上外版（2020）选择性必修第三册 Unit 4 Protecting the Environment Grammar in use 学案（学生版+教师版）

《高中英语》（上外版）选择性必修三第四单元 Protecting the Environment Grammar in Use (1 课时) 学案（学生版） I. Identify forms of emphatic structures Interactive Task 1: Answer some questions according to the last paragraph in Reading A. Q1: What’s the worst change for our atmosphere Q2: What demonstrates the villainy of carbon dioxide Q3: Why does the author use the sentence pattern “It is … that …” Interactive Task 2: Underline the sentences with emphatic structures in the dialogue. A: Is carbon dioxide harmful B: No. It makes up a very small percentage of the gases in the world. In fact, carbon dioxide is essential for life. It is carbon dioxide that plants need to produce “food” . A: In that case, the more the better B: Well, it’s not often the case. It is due to the increase in the concentration of carbon dioxide in the atmosphere that the planet’s average temperature is going up. It is the greenhouse effect that we call it. A: So, is the earth getting hotter B: Yes. The increased temperature does change our world for the worse. The polar ice caps are melting, and our sea level is rising. A: How can we stop global warming B: All nations across the world need to work together. It is all of us who should take the challenge. 强调句基本结构: 强调不同成分 例句 II. Practice the use of emphatic structures Interactive Task 3: Rewrite each of the following statements with the emphatic structure by emphasising the underlined part. 1. Plants absorb carbon dioxide and convert it into their own tissue. 2. In the process plants release oxygen, which is necessary for human and animal life. 3. Carbon dioxide in a large quantity damages the environment. 4. The earth maintains a balance by gaining heat and losing it in turn. 5. The concentration of carbon dioxide will be about 0.066 percent. Interactive Task 4: Answer the following questions with emphatic structures by referring to Reading A. 1. What do plants release after they absorb carbon dioxide 2. What effects of carbon dioxide on our life make people consider it the villain in the atmosphere 3. What does we call the process when carbon dioxide blocks the earth from radiating heat into space 4. Since when, has the concentration of carbon dioxide moved upwards each year 5. I heard some glaciers melted because of global warming, did they 6. We take action to prevent the greenhouse effect from getting worse, do we _____ III. Use emphatic structures in the context Interactive Task 6: Have a discussion about the concept of “heaven-and-human oneness” with the example of carbon dioxide. Use emphatic structures whenever possible. You may begin with … A: We often hear the globe is heating up. Then, what leads to global warming B: …《高中英语》（上外版）选择性必修三第四单元 Protecting the Environment Grammar in Use (1 课时) 学案（教师版） I. Identify forms of emphatic structures Interactive Task 1: Answer some questions according to the last paragraph in Reading A. Q1: What’s the worst change for ou ... ...