1、Unit 13 Were trying to save the earth! The First Period SectionA1a1c 【Teaching aims】 一、 听、 说、 读、 写以下词汇及词组： litter, bottom, fisherman, coal, public, ugly, advantage, cost, wooden, plastic, the bottom of, make a difference 二、通过学习，口、笔头掌握下列句型： 1) The river used to be so clean. 2) People are throwing lit
2、ter into the river. 3) It has always been the nicest river in this town. 4) We should write to the government. 5) I think one problem is that the air is badly polluted. 三、1. 能听懂关于环境污染和环境保护的听力材料。 2. 能正确运用现在进行时态，used to 结构，现在完成时态， 被动语态和情态动词谈论 环境污染和环境保护。 四、通过谈论环境污染，学生能培养自己的环保意识。做到：保护环境，从我做起，从小事 做起。 Dif
3、ficulties：能正确运用现在进行时态，used to 结构，现在完成时态， 被动语态和情态动 词谈论环境污染和环境保护。 【Teaching steps】 Before listening Warm-up and revision（课堂热身和复习）（课堂热身和复习） 1.Have Ss watch the video and discuss: What is the video about? 2.Look at the pictures and answer the question: What are they about? How many kinds of pollution do
4、 these pictures show? 教学设计说明教学设计说明：创设情景，导入新课。 While listening Presentation（呈现新知识）（呈现新知识） 1.Group work. The air isnt clear There are more and more cars and factories We should There are all kinds of noises in our lives. People have more modern machines. We should 教学设计说明教学设计说明:练习本课重点短语句型，同时，对后面听力的进行预测
5、。降低听力难度。 2.听听 1b 录音一遍，回答下面的问题：录音一遍，回答下面的问题： What kind of pollution are Tony and Mark talking about? _ 3.Work on 1b. Listen and complete the sentences. What was the problem?The river was _. Even the bottom of the river was full of _. There were no more _ for fisherman to catch . What caused the probl
6、em? People are throwing _ into the river. Factories are putting _ into the river. How should the problem be solved? We should write to the _ and ask them to _ the factories. Everyone should help to _ the river. 4.模仿秀:跟读模仿，注意语音语调。 5.Pair work Work on 1c. 根据听力材料，练习下列对话根据听力材料，练习下列对话： 根据 1b 的表格提示，和同伴分角色
7、表演 Tony 和 Mark 的对话。结合 1a 的内容，再任选一 种污染表演对话。 Mark: The river was dirty. Even the bottom of the river was full of rubbish. Tony: But it used to be so clean! Mark: Yes, but people are throwing litter into the river. Tony: Everyone in this town should play a part in cleaning it up! 教学设计说明教学设计说明:进一步启发学生思维，再次对下一段听力进行预测。 【家庭作业】【家庭作业】 必做：把课堂上练习的关于环境污染的对话写下来。 选做：小组分工合作，用课前准备的照片，选取一种或几种污染做成海报， 教学设计说明教学设计说明:分层布置作业，促进不同层次学生的学习积极性。
