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2.To understand the text .
Ability objectives:
1.To use reading skills : skimming and scanning .
2.To retell the text according to the mind map .
Emotion objective :
Students can be aware of the importance of protecting our environment and do something to save and protect the earth in our daily life .
Teaching Important Points:
1.Improve the students’ listening, speaking, reading and writing skills.
2.Matery the functions in this unit.
Teaching difficult points：
Encourage the students to do something to save and protect the earth and our environment.
Teaching material：ppt课件
Teaching methods：多媒体教学法，创设情境法，任务型阅读法，小组合作法，分层教学法
Teaching procedures：
Step1：warm-up:
1.出示三张环境污染图片， 问学生：What can you see in the picture?然后通过《地球之歌》引出Our environment is become worse and worse . So we need to protect it . But what can we do to protect our environment ? This is our project of this lesson 46 .
(设计思路：通过三张图片和一段视频，引出话题---保护环境 。)
2.出示图片并提问讨论：Talk about the following behaviors. What is he/she doing? Is it right? Is it good for environment? 学生描述回答后接着问： What should we do to protect our environment in our daily life?.学生各抒己见，回答自己的想法。
(设计思路：这一问题的出示及答语目的是在练习本单元的功能项目：Talking about cause, effect and purpose. 最后一句话的出示是为了导入新课。)
Step2:. Guessing game
Let student guess the phrases of this lesson .
( 设计目的：为接下来的学习任务打下基础 。)
Step3:listening
1.What do we waste the most?
A .Water B. Paper C. Electricity
2.What points mentioned in the lesson?
□take short showers
□recycle and sort
□reuse plastic bags
□ride bikes or take buses