选修6unit4period1

1、清镇市卫城中学 高 二年级 英语 教学设计课题名称第 4单元 第 1 课时 Vocabulary 科目英语年级高二班级高二（2、5）教学时间 执教教师张燕课标要求课标要求学生在这个阶段能“在交际中逐步做到语音、语调自然、得体和流畅；根据语音辨别和书写不太熟悉的单词”这节课主要的任务就是训练学生能正确拼读出本单元的生词，并能根据读音拼写出单词，逐步训练他们建立起发音与拼写之间的联系，并帮助他们拓展词汇量学习者分析与教学环境分析学习者分析学生对词汇的掌握有了一定的基础。教学环境分析本单元词汇贴近学生生活实际，属于环境问题。教学目标1、知识与技能1.学生能够准确的读单词并能知道单词在上下文

2、的确切含义.2.学生能够拼写一些重要的单词.3.根据上下文,学生能够了解关键词的正确形式并学会使用这些关键词.2、过程与方法学生自己拼读单词的发音，利用构词法、反义词、近义词以及同形异义词限量拓展词汇量。学生小组内纠错，互相检查学案要求拓展的词汇。学生班内纠错，给出正确答案。3、情感态度与价值观让学生在自主合作轻松的状态下记忆学习单词教学重难点重点Pronunciation and spelling难点How to help students learn to use the new words in complete sentences教学资源磁带、多媒体教学环节教师活动学生活动教

3、学效果导入新课Step1Greetings.( Slide 1)Greet the Ss as usual.Step1 Greetings. 师生互动、探究新知Step 2 Pre-learning1. Scan the text below for these words and work out their meanings: environmentalist: line 1, people who are concerned with protecting the environment radiate: line 22,send out in all directions atmosp

4、heric concentration: line 35,the amount of such gases in the atmosphere release: line 33,allow to come out insignificant: line 43,too small or unimportant to consider or worry about consequence: line 44, something that happens as a result of a direct action or set of conditions Step 3 post-lear

5、ningSummaryAll scientists 1._ to the view that it is human activity that has caused the global warming. This activity is burning fossil fuels，to produce energy .As a result, a natural 2._called the “greenhouse effect” has 3._.Without this phenomenon，the earth would be about 4._cooler than it is. So,

6、 we need those gases. However, the global temperature will rise when we add huge 5._of extra carbon dioxide into the atmosphere. We know that the levels of carbon dioxide have 6._ greatly over the last 100 to 150 years. The attitude of scientists towards this rise Step2Pre- learningenvironmentalist:

7、 line 1, people who are concerned with protecting the environment radiate: line 22,send out in all directionsatmospheric concentration: line 35,the amount of such gases in the atmosphererelease: line 33,allow to come outinsignificant: line 43,too small or unimportant to consider or worry about conse

8、quence: line 44, something that happens as a result of a direct action or set of conditions.Step3 post-learningSummaryAll scientists 1._ to the view that it is human activity that has caused the global warming. This activity is burning fossil fuels，to produce energy .As a result, a natural 2._called the “greenhouse effect” has 3._.Without this phenomenon，the earth would be about 4._cooler than it is. So, we need those gases. However, the global temperature will rise