1、Topic2 SectionA 学习导航学习导航 【学习目标】【学习目标】 1.1.知识目标：知识目标： 1).识记生词识记生词: sand, sandstorm,change into desert, human being,although,reduce,completely, 2)明 确 以 下 短 语 意 义 并能 熟 练 应 用明 确 以 下 短 语 意 义 并能 熟 练 应 用be harmful to, as a result ， do something ， stopprevent from doing, change into， blowaway， cut down 2.能力
2、目标：生能据本节所学习的内容表述沙尘暴的形成过程及如何保护环境能力目标：生能据本节所学习的内容表述沙尘暴的形成过程及如何保护环境. 3.情感态度价值观：教育学生保护环境爱护树木应从身边的小事做起。情感态度价值观：教育学生保护环境爱护树木应从身边的小事做起。 【学习重难点】【学习重难点】 1.从对话中提炼关于树木的三种功能的信息。从对话中提炼关于树木的三种功能的信息。 2.用所给的提示词描述沙尘暴的形成过程。用所给的提示词描述沙尘暴的形成过程。 【学习过程】【学习过程】 一：热身导入：观看杰克逊的一：热身导入：观看杰克逊的 MV“Earth song ”& 师生对话师生对话 1.What can
3、 trees do for us? 2.What will our world be like without trees? 二：自主学习二：自主学习&质疑质疑 1.Listen to 1a and choose the best answer. 2.Read 1a and complete treesfunctions. 3.Do you know how sandstorms come into being?Number the pictures 三：互动释疑三：互动释疑 Work in pairs and describe the pictures with the words give
4、n. 四：合作探究四：合作探究 Work in gorups and speak out. 1.Are1.Are treestrees importantimportant toto us?whyus?why (trees(trees functions)?functions)? 2.What2.What willwill ourour worldworld bebe likelike withoutwithout trees?trees? 3.What3.What cancan wewe dodo toto protectprotect thethe earth?earth? ( (Wesh
5、ouldWe shouldnt) 五：反馈训练五：反馈训练 Exercises: Fill in the blanks with the correct forms. be harmful to, as a result， stopprevent from doing, change into， do something ，blowaway， cut down,. 1. People have cut down such a large mumber of trees that the land_desert. 2.There are fewer trees left,so the wind
6、always_the earth_. 3.Air pollution has become a serious problem,so we must_to reduce it. 4.We should try our best to _people_cutting down trees. 5.In the future,human beings can protect the treeswell._,animals will live a happy life in the forest. 6. _trees is bad behavor(行为行为). 7. Reading in the sun_your eyes. 六六 内容小结：内容小结： We have learned:Phrases: The importance of trees(trees functions): We have known： 七家庭作业：以七家庭作业：以”Trees,our friends”为题写一篇书面表达（可以以为题写一篇书面表达（可以以“四四”为纲）为纲）
