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4. 通过讨论，能够让学生知道对于环保，自己在不同地方应该和不应该做的事情
Key Points and Difficulties【重点难点】
重点：1. 识记Lesson 46重点的单词词组: leak, tap, beer, truck, recycling, factory, unlike; take care of 保护, take showers淋浴， turn off the tap关闭水龙头，again and again 再三地；反复地，ride a/one's bike to... 骑自行车去……make a change 做出改动/改变， make a difference 有影响；起(重要)作用， in fact实际上
2. 识记重点句型。
1.We use them again and again，or we put other garbage in them.
2. I ride my bike to school every day.
3．Unlike other types of transportation，a bike doesn't make any pollution.
4．In fact，if each of us makes a small change in our life，we can make a big difference to our environment.
难点：学生能够明确如何保护环境。
【教学流程】
一、导学
导入：Do you know what kinds of pollution?
Air Pollution
Plastic pollution
Noise pollution
Light pollution
Water pollution
Soil pollution
二、独学
知识链接
Read words after the teacher.
Read the text after the tape.
基础感知
Task 1: Read the lesson and tick the points mentioned.
Task 2: Read the lesson and answer questions.
1. When you take a shower, what should you do?
2. How do we recycle at home?
3. Do you know what makes the most pollution?
4. How does Katie go to school every day? Why?
Task 3: Fill in the blanks.