相关简介
本课件为人教版高中英语必修二《Wildlife Protection》SectionD PPT教学课件，共27页，围绕野生动物保护主题，系统讲解“cut down”“stir”等重点词汇以及“when it comes to...”等核心句式。通过例句与用法解析，帮助学生掌握相关语言点，提升环保议题下的英语表达能力。
互动探究
重点词汇
1. cut down 砍伐；削减，缩小（尺寸、数量或数目）
Billions of trees are being cut down every year to make paper for humans. 每年都有数十亿棵树被砍伐，为人类制造纸张。
Deserts are also created because people cut down trees and dig up grass. 人们砍伐树木和铲除草地也会导致沙漠的形成。
On no account should we cut down the output of the factory. 我们绝不可以把工厂的产量降低。
The man suddenly cut in when we were speaking. 那个人在我们讨论时突然插话。
Because of the terrible flood, they have cut off the electricity of the city. 由于可怕的洪水，他们切断了城市里的供电。
After the old man cut the tree down, he cut it up. 老人砍倒树后，把它砍成小块。
2. stir vt. 激发，搅动
What does each poster use to stir up emotions? 每一张海报用什么来激起情绪？
Then a memory stirs in you and you start feeling anxious. 接着一段回忆涌上心头，你开始感到焦虑不安。
Palm trees stir in the soft Pacific breeze. 棕榈树在太平洋和煦的微风中轻轻地摇动。
重点句式
When it comes to wildlife protection, all species — the good, the bad, and the ugly — should be treated equally. 谈到野生动物保护，所有的物种——好的、坏的、丑的——都应该得到平等的对待。
【句式剖析】
when it comes to... 是固定句型，意为“谈到；涉及”。
When it comes to the campus security, we have to take it seriously. 当谈到校园安全时，我们必须认真对待。
When it comes to education, the majority of people believe that education is a lifetime study. 谈到教育，大多数人认为教育是终身学习。
【温馨提示】
when it comes to... 中的 to 是介词，后接动词时要用动词 -ing 形式，不能用动词原形，it 不可更改。
Jane is not good at sports, but when it comes to cooking, she 's excellent. 简对运动不擅长，但是说到厨艺，她很拿手。
