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Tick √ , if you agree. 1. We want more houses because there are more people. 2. The Earth is getting hotter and hotter. 3. People cut down trees to make more roads. 4. There are more and more roads because there are more and more cars. 5. Farmers need the land to grow food. People need to eat food. 6. Trees will help to make the Earth a better place. √ √ √ √ √ √ 1. People cut down trees! 人们砍倒树！ cut是 “砍；切” 的意思，与 down连用，意为 “砍倒”。 例句：他们把这棵大树砍倒了。 They cut down the big tree. 拓展：cut down还有“削减；缩短”的意思。 Language points 2. Why do people cut down trees? 为什么人们砍倒树？ 英语中，why和because是一对好朋友，两者往往一起出现，用在提问原因和回答的对话中。 例句：你为什么迟到了?因为我错过了公汽。 —Why are you late? —Because I missed the bus. 3. Let’s plant more trees to make the Earth clean and green. 让我们来种更多的树，让地球变得干净，变绿吧。 这是一个以Let’s开头的祈使句，let型祈使句的结构为: “Let’s+动词原形+其他”