课 题 Unit 6 Earth first Starting out 课 型 新授课 课 时 第一课时 学 习 目 标 1. To master basic knowledge of this lesson and use them freely. 2. To develop students’ reading comprehension’s abilities by discussion and cooperation. 3. To guide students to guide students to pay attention to the environmental problems. and take action to protect the earth. 重 点 难 点 1. Master some key words extinction, alarming, phrases refer to on and expressions. 2. Let students think about the things we can do to protect our living environment. 学 法 指 导 1.课前30分钟自主学习，完成预习学案。 找出自己的疑惑和需要讨论的问题，用红笔做好标记。 2.课上25分钟高效讨论展示答案 3.课上10-15分钟答疑解惑。 4.课后20分钟巩固学习 课堂探究 Starting out Step 1 Watch the video and answer the questions. (1) Do you know what day April 22nd is (2) What is it for Step 2 1 Watch the video and answer the questions. 1.Which of the facts in the video do you find most alarming 2. What does the video want to tell us Fill in the blanks with the help of the video. Save Life on Earth Earth, home1 countless plants and animals for millions of years, has an uncertain future. How many of us are aware that 130,000 square kilometres of forest disappear every year. Around 25,000 trees 2 (cut) down each day just to make toilet paper. Each day, around 150 to 200 species of plants and animals become extinct -- 3 (near) 1,000 times the natural rate of extinction. Over 1 million animals are killed by ocean 4 (pollute) each year. 1 billion people don’t have clean 5 (drink) water. A plastic bottle can take 450 years to break down. The ice caps are more than 50% 6 (thin) than they were 40 years ago. If we don’t change our ways, we are7 risk of ruining our planet and destroying many more plants and animals. Some day in the future, there may be no tigers, no horses, no butterflies, no dolphins and no whales; nor there be any trees8 flowers. All of these things will be gone. And we will be gone, too. Time 9 (run) out. Our planet needs our help. It’s up to us to decide together 10 happens next. 2 Look at the pictures and answer the questions. 1. What environmental problem does each cartoon refer to 2. What are the causes of these problems 3. What do you think is the most serious environmental problem we face today What should be done to help solve it We may have different answers of these questions. All in all, let’s watch a video and seek your answers from it. Step 3 Language points 1. alarming adj. 让人担忧的；令人恐慌的； alarm v. 使担忧；使恐惧；使警觉 n. 警报；警报器；恐慌；闹铃 -- alarmed adj. 担忧的；惊恐的 --alarmingly adv. 令人惊恐地；让人担忧地 ①raise the alarm 发出警报；引起警觉 ②set the alarm 设定警报器；设置闹钟 ③be alarmed at/by 为......担忧/惊恐 Exercise 1. They should not be too alarmed the press reports. 2. The world forests are shrinking at an (alarm) rate. 3. We could not see what (alarm) him. 4. The alarm didn’t go this morning. 2. extinct adj. 灭绝的；绝种的 extinction n. 灭绝； ... ...
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