioxide to make glucose sugar

This sugar glycose is made for the plant to eat. 

It is their source of food and helps grow food for you and me

Did you know, without oxygen, you wouldn’t survive in this world we live in

Did you know, that all of the trees produce our oxygen. 

It’s expelled from their leaves

So the next time you take a deep breath of oxygen

remember the plants created the world you’re able to live in

And when you exhale all the carbon dioxide

you’re helping to fuel a plant to live and also to survive

Go save the earth and go plant some trees

so we can clean up the air and make oxygen to breathe

Did you know, without oxygen

you wouldn’t survive in this world we live in

Did you know, that all of the trees produce our oxygen

It’s expelled from their leaves

科普-光合作用之歌.pptx